ELECTRONIC TIME RECORDER TO PLACE AN ORDER CALL: 866-487-475 OR VISIT: WWW.TIMECLOCKEXPERTS.COM 06-097-000 Rev. B 5640 Departure Drive Raleigh, NC 766
Service Manual CONTENTS. OUTLINE.... BLOCK DIAGRAM... - - 3. DISASSEMBLY AND REASSEMBLY OF BASIC PARTS... 3-. Exploded View... 3-. Tools Required... 3-3. Disassembly... 3-4. Reassembly... 4. DISASSEMBLY AND REASSEMBLY OF MECHANISM... 4-. Exploded View, Oiling Instruction Diagram... 4-. Tools, Oils and Detergent Required... 4-3. Disassembly... 4-4. Reassembly... 5. TROUBLESHOOTING... 5-. No Operation... 5-. No Display on the LCD Panel... 5-3. Setting Switch Malfunctioning... 5-4. Motor Operation Failure... 5-5. No Printing... 5-6. How to locate Problems from the Error Codes... 6. MEASUREMENT... 6-. Voltage Check... 6-. Motor Operation Check... 6-3. Print Head Resistance Measurement... 7. CONTROL CIRCUIT OPERATION... 7-. Control Circuit... 7-. Block Diagram of Circuits... 7-3. CPU... 7-4. Port List... 7-5. Operation Mode... 7-6. LCD... 7-7. Switch... 7-8. Sensor... 7-9. Encoder... 7-0. Motor... 7-. Print Head... 3-3- 3-3 3-3 3-7 4-4- 4-3 4-4 4-5- 5-5- 3 5-4 5-5 5-6 5-7 6-6- 6-6- 3 7-7- 7-7- 3 7-3 7-4 7-5 7-6 7-6 7-6 7-7 7-7 8. POWER SUPPLY CIRCUIT... 9. INSPECTION SHEET... 8-9- 0. ERROR CODE LIST... 0-. CONNECTOR PIN ASSIGNMENT... -. CIRCUIT DIAGRAM... - 3. PARTS LIST... 3-
. OUTLINE Be careful to avoid electric shock when repairing this unit. <Front view> <Cover off> Display Cover Key hole Display Ink Ribbon Ass'y Setting switch Key Top Print Head <Print position adjuster> The print position from the card edge is adjustable by pressing and sliding the print position button located on the bottom. <Back view> Wall-mount holes AC Adapter Ass'y 30mm JAN3A 5mm JAN 3AM:00 JAN 3AM:00 -
. BLOCK DIAGRAM Mechanism Q750-4000 Switch PCB Ass'y Q750-5007A Home position Motor Encoder sensor Print Head Paper Sensor Key Top 4 4 3 8 Connector Harness Ass'y Q7000-563A Sensor Harness B Unit Q750-565U Print Head Q7000-8000 CN5 CN3 CN4 CN Control PCB Ass'y Q750-500A CN 0 LCD Panel Q750-5505 CN6 AC Adapter Ass'y Q75-50A -
3. DISASSEMBLY AND REASSEMBLY OF BASIC PARTS CONTENTS 3-. Exploded View... 3-3-. Tools Required... 3-3 3-3. Disassembly... 3-3 3-4. Reassembly... 3-7 3-
3-. Exploded View Cover B P/N Q75-84 Lock Lever P/N Q75-084 Indicator Plate P/N Q75-00 Selection Label P/NQ75-04 Top Enclosure P/N Q75-00 AC Adapter Ass'y P/N Q75-50A k k Control PCB Ass'y P/N Q750-500A Mechanism Block i i Printer Cover P/N Q75-00 LCD Panel P/N Q750-5505 k h i h m h Paper Rack P/N Q75-070 Key Top P/N Q75-50 UL,CSA,FCC Label P/N Q006-8665- PL Label P/N Q0070-646 Rubber P/N Q750-065 Ref No. Bottom Enclosure P/N Q75-003 General-use parts Part No. k P.H.T. Screw (BT) 3x8 8400-306 3- m P.H. Screw M4x0, SPW 8400-409
3-. Tools Required Tools required :. No. or Phillips screwdriver. Miniature screwdriver 3-3. Disassembly Disassemble the parts in the following order : () Top Enclosure () Printer Cover (3) Control PCB Ass'y (4) LCD Panel (5) Mechanism Block () () () () () (3) () () (3) (4) () () (5) () Removing the Top Enclosure. Unlock the Lock Lever and remove the Top Enclosure. *If the Lock Lever cannot be used, the unit may be unlocked by using tweezer with rounded points to push the two holes on the rear of the Top Enclosure. Top Enclosure P/N Q75-00 Lock Lever P/N Q75-084 3-3
() Removing the Printer Cover. Remove the AC Adapter Ass'y cord.. Remove two screws k holding the Printer Cover. [Screw k : P.H.T. Screw (BT) 3x8 : pieces] k Printer Cover P/N Q75-00 AC Adapter Ass'y P/N Q75-50A. Lift the Printer Cover up and turn to the same direction as the illustration (about 90 ). 3. Remove harness from the connector of Control PCB Ass'y. p q Control PCB Ass'y P/N Q750-500A h Printer Cover P/N Q75-00 i n n Connector No. CN Numbers of Wire 0 Part No. Q750-5505 h CN 3 Q750-5007A i CN3 8 Q750-565U p CN4 Q7000-8000 q CN5 Q7000-563A 3-4
(3) Removing the Control PCB Ass'y. Remove two screws k holding the Control PCB Ass'y. [Screw k : P.H.T. Screw (BT) 3x8 : pieces]. Remove the Control PCB Ass'y from the Printer Cover hooks by rotating it. k Printer Cover P/N Q75-00 Control PCB Ass'y P/N Q750-500A Hook (4) Removing the LCD Panel. Remove a tape.. After releasing the two hooks holding the LCD Panel, push the LCD from the other side, and remove the LCD Panel. *Since the hooks that hold the LCD Panel break easily, please do not push any harder than necessary. LCD Panel P/N Q750-5505 Hook Printer Cover P/N Q75-00 Tape 3-5
