TROUBLE : I: EXCESSIVE DRAIN OF PROTECTIVE CIRCUIT POWER SUPPLY OR REPEATED REPLACE- MENT OF PROTECTIVE CIRCUIT BATTERY (see also Part I, Section HI.

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1 TROUBLE : I: EXCESSIVE DRAIN OF PROTECTIVE CIRCUIT POWER SUPPLY OR REPEATED REPLACE- MENT OF PROTECTIVE CIRCUIT BATTERY (see also Part I, Section HI... Short circuit in protective circuit Repair or replace defective wirwiring (remove wires from terminals ing (check for pierced insulati*jn 5 and 6 of panel and from protec- in protective circuit wj-ring tive circuit power supply. See Part I, caused by tacks, stap.les or Section H for tracing short circuits). pinching. Check where wires go through walls or around pipes). Short circuit in sensitive relay coil 8. Replace sensitive relay if re- (located above terminals 5 and 6 on sistance check indicates subrelay panel 1. stantially less than 750 ohms (or less than 300 ohms in the of Nos. 100 and 110). case TROUBLE: 2. BELL SOUNDS WHENEVER KEY SWITCH IS TURNED TO ON (OR NIGHT) POSIT ION. Break in protective circuit wires. Check protective circuit as contacts, foil, or sensitive relay described in Part I, Section H. coi I. Check sensitive relay coil with an ohmmeter. Look for 750 ohms. Sticking latching relay or sensitive 8. Visually inspect relay contacts relay contacts (latching relay is for sticking condition. Clean located above terminals I and 2 on and burnish as required (use the rear of relay panel; sensitive burnishing tool and/or spray relay is located above terminals cleaner, catalog Nos. 316 and 317). 5 and 6 on the rear of relay panel I. Replace relay if cleaning fails to cure condition. TROUBLE : 3. BELL(S) RINGS BUT DOES NOT GIVE FULL SOUN (See also Part I, Section HI. Low bell battery or power supply Replace battery if voltage meavoltage (in the case of a recharge- sures substantially less than 6 able power supply, be sure that the volts while the bell is operating. batteries are fully charged - charge Allow rechargeable batteries to batteries for 24 hours without a load. charge ful ly. 8. Bell line run does not conform to. Make changes in bell wiring. soecified Drocedures (See note at the end of this section; see also, Part I, Section G). 111

2 .. : Improper bell mounting clapper to jam. has caused Inspect mounting and bell dome,r \ position. Correct any binding ~, or jamming. i. Short circuit in bell wires (see Part I, Section G for troubleshooting bell connection). Defective bell (if possible, test system with new bell). Replace wires to bell, being careful to avoid conditions that will cause short circuits. Replace bell if necessary. Short circuit in coil of latching Replace latching relay if re- (drop) relay (located above termi- sistance check indicates subnals I and 2 on relay panel). stantially less than 50 ohms). G. Dirty or corroded key switch contacts. G. Replace key switch with proper type (see catalog). H. Dirty or corroded latching (drop) H. Clean and/or burnish relay conrelay contacts (located above ter- tacts with burnishing tool and minals I and 2 of relay panel). spray cleaner (catalog Nos. 316 and 317). TROUBLE: 4. WITH SYSTEM ARMED (KEY AT ON OR NIGHT POSITION), BELL DOES NOT OPERATE WHEN ;I PROTECTIVE CIRCUIT IS BROKEN. (See also Part I, Section HI. r;\ / Stuck contact in protective circuit failing to release on entry. Disconnected or discharged bell battery or power supply (be sure any recharseable batteries in Recharge-AzPacks are fully charged; charge batteries for 24 hours without a load). Check each contact for proper operation. Replace as necessary. Check connections of bell battery or power supply to terminals 3 and 4 of control panel. Replace defective batteries if they do not measure substantially close to 6 volts when the bell or other sounding device is operating. Disconnected, broken, or shorted wires Check wiring and repair or replace between relay panel and bell. Check as needed (see Part I. Section G). wiring between terminals I and 2 on control panel to the bell. Dirty contacts on protective circuit (sensitive)reiay (located above terminals 5 and 6 on control panel). Dirty or corroded key switch contacts. Clean relay contacts with burnishing tool and/or spray (see catalog Nos. 316 and 317). Replace keyswitch with proper type (see catalog). 112