(5) Removing the Mechanism Block. Insert the miniature screwdriver in the hole of the Bottom Enclosure back side, and release the two hooks holding the Paper Rack. Hook Paper Rack P/N Q75-070 Hole Bottom Enclosure P/N Q75-003. Lift the front edges of the Paper Rack, and pull it out. Paper Rack P/N Q75-070 3-6
3. Remove the Key Top. 4. Release harness connecting with Switch PCB Ass'y from the hook. 5. Open the hook and release fixing of Switch PCB Ass'y. Hook Switch PCB Ass'y P/N Q750-5007A Key Top P/N Q75-50 Hook 6. Remove two screws m holding the Mechanism Block. [Screw m : P.H. Screw M4x0, SPW : pieces] 7. Remove the Mechanism Block by rotating it in the same direction as the illustration. Mechanism Block m 3-4. Reassembly Reassembly of parts is performed by reversing the disassembly procedure. Note the following points : () Make sure that all connectors and screws are properly secured in place. () Take care to avoid catching or cutting the harnesses or cables when mounting parts. (3) Once reassembled, check all functions to ascertain that the reassembly procedure has been properly completed. 3-7
4. DISASSEMBLY AND REASSEMBLY OF MECHANISM CONTENTS 4-. Exploded View, Oiling Instruction Diagram... 4-4-. Tools, Oils and Detergent Required... 4-3 4-3. Disassembly... 4-4 4-4. Reassembly... 4-4-
4-. Exploded View, Oiling Instruction Diagram Mid Gear P/N Q000-37 Cam Gear P/N Q000-554- Motor Ass'y P/N Q750-04A i b c Base Plate Ass'y P/N Q750-040A c i Platen Gear P/N Q750-08 Bearing P/N Q000-035 Carrier Sub Plate P/N Q7000-466 d Bearing P/N Q000-035 c g Tractor Shaft Spring P/N 84950-586 Cam P/N Q000-576 Guide Shaft P/N Q750-05 Cam B P/N Q000-375 Lead Screw Shaft P/N Q7000-37 Carrier Spring P/N Q7000-66- r Carrier Ass'y P/N Q750-60A Head Holding Plate P/N Q7000-79 Clutch Gear P/N Q7000-548 Ink Ribbon Ass'y P/N Q704-30A f Shank of Cam B e Blade part of Cam and Cam B Sheet P/N Q750-84- Spacer P/N Q750-387 Platen Ass'y P/N Q750-060A Ribbon Driving Shaft P/N Q7000-674- Print Head P/N Q7000-8000 Ribbon Driving Wheel P/N Q7000-673 Sensor Lever P/N Q750-886 Reinforcing Plate P/N Q750-054 Paper Pressure Plate Ass'y P/N Q750-067A Reinforcing Plate P/N Q750-054 e Cam C P/N Q750-376 h Sensor Block P/N Q750-885 Platen Gear B P/N Q750-55 c Stopper A P/N Q750-34 Platen Plate P/N Q750-69 e Bottom Plate P/N Q750-694 Platen Plate Spring P/N Q750-630 f Cam Shaft P/N Q750-57 f h c Platen Cover P/N Q750-648 Ref No. General-use parts Part No. h i Switch PCB Ass'y Sensor Harness B Unit P/N Q750-5007A P/N Q750-565U Lubricant e YM-03 f SFP-3 g N-4K a b c d r Tielap TY-3M P.H. Screw M.6x5 P.H.T. Screw(BT) 3x6 P.H.T. Screw(BT) 3x6, PW P.H.T. Screw(BT) 3x8 84009-060 8400-64 8400-305 8400-350 8400-306 4-
4-. Tools, Oils, and Detergent Required Tools required :. No. or Phillips screwdriver. No. or Phillips screwdriver 3. Standard blade type screwdriver with a tip thickness of mm or less 4. Tweezers (for small parts) Oils required :. YM-03 (The blade part of Cam and Cam B, Cam C, Shaft of Platen Plate ). SFP-3 (Shaft of Cam B, Cam Shaft) 3. N-4K (Guide Shaft) Detergent required :. Alcohol (for cleaning the parts) *To clean the parts, moisten a soft cloth with alcohol and wipe. Do not dip the parts directly into alcohol. 4-3
4-3. Disassembly Disassemble the parts in the following order : () Ink Ribbon Ass'y () Head Holding Plate Print Head (3) Platen Cover (4) Platen Gear Cam Gear Mid Gear Base Plate Ass'y Spacer (5) Bearing Guide Shaft Carrier Ass'y Carrier Spring Carrier Sub Plate Ribbon Driving Wheel Clutch Gear Ribbon Driving Shaft (6) Lead Screw Shaft Cam Cam B Tractor Shaft Spring Bearing (7) Sensor Harness B Unit (8) Motor Ass'y (9) Sheet (0) Platen Ass'y Cam Shaft Platen Gear B Cam C Platen Plate Platen Plate Spring () Sensor Block Sensor Lever Switch PCB Ass'y () Stopper A Reinforcing Plate Paper Pressure Plate Ass'y Bottom Plate () () () () (3) () (3) (4) () () (3) (4) (5) () (3) (4) (5) (6) () (3) (4) (7) () (3) (4) (7) (8) () (3) (4) (9) () (3) (0) () (3) (0) () () (3) (4) (9) (0) () 4-4
() Removing the Ink Ribbon Ass'y. Hold the handle of the Ink Ribbon Ass'y and remove it by pulling sideways. Ink Ribbon Ass'y P/N Q704-30A Handle () Removing the Head Holding Plate and Print Head. Put the Head Holding Plate in the direction of arrow A with a screwdriver or tweezers and remove it.. Pull up the Print Head and remove it in the horizontal direction as shown by arrow B. Head Holding Plate P/N Q7000-79 A B Print Head P/N Q7000-8000 4-5
(3) Removing the Platen Cover. Remove two screws c holding the Platen Cover and move the Sensor Block in the direction shown by arrow A so as to slide the Platen Cover in the direction shown by arrow B for removal. [Screw c : P.H.T. Screw (BT) 3x6 : pieces] *Carry out the procedure with the Platen Ass'y pressed downward. (Rotate the Cam Shaft to press down the Platen Ass'y. As the Platen Ass'y moves just underneath, it will emit a click sound.) A B Platen Cover P/N Q750-648 c (4) Removing the Platen Gear, Cam Gear, Mid Gear, Base Plate Ass'y, and Spacer.. Remove the Platen Gear, Cam Gear, Mid Gear.. Remove two screws c holding the Base Plate Ass'y. [Screw c : P.H.T. Screw (BT) 3x6 : pieces] 3. Remove the Spacer. Cam Gear P/N Q000-554- Mid Gear P/N Q000-37 Platen Gear P/N Q750-08 Base Plate Ass'y P/N Q750-040A Spacer P/N Q750-387 c 4-6
(5) Removing the Bearing (this side), Guide Shaft, Carrier Ass'y, Carrier Spring, Carrier Sub Plate, Ribbon Driving Wheel, Clutch Gear, and Ribbon Driving Shaft.. Remove one screw c holding the Bearing (this side). [Screw c : P.H.T. Screw (BT) 3x6 : piece]. Remove the Guide Shaft from the Base Plate Ass'y. 3. Remove the Carrier Ass'y from the Base Plate Ass'y. 4. Remove the Carrier Spring from the Carrier Ass'y. 5. Remove one screw d holding the Carrier Sub Plate. [Screw d : P.H.T. Screw (BT) 3x6, PW : piece] 6. Remove the Ribbon Driving Wheel, Clutch Gear, and Ribbon Driving Shaft. Base Plate Ass'y P/N Q750-040A Carrier Sub Plate P/N Q7000-466 Bearing P/N Q000-035 d Carrier Spring P/N Q7000-66- c Guide Shaft P/N Q750-05 Carrier Ass'y P/N Q750-60A Clutch Gear P/N Q7000-548 Ribbon Driving Shaft P/N Q7000-674- Ribbon Driving Wheel P/N Q7000-673 4-7
(6) Removing the Lead Screw Shaft, Cam, Cam B, Tractor Shaft Spring, and Bearing. Pull out the Lead Screw Shaft from the Cam B. Remove the Cam, Cam B, and Tractor Shaft Spring. 3. Remove one screw c holding the Bearing. [Screw c : P.H.T. Screw (BT) 3x6 : piece] c Base Plate Ass'y P/N Q750-040A Bearing P/N Q000-035 Cam P/N Q000-576 Lead Screw Shaft P/N Q7000-37 Cam B P/N Q000-375 Tractor Shaft Spring P/N 84950-586 (7) Removing the Sensor Harness B Unit. Remove one screw c and one screw r holding the Sensor Harness B Unit [Screw c : P.H.T. Screw (BT) 3x6 : piece] [Screw r : P.H.T. Screw (BT) 3x8 : piece] c Sensor Harness B Unit P/N Q750-565U Base Plate Ass'y P/N Q750-040A 4-8 r
(8) Removing the Motor Ass'y. Remove two screws b holding the Motor Ass'y. [Screw b : P.H. Screw M.6x5 : pieces] b Motor Ass'y P/N Q750-04A Base Plate Ass'y P/N Q750-040A (9) Removing the Sheet. Remove the Sheet. Sheet P/N Q750-84- 4-9
(0) Removing the Platen Ass'y, Cam Shaft, Platen Gear B, Cam C, Platen Plate, and Platen Plate Spring. Remove the Platen Ass'y by releasing the hook of the Platen Plate. *Do not peel off the tapes adhering the Platen Ass'y.. Pull out the Cam Shaft by pressing down the Platen Plate, and remove the Platen Gear B. 3. Remove the Cam C, Platen Plate, and Platen Plate Spring. Platen Ass'y P/N Q750-060A Cam C P/N Q750-376 Platen Plate P/N Q750-69 Platen Plate Spring P/N Q750-630 Platen Gear B P/N Q750-55 Cam Shaft P/N Q750-57 Platen Cover P/N Q750-648 4-0
() Removing the Sensor Block, Sensor Lever, and Switch PCB Ass'y. Move the Sensor Block in the direction shown by arrow A and remove it from the Platen Cover while pulling it upward.. Remove the Sensor Lever with tweezers 3. Release the hook part of the Sensor Block and remove the Switch PCB Ass'y. Sensor Block P/N Q750-885 Sensor Lever P/N Q750-886 Platen Cover P/N Q750-648 Switch PCB Ass'y P/N Q750-5007A A () Removing the Stopper A, Reinforcing Plate, Paper Pressure Plate Ass'y, and Bottom Plate. Remove the Stopper A with tweezers.. Do not disassemble the Reinforcing Plate, Paper Pressure Plate Ass'y and Bottom Plate unless its removal is necessary. *Do not peel off the tapes adhering the Paper Pressure Plate Ass'y. Paper Pressure Plate Ass'y P/N Q750-067A Reinforcing Plate P/N Q750-054 Reinforcing Plate P/N Q750-054 Stopper A P/N Q750-34 Bottom Plate P/N Q750-694 4-
4-4. Reassembly Reassembly of parts is performed by reversing the disassembly procedure. Note the following points : () Properly lubricate all parts that require lubrication. () Bundle harnesses firmly and accurately enough to avoid interference with gears (3) Lastly install the Platen Gear B as follows (See the drawing): Match the Cam Gear and the hole of the Base Plate Ass'y. Place the hole of the Platen Gear B facing straight upward. As it comes into the upright position, it will emit a clicking sound. At this time, the Platen Ass'y is at the lowered position. (4) Check the following sliding parts :. Gears. Cam and Cam B 3. Carrier Ass'y 4. Platen Cover and Sensor Block 5. Sensor Block and Sensor Lever 6. Platen Block Hole (5) Check clearances in the following parts :. Cam and Cam B (right and left). Carrier Ass'y (rack engagement) 3. Platen Plate (6) Check