3 a Bound bell clapper. Free or adjust bell clapper, If necessary, replace bell. TROUBLE : 5. BELL CIRCUIT DOES NOT LATCH ON ALARM. WHEN THE CONDITION CAUSING ALARM IS CORGECTED, THE BELL STOPS EVEN THOUGH THE KEYSWITCH REMAINS IN THE ON (OR NIGHT) POSITION. Dirty contacts on latching (drop) relay (located above terminals I and 2 on relay panel). Clean relay contacts with burnishing tool and/or spray (see catalog Nos. 316 and 317). Open circuit in coil of latching (drop) relay (located above terminals I and 2 on relay panel. Look for approximately 56 ohms with an ohmmeter placed across coil winding). Replace latching relay if ohmmeter check on coil reveals an open circuit. TROUBLE : 6. FALSE ALARMS OCCUR DUR TO SWINGERS IN PROTECTIVE CIRCUIT (see Also Part I, Section HI. Swinqer or intermittent break in protective circuit loop. Use No. I2 tester or equivalent to locate faults. (See Part I, Section H for instructions). Weak batteries or insufficiently charged power source supplying protective circuit (check panel ammeter for 3 to 4 ma. current draw during circuit test; 6 ma. in the case of rechargeable power sources supplying 6 volts). Replace batteries if defective. Be sure that any rechargeable batteries in Recharge-A-Packs are fully charged (charge batteries for 24 hours without a load). Dirty or corroded key switch cpntacts. Replace key switch with proper type (see catalog). TROUBLE: 7. AMMETER READING ON CONTROL PANEL IS ZERO OR LESS THAN 3 MILLIAMPS WHEN KEY SWITCH IS IN CIRCUIT TEST POSITION (Does not apply to Nos. 100 and and II0 Controls). A protected point of entry is open. Check all windows and doors.close any opened door and windows in protective circuit. 113

4 Dead battery in protective circuit. Replace battery. Be sure there is no shorted wiring causing shortened battery life. /. (:.. //+, Defective Recharge-A-Pack powering protective circuit. All discharged batteries of this type should be charged for 24 hours without a load. Be sure Recharae-A-Packs are fullv charged and operating within their maximum output capacity. After charging sufficiently, use a voltmeter to measure battery output under operating conditions. A break or short exists in protective circuit wiring. Repair or replace defective wiring. Check wiring at relay panel for shorts at screw terminals 5 and 6 (use Part I, Section H to help find trouble). Open circuit in the sensitive relav coi I. Replace sensitive relay if ohmmeter check reveals an open circuit. Defective panel ammeter. If alarm system works normally but ammeter reads zero when key is in CIRCUIT TEST position, (with all points of entry closed), a defective ammeter is indicated. Replace ammeter with proper type (see catalog for details). TROUBLE: 8. BELL OR OTHER SOUNDING DEVICE DOES NOT OPERATE DURING BELL TEST POSITION OF KEY SW ITCH. Problems may exist in the power supply, bell, bell wiring, relay contacts, or terminal connections. See TROUBLE 4, Sections B, C, D, E, and 8. Dirtv or corroded contacts in kev Replace key switch with proper switch. type (see catalog). On Nos and 1003 controls, the Restore jumper if bell test white jumper wire on the rear of the function is desired. key switch has been cut (cutting this jumper eliminates bell testing capabi I ity). TROUBLE: 9. STEPPING ON FLOOR MAT (IF USED) DOES NOT TRIP THE ALARM. Too much resistance in wires from floor mat. See Installation Notes on floor mats, pages !r? 114

5 a : I.., Improper mat installation. See Installation Notes on floor mats. paqes..a _ TROUBLE: IO. WHEN US I NG A SIREN, HOWLER, OR BLASTER, THERE I S NO SOUND OUTPUT ON ALARM. Problems exist with particular sounding device and/or module supplying signal. Wirinq breaks and/or short circljits do not permit device(s) to oderate. Polarity to driver module is reversed at relay panel. Disconnected or discharged bell battery or power supply (be sure any rechargeab I e batter i es in Recharge-AIPacks are f u I ly charged; charge batteries for 24 hours wtihout a load. Wires leading from control panel to sounding devices do not conform to specified procedures. After first making the checks outlined below, see the Troubleshooting Section for the particular sounding devices and modules being used_. Check all wiring to s,ounding de- Repair vices. quired. In the case of sirens -driver modules, check for a blown fuse. Observe proper polarity, Bear in mind that terminal I on relay panel is negative (-1 and terminal 2 is positive (+I. Check connections of bell battery or power supply to terminals 3 and 4 of control panel. Replace defective batteries if they do not measure substantially close to 6 volts when the bell or other sounding device is operating. Make changes in wiring (see note at the end of this section; see also Part I, Section G). TROUBLE: II. WHEN USING A STROBE LIGHT AS AN ALARM WHEN ACTIVATE Polarity reversed to strobe light. INDICATOR, THE LIGHT FAILS TO FLASH Observe proper polarity. To terminal I of the relay panel attach the negative (-1 wire. To tetminal 2, attach the positive (+I wire. 115

6 Trouble in strobe light circuitry, Correct particular trouble as burned out strobe lamp, breaks in required. wiring. Low battery or power supply voltage Replace battery if voltage (in the case of a rechargeable measures less than 6 volts power supply, be.sure that the bat- while bell is operating. Allow teries are f u I I y charged - charge rechargeable batteries to batteries for 24 hours w 1 thout a charge ful ly. -load. (,,/hi i NOTE: WIRE RUNS FOR BELLS OR.OTHER SOUNDING DEVICES For runs of up to 50 feet, use I6 gauge wire. For runs between 50 and 100 feet, use I4 gauge wire, or preferably double I6 gauge wire (thus having four wires going to the sounding device). For wire runs of over 100 feet, see Part I, Section G of this manual. 116

KEYLESS ENTRY SYSTEM

KEYLESS ENTRY SYSTEM 1995 Volvo 850 1995 ACCESSORIES & EQUIPMENT Volvo Keyless Entry Systems 850 DESCRIPTION & OPERATION 850 models with central locking and factory installed alarm system can be equipped