for backlash between gears. (7) Attach spring parts firmly at their right places to ensure the spring works properly. *Attach the Carrier Spring so that their faces contact the Guide Shaft. (8) Attach two sensors of the Sensor Harness B Unit firmly at their right places *The one with a longer harness is the home position sensor, while the one with a shorter harness is the encoder sensor. (9) When attaching hook-shaped parts, be sure that the hook parts are firmly attached. (0) Direct the Cam C in the proper direction when installing it. () When installing the FPC of the Print Head on the Base Plate Ass'y, check to see if the installation length of the FPC is appropriate or not by moving the Carrier laterally. () When assembling the harness of Switch PCB Ass'y to the Platen Cover, be sure that the Sensor Block operates to the proper range. 4-
5. TROUBLESHOOTING CONTENTS 5-. No Operation... 5-5-. No Display on the LCD Panel... 5-3 5-3. Setting Switch Malfunctioning... 5-4 5-4. Motor Operation Failure... 5-5 5-5. No Printing... 5-6 5-6. How to locate Problems from the Error Codes... 5-7 5-
5-. No Operation No operation Digits are not displayed on the LCD. Unable to print. Check the AC Adapter Ass'y output voltage level. (See "Voltage Check.") Normal? No AC Adapter Ass'y failure. Yes Turn the power off and detach the outer jacket. Is fuse F blown? No Check the 5V and 0V voltage levels. (See "Voltage Check.") Yes Determine the cause of the blown fuse. Foreign matter (metal, etc.) Caught or exposed wires Short circuit caused by inadequate soldering No Normal? Change the fuse. For safty reasons, replace only with the same type and rating of Fuse. Yes Regulator IC P3 failure Short circuit Over load No Is the 0V level being output? Yes Regulator IC P4 failure Short circuit Over load No Is the 5V level being output? Yes Control circuit failure. 5-
5-. No Display on the LCD Panel Nothing is displayed on the LCD Panel. Nothing appears on the screen. There is only a partial display on the screen, or the screen flickers. Perform the function test to check the LCD Panel. See "Inspection Sheet" Note: Pressing the reset switch causes the settings, including the time and calendar settings, to be initialized. How is the display? Nothing is displayed. Is connector CN connected? No Secure the connector. Partial display or the screen is flickering. Yes Inadequate CPU soldering Inadequate LCD heat seal See ". No Operation." 5-3
5-3. Setting Switch Malfunctioning Unable to input with the setting switches. Perform the function test to check key switches. See "Inspection Sheet" Note: Pressing the reset switch causes the settings, including the time and calendar settings, to be initialized. Normal? No Key switch failure Inadequate soldering on CPU Yes There are no anomalies in the setting switch. 5-4
5-4. Motor Operation Failure Motor does not run. Motor does not run at all. Motor runs abnormally. Plug the AC Adapter Ass'y into the outlet. Press the reset switch. Note: Pressing the reset switch causes the settings, including the time and calendar settings, to be initialized. Carrier cycles once? No Turn the power off and detach the outer jacket. Yes Turn the power off and detach the outer jacket. Secure the connector. No Is connector CN5 connected? Yes Is connector CN connected? No Secure the connector. Check the 0V voltage levels. (See "Voltage Check.") Yes Insert the time card for punching. Regulator IC P3 failure Short circuit Over load No Normal? Yes Check the Motor operation. (See "Motor Operation Check.") Motor failure. No Normal? Yes Motor driver IC P failure Inadequate soldering on the CPU Does the Motor operate? Motor does not run. Card detection switch failure Inadequate harness soldering on the Switch PCB Ass'y or Card detection switch Inadequate soldering on the CPU An error message appears. See "6. How to locate Problems from the Error Codes." 5-5
5-5. No Printing Unable to print Motor runs. If the motor does not run, see "4 Motor Operation Failure." Card does not print. Abnormal printout (chipped dots, etc.) Is the Ink Ribbon Ass'y set properly? No Set the Ink Ribbon Ass'y properly. Yes Turn the power off and detach the outer jacket. Is connector CN4 connected? No Secure the connector. Yes Measure the Print Head resistance. (See "Print Head Resistance Measurement.") Normal? No Print Head failure Yes Print Head driver Q - 0 failure Inadequate soldering on the CPU Note: If the Print Head resistance is less than the prescribed value, the Print Head driver is probably defective. You will also need to change the corresponding drivers (Q - 0). 5-6
5-6. How to locate Problems from the Error Codes E-0 Built-in memory is not retained during power failure. Anomaly of built-in memory data Press reset switch, disconnect the power for to 3 minutes, and then turn on the power. Note: Pressing the reset switch causes the settings, including the time and calendar settings, to be initialized. Is "E-0" displayed? No Causes: CPU out of control due to AC line noise or static electricity. Yes Causes: ) Lithium Battery voltage drop ) Inadequate solder jumper on the JP 3) Power failure detection circuit failure Note: When Lithium Battery voltage is V or less, replace battery. (Battery life is 5 years in accumulated power failure time.) When replacing Lithium Battery, make sure solder jumper is done for the JP and press the reset switch. E-30 Print Head fails to return to its home position. Is there any anomaly in the CR-system Mechanism? No Causes: ) Home position sensor failure ) Home position sensor circuit failure 3) CR-system Mechanism failure Yes Eliminate causes. 5-7
E-38 There are anomalies in the CR motor or the CR encoder. Insert the time card. Does the CR motor run? No See "4. Motor Operation Failure." Yes Does the Carrier Ass'y move smoothly? No Eliminate causes. Are there any anomalies in the CR-system Mechanism, such as Cam, Carrier or Ink Ribbon Ass'y? Yes Causes: ) CR encoder failure ) CR encoder circuit failure 5-8
6. MEASUREMENT CONTENTS 6-. Voltage Check... 6-6-. Motor Operation Check... 6-6-3. Print Head Resistance Measurement... 6-3 6-
6-. Voltage Check AC Adapter Ass'y Measure the voltage at the AC Adapter Ass'y plug. Measuring point Target voltage Measuring conditions Outside metal Inside metal 7.6VAC ± 5% AC Adapter Ass'y plugged in. Control PCB Ass'y Use test pin land TP, 3, and 5 to measure voltage. Measuring point Target voltage Measuring conditions 0V (TP) GND (TP5) 0.85VDC ± 6% AC Adapter Ass'y plugged in. 5V (TP3) GND (TP5) 5VDC ± 5% AC Adapter Ass'y plugged in. 6-. Motor Operation Check Apply voltage as follows to the harness inserted to the connector CN5 and check whether the Motor runs properly. Motor CR motor Movement Print Head is fore-and-aft and Platen Ass'y is up-and-down. Voltage applied Pin (red) Pin (green) GND 9VDC 6-
6-3. Print Head Resistance Measurement Measure the Print Head resistance at the terminals with the FPC harness inserted to the CN4. Measuring point 3 4 5 6 7 9 0 8 8 8 8 8 8 8 8 8 8 8 Target resistance Open.35 ± 0..35 ± 0..35 ± 0..35 ± 0..35 ± 0. Short.35 ± 0..35 ± 0..35 ± 0..35 ± 0. Note: If the Print Head resistance is smaller than the value shown on the left, there is a possibility that the Print Head pin driver is broken. In that case, replace Print Head and check drivers Q - 0. 8, 7 6-3
7. CONTROL CIRCUIT OPERATION CONTENTS 7-. Control Circuit... 7-7-. Block Diagram of Circuits... 7-7- 3. CPU... 7-3 7-4. Port List... 7-3 7-5. Operation Mode... 7-4 7-6. LCD... 7-5 7-7. Switch... 7-6 7-8. Sensor... 7-6 7-9. Encoder... 7-6 7-0. Motor... 7-7 7-. Print Head... 7-7 7-
7-. Control Circuit The control circuit consists of the following: Control PCB Ass'y CPU LCD Setting switch Reset switch Sensor circuit Encoder circuit CR motor driver circuit Print Head pin driver circuit Power failure detector circuit 7-. Block Diagram of Circuits LCD COM0-3 4 S0-5 6 CR motor driver circuit Print Head pin driver circuit CR encoder/ Home position sensor circuit P30,3 P0 P80-83 P90-93 9 P0, P53 CPU P60,6 3 RESET P00 Setting switch Reset switch Power failure detection circuit Paper Sensor/ Key Top circuit P0,0 7-
7-3. CPU 4-bit single-chip microcomputer µpd75308gc(nec product) Equipped with 8,9 x 8 bit ROM and 5 x 4bit RAM Main system clock is a 4.9 MHz ceramic oscillator. Subsystem clock is a 3.768 khz crystal oscillator. Equipped with LCD controller/driver. 7-4. Port List Name No. of Pins I/O Function P00/INT4 P0/SCK P0/SO/SB0 P03/SI/SB P0/INT0 P/INT P/INT/TI/TI P3/TI0 P0/PT00 P/PT0 P/PCL/PT0 P3/BUZ P30/LCDCL P3/SYNC P3 P33 P50 P5 P5 P53 P60/KR0 P6/KR P6/KR P63/KR3 S3/P80 S/P8 S/P8 S0/P83 S9/P90 S8/P9 S7/P9 S6/P93 5 6 7 8 9 30 3 3 33 34 35 36 5 6 7 8 0 3 4 5 6 7 37 38 39 40 4 4 43 44 I I I I I I I I O O O O O O O O O O O O I I I I O O O O O O O O PWF PS PB - ENC - SH - PIN9 - - BUZ CR0 CR - - - - - ESN SEL CHG SET - PIN8 PIN7 PIN6 PIN5 PIN4 PIN3 PIN PIN Power failure detection Paper Sensor Key Top Unused CR encoder Unused Home position sensor Unused Pin9 Unused Unused Clock trimming CR motor control 0 CR motor control Unused Unused Unused Unused Unused Sensor enable SELECT switch CHANGE switch SET switch Unused Pin8 Pin7 Pin6 Pin5 Pin4 Pin3 Pin Pin 7-3
7-5. Operation Mode Operation mode and functions are as follows: Operation state AC power CPU state (clock) PWF (P00) A Normal operation All functions operation ON Operation mode (4.9 MHz) H B Power failure operation Time update Memory retention only OFF Halt mode (3.768 khz) L When a power failure causes the output voltage of the 0V-regulator IC to drop below about 7V, PWF(P00) is set to "L." This allows the unit to enter into Mode B. 7-4
7-6. LCD LCD specifications Operating voltage 5V Lighting method Reflective type Viewing direction 6:00 Operating method /4 duty, /3 bias,8 Hz T T T3 T4 T5 T6 T7 T8 M A M 3 4 M3 5 F 6 B G E C M4 D S S S3 S4 S5 T9 T0 T Pin table Pin No. 3 4 5 6 7 8 9 0 3 4 5 6 7 8 9 0 COM T7 M AM D PM D S 3D S 4D S3 S4 5D S5 6D T COM - - - COM T6 T E C E C 3E 3C 4E 4C M4 5E 5C 6E 6C T0 - COM - - COM3 T5 T F G F G 3F 3G 4F 4G M3 5F 5G 6F 6G T9 - - C0M3 - COM4 T4 T3 A B A B 3A 3B 4A 4B M 5A 5B 6A 6B T8 - - - COM4 SEG SEG SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG0 SEG SEG SEG3 SEG4 SEG5 SEG6 - - - - S F E SEGn A G D SEGn+ B C COM3 COM COM4 COM 7-5
7-7. Switch The switch state is input the port below. Switch state: L... ON, H... OFF PS(P0): Paper Sensor Detects presence of a card. Normally "off". When a card is put in, it pushed a sensor lever, it turn a sensor to "on". PB(P0): Key Top For manual printing. Normally "off". When the Key Top is pressed, it turn a switch to "on". SEL(P60/KR0): SELECT switch Setting switch. Normally "off". When a switch is pressed, it turn a switch to "on". CHG(P6/KR): CHANGE switch Setting switch. Normally "off". When a switch is pressed, it turn a switch to "on". SET(P6/KR): SET switch Setting switch. Normally "off". When a switch is pressed, it turn a switch to "on". 7-8. Sensor Set ESN(P53) to "L" to allow the sensor infrared LED to glow and make the sensor state readable. Sensor state: L... light-passing, H... shading. SH(P/INT) : Home position sensor Detects the home position of the Print Head. 7-9. Encoder Set ESN(P53) to "L" to allow the sensor infrared LED to glow and make the encoder state readable. Encoder state: L... light-passing, H... shading. ENC(P0/INT0) : CR encoder Detects the revolution of CR motor. 7-6
7-0. Motor The CR motor CCW to cause the Cam to rotate, allowing the Print Head to move. The motor operation mode is controlled by CR0 (P30) and CR (P3). Operation mode Stand-by CW CCW Brake CR0 L H L H CR L L H H 7-. Print Head A pin will impact when PIN-9 (P0, P80-83, P90-93) is set to "H". The record is printed when the Print Head is moving to the front. Driving voltage: 9.5V±0% Print Head pin impact time: 380µs, 400µs, 40µs (Variable) Printing method Ribbon life Character dot composition Print Head life Impact serial dot matrix Violet, over 0.5 million characters or year: provided the ribbon is used at normal temperature and humidity within year from the date of manufacture. 9 dots (H) x 7 dots (W) Over.8 million characters 7-7
8. POWER SUPPLY CIRCUIT (on Control PCB Ass'y). 4-9Vac is provided from AC Adapter Ass'y to the connector CN6.. 4-9Vac is provided to DB after removing noise due to FB and FB. And being rectified by DB and smoothed by C6 and C7 and is provided to regulator P3 that regulates into 0Vdc. 3. 0Vdc drives the pins and the motor. 4. And 0Vdc is regulated to 5Vdc by regulator P4. 5Vdc is supplied to the control circuit. 8-
9. INSPECTION SHEET Inspection Item Turn On LCD Check Printing Check Inspection Method Insert the AC Adapter Ass'y to the AC power outlet. Press the reset switch. Press the SELECT and reset switch simultaneously. Press the SET switch. Press the SET switch. Each pressing of the SET switch causes the LC to glow in this following order. PASSWORD none D.S.T.END D.S.T.START PRINT DIRECTION none none LANGUAGE COMMENT LEADING ZERO HOUR MIN. YEAR DIGIT PRINT ORDER HOUR DATE TIME ' AM PM : Repeated pressing of the SET switch causes the display to change as follows. 00 0000... 88 8888 99 9999 Press the SET switch. Set the knob on the bottom to the center and print out three times. Press the SET and reset switch simultaneously. Print out three times. Press the reset switch. Inspection Standard Make sure initial operation was made and the display indicates the time at :00 a.m. Display shows " 7 0-**". Make sure readouts other than ** are identical. Make sure the entire LCD is lit up. Make sure the entire LCD is put out. " "(6 pieces), " ' ","AM","PM"," : ", " " are lit up in sequence. Make sure initial operation. Make sure the printed output is as follows. Example) JAN AM:00 Make sure initial operation, and display shows " 00 0000". Make sure twenty "E" characters are printed out. Make sure initial operation was made and the display indicates the time at :00 a.m. 9-
Inspection Item CHANGE Switch Check Manual Print Check Lithium Battery Check Completion of Check Inspection Method Press the SELECT switch and move position TIME. Press the CHANGE switch when 6:00 is shown. Press the SET switch twice. Press the SELECT switch and move position PRINT DIRECTION/PRINT ACTIVATION. Pressing the SET switch makes CC (Print Activation) flicker. Press the CHANGE switch when "3:Manual" is shown. Press the SET switch twice. Pull the knob on the bottom toward yourself and insert the card. Press the Key Top and print out three times. Check the time. Pull out the AC Adapter Ass'y. Make sure entire LCD is put out. Leave one minutes. Insert the AC Adapter Ass'y to the AC power outlet. Press the reset switch. Pull out the AC Adapter Ass'y. Inspection Standard Make sure a readout on seconds advances. ** 6:00 - ** gives a readout on seconds. Make sure the time displays and ":" flickers. No printed output is produced when the card is inserted. Make sure the printed output is as follows. Example) JAN AM 6:00 Make sure the starting point of printed output is within mm from the edge of a card. Make sure the time display did not return to "AM:00". 9-
0. ERROR CODE LIST No Error Symptoms Remedies E-00 E-0 E-05 E-30 E-38 E-40 E-4 E-49 CPU does not function properly. Program is corrupted or CPU is broken. Memory retention is not possible. No-card detection occurs before printing in the automatic or semi-automatic printing modes. Print Head does not return to the home position. Home position sensor is not shaded after the Print Head home position initial operation or after printing of the card. There is an anomaly in the CR motor or CR encoder sensor. Encoder does not pulse within sec. after the CR motor begins to operate or within 5.3 msec. during operation. Wrong password is entered. Daylight saving time setting is incorrect. An impractical setting is made.. Press the reset switch and check the CPU for proper operation.. Make sure the Lithium Battery is properly installed.. Make sure JP of the Control PCB Ass'y is properly installed. 3. Make sure the voltage of the Lithium Battery is not lowered.. Press the card on the Paper Sensor until time is printed.. Make sure the home position sensor is installed in the proper position.. Check the CR encoder sensor for proper function. 3. Make sure gears in the CR motor system are properly engaged and the Print Head properly moves.. Check the CR encoder sensor for proper operation.. Make sure the CR motor can run. 3. Make sure the CR motor system gears meshed. 4. Check the CR encoder sensor for proper placement.. Enter the correct password that has been input in the password setting.. Change the setting being care not to input the same month and day for when daylight saving time starts and ends.. Make the setting within the practical range. 0-
. CONNECTOR PIN ASSIGNMENT Control PCB Ass'y () CN (LCD Panel (Q750-5505)) Pin No. 3 4 5 6 7 8 9 0 Signal Name Function Pin No. Signal Name Function COM 4 COM 3 COM COM SEG6 SEG5 SEG4 SEG3 SEG SEG COMMON4 COMMON3 COMMON COMMON SEGMENT6 SEGMENT5 SEGMENT4 SEGMENT3 SEGMENT SEGMENT 3 4 5 6 7 8 9 0 SEG0 SEG9 SEG8 SEG7 SEG6 SEG5 SEG4 SEG3 SEG SEG SEGMENT0 SEGMENT9 SEGMENT8 SEGMENT7 SEGMENT6 SEGMENT5 SEGMENT4 SEGMENT3 SEGMENT SEGMENT () CN (Switch PCB Ass'y (Q750-5007A)) Pin No. 3 Signal Name PB GND PS Function Key Top Paper Sensor (3) CN3 (Sensor Harness B Unit (Q750-565U)) Pin No. 3 4 5 6 7 8 Signal Name SHC SHE SHA SHK ENC ENE ENA ENK Function Home position sensor collector (SH) Home position sensor emitter Home position sensor anode Home position sensor cathode CR encoder collector (ENC) CR encoder emitter CR encoder anode CR encoder cathode -
(4) CN4 (Print Head (Q7000-8000)) Pin No. 3 4 5 6 7 8 9 0 Signal Name FG PIN6 PIN4 PIN8 PIN PIN9 COM COM PIN7 PIN PIN5 PIN3 Function Connection to head frame 6 th pin from top (PIN6) 4 th pin from top (PIN4) 8 th pin from top (PIN8) nd pin from top (PIN) Bottom pin (PIN9) Common (0V) Common (0V) 7 th pin from top (PIN7) Top pin (PIN) 5 th pin from top (PIN5) (5) CN5 (Connector Harness Ass'y (Q7000-563A)) Pin No. Signal Name CRA CRB Function CR motor (+) CR motor (-) (6) CN6 (AC Adapter Ass'y (Q75-50A)) Pin No. 3 Signal Name AC AC - Function -
. CIRCUIT DIAGRAM Control PCB Circuit Diagram (/3) -
Control PCB Circuit Diagram (/3) -
Control PCB Circuit Diagram (3/3) BL0RN-R6 (murata) BL0RN-R6 (murata) -3
Switch PCB Circuit Diagram -4
3. PARTS LIST CONTENTS 3-. Overall Exploded View... 3-3-. Mechanism... 3-3 3-3. Control PCB Ass'y... 3-4 3-4. Packing Material... 3-5 3-5. Lubricant... 3-5 Note : The ordering unit of part with the mark "" is 0 pieces or sets. (e.g. 0,0,30,---) Note : ( ) in 3' TY PER UNIT : Not available. Note 3 : Service parts are shipped without lubrications even where it is required. Refer to the exploded view to confirm lubrications and apply lubrication when necessary before replacing service parts. 3-
PARTS LIST. Overall Exploded View REF.NO. DESCRIPTION MANUFACTURER PART NUMBER Q' TY PER UNIT MODEL Control PCB Ass'y Q750-500A Mechanism Q750-4000 h Switch PCB Ass'y Q750-5007A i Sensor Harness B Unit Q750-565U LCD Panel Q750-5505 AC Adapter Ass'y Q75-50A Top Enclosure Q75-00 Cover B Q75-84 Indicator Plate Q75-00 Printer Cover Q75-00 Selection Label Q75-04 PL Label Q0070-646 UL, CSA, FCC, Label Q006-8665- Bottom Enclosure Q75-003 Rubber Q750-065 Key Top Q75-50 Paper Rack Q75-070 k P.H.T. Screw (BT) 3x8 8400-306 4 m P.H. Screw M4x0, SPW 8400-409 3-
PARTS LIST. Mechanism REF.NO. DESCRIPTION MANUFACTURER PART NUMBER Q' TY PER UNIT () () () () () () () 4 7 MODEL a b c d r Base Plate Ass'y Base Plate Reduction Shaft Motor Ass'y Motor Connector Harness Ass'y Motor Pinion Carrier Ass'y Carrier Carrier Roller Carrier Spring Cam Cam B Lead Screw Shaft Tractor Shaft Spring Ribbon Driving Wheel Clutch Gear Ribbon Driving Shaft Carrier Sub Plate Head Holding Plate Bearing Guide Shaft Mid Gear Cam Gear Platen Gear Platen Gear B Cam Shaft Cam C Platen Ass'y Platen Plate Platen Plate Spring Platen Cover Sensor Block Sensor Lever Sheet Spacer Stopper A Reinforcing Plate Paper Pressure Plate Ass'y Bottom Plate Tielap TY-3M P.H. Screw M.6x5 P.H.T. Screw (BT) 3x6 P.H.T. Screw (BT) 3x6, PW P.H.T. Screw (BT) 3x8 Print Head Q750-040A Q750-040 Q750-00 Q750-04A Q000-04 Q7000-563A Q000-080 Q750-60A Q7000-60- Q750-9 Q7000-66- Q000-576 Q000-375 Q7000-37 84950-586 Q7000-673 Q7000-548 Q7000-674- Q7000-466 Q7000-79 Q000-035 Q750-05 Q000-37 Q000-554- Q750-08 Q750-55 Q750-57 Q750-376 Q750-060A Q750-69 Q750-630 Q750-648 Q750-885 Q750-886 Q750-84- Q750-387 Q750-34 Q750-054 Q750-067A Q750-694 84009-060 8400-64 8400-305 8400-350 8400-306 Q7000-8000 3-3
3.Control PCB Ass'y PARTS LIST REF.NO. BATT C-5, 8-0, 4,8, C7 C, C3 C5,9,3 C6,7 C0 CN CN CN3 CN4 CN5 CN6 D D D3 D4 DB F FB, P P P3 P3 P3 P4 Q, Q-0 Q R-6, -5,33,34 R7,8,,3 R9,3,35 R0 R6 R7-5 R6 R9 R30 R36 SW-4 VC X X ZD ZD,3 ZNR DESCRIPTION Lithum Battery CR450TVB Chip Ceramic Cap. 0.uF/50V Chip Ceramic Cap. 47pF/50V Chip Ceramic Cap. 00pF/50V Al.Elec.Cap. 6800uF/6V Chip Al.Cap. 47uF/6V Al.Elec.Cap. 3300uF/35V Chip Al.Cap. 0.33uF/50V Connector HLW0S-6C7 Connector 7398-3 Connector 7398-8 Connector HLEMS- Connector BB-EH(WHITE) Jack HEC305-0-50 Chip Diode DF60 Chip Diode SS355TE-7 Schottky Diode SS40-TE85L Schottky Diode RB706F-40T06 Diode Bridge SVB60 Fuse 47003 3A 5V Ferrite Beads BL0RN-R6 Mask CPU IC BA690FP-Y Linear IC PQ30RV Heat Sink A PUE6-30 P.H. Screw M3x8, SW Linear IC TA78M05F(TE6L) Transistor DTA43EUA-T06 Transistor SD70-T00 Transistor SC408-T06 Chip Res. /0W +/-5% 5Kohm Chip Res. /0W +/-5% 00Kohm Chip Res. /0W +/-5% Kohm Chip Res. /0W +/-5% 560Kohm Chip Res. /4W +/-5% 00ohm Chip Res. /0W +/-5%.Kohm Chip Res. /4W +/-5% 4Kohm Chip Res. /0W +/-% 3.3Kohm Chip Res. /0W +/-% 430ohm Metal Oxide Res. W +/-5% 4.7ohm Switch SKHHLRA00 Variable Cap. TZC03P00A30T00 Ceramic Oscillator CSTCC4.9MG 4.9MHz Quartz Crystal DS-VT-00 3.768KHz (CL=.5pF) Chip Zenner Diode UDZTE-7B Chip Zenner Diode UDZTE-76.B Surge Absorber MNR33ZR07D MANUFACTURER PART NUMBER 84093-4 84094-750 84094-7007 84094-7050 84093-90 84094-4003 84093-687 84094-40 84093-76 8409-750 8409-754 84093-705 8409-700 84093-060 8409-47 8409-478 8409-33 8409-37 8409-8409-833 84093-047 Q750-5540 84094-385 8409-407 94553-543 8400-3009 8409-4050 84090-796 84090-793 84090-79 84094-600 84094-60 84094-607 84094-638 84094-5004 84094-6080 84094-500 84094-684 84094-663 84090-4987 8409-460 84090-904 8409-305 8409-30 8409-63 8409-6 8409-75 3-4 Q' TY PER UNIT 4 9 4 3 9 4 MODEL
PARTS LIST 4.Packing Material REF.NO. DESCRIPTION MANUFACTURER PART NUMBER Q' TY PER UNIT MODEL Packing Box Q75-60 Pad A Q75-605 Pad B Q75-606 Manual Q75-60 Ribbon Caution Sheet Q7000-654- Wall Folding Sheet Q7000-63- Oval Head Screw 3.5x5 8400-337 Lock Lever Q75-084 Subsidiary Pad Q750-653 AC Adapter Pad Q750-6530 Paper Rack Pad Q750-6534 Polyethylene Bag 350x450 84008-35 Polyethylene Bag 0.x350x450 84008-36 Polyethylene Bag 0x30 84008-63 Polypropylene Bag 76x7 84008-47 e YM-03 L95300-800 50g f SFP-3 LQ750-800 30cc g N-4K LQ750-800 30cc TO PLACE AN ORDER CALL: 866-487-475 OR VISIT: WWW.TIMECLOCKEXPERTS.COM 3-5
5640 Departure Drive Raleigh, NC 766 www. acroprint. com (800) 334-790