THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S). Power Requirement M-IS21

ORER NO. RRV2143 STEREO POWER MPLIFIER M-IS21 THIS MNUL IS PPLILE TO THE FOLLOWING MOEL(S) N TYPE(S). Model Type Power Requirement Remarks M-IS21 KUXJ 120V This product is a component of a system. For the accessories, instruction manuals etc., refer to the service manuals RRV2149 for X-IS21M and RRV2148 for X-IS21T. This product does not function properly when independent; to avoid malfunctions, be sure to connect it to the prescribed system component(s), otherwise damage may result. omponent System IS-21M IS-21T Service Manual Remarks M TUNER X-IS21M RRV2149 TUNER EK X-IS21T RRV2148 STEREO POWER MPLIFIER M-IS21 M-IS21 RRV2143 This Service Manual SPEKER SYSTEM S-IS21 S-IS21 RRV2141 ONTENTS 1. SFETY INFORMTION... 2 2. EXPLOE VIEWS N PRTS LIST... 3 3. SHEMTI IGRM... 6 4. P ONNETION IGRM... 8 5. P PRTS LIST... 14 6. JUSTMENT... 16 7. GENERL INFORMTION... 17 7.1 SINGLE OPERTION METHO... 17 8. PNEL FILITIES N SPEIFITIONS... 18 PIONEER ELETRONI ORPORTION 4-1, Meguro 1-home, Meguro-ku, Tokyo 153-8654, Japan PIONEER ELETRONIS SERVIE, IN. P.O. ox 1760, Long each, 90801-1760, U.S.. PIONEER ELETRONI (EUROPE) N.V. Haven 1087, Keetberglaan 1, 9120 Melsele, elgium PIONEER ELETRONIS SIENTRE PTE. LT. 253 lexandra Road, #04-01, Singapore 159936 PIONEER ELETRONI ORPORTION 1999 T ZZK MY. 1999 Printed in Japan

1. SFETY INFORMTION This service manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair complex products such as those covered by this manual. Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty. If you are not qualified to perform the repair of this product properly and safely, you should not risk trying to do so and refer the repair to a qualified service technician. WRNING This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of alifornia to cause cancer, birth defects or other reproductive harm. Health & Safety ode Section 25249.6 Proposition 65 NOTIE (FOR NIN MOEL ONLY) Fuse symbols (fast operating fuse) and/or (slow operating fuse) on P indicate that replacement parts must be of identical designation. REMRQUE (POUR MOÈLE NIEN SEULEMENT) Les symboles de fusible (fusible de type rapide) et/ou (fusible de type lent) sur I indiquent que les pièces de remplacement doivent avoir la même désignation. (FOR US MOEL ONLY) 1. SFETY PREUTIONS The following check should be performed for the continued protection of the customer and service technician. LEKGE URRENT HEK Measure leakage current to a known earth ground (water pipe, conduit, etc.) by connecting a leakage current tester such as Simpson Model 229-2 or equivalent between the earth ground and all exposed metal parts of the appliance (input/output terminals, screwheads, metal overlays, control shaft, etc.). Plug the line cord of the appliance directly into a 120V 60 Hz outlet and turn the power switch on. ny current measured must not exceed 0.5 m. evice under test lso test with plug reversed (Using adapter plug as required) Test all exposed metal surfaces Leakage Test Leakage current tester Reading should not be above 0.5 m Earth ground NY MESUREMENTS NOT WITHIN THE LIMITS OUTLINE OVE RE INITIVE OF POTENTIL SHOK HZR N MUST E ORRETE EFORE RETURN- ING THE PPLINE TO THE USTOMER. 2. PROUT SFETY NOTIE Many electrical and mechanical parts in the appliance have special safety related characteristics. These are often not evident from visual inspection nor the protection afforded by them necessarily can be obtained by using replacement components rated for voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in this Service Manual. Electrical components having such features are identified by marking with a on the schematics and on the parts list in this Service Manual. The use of a substitute replacement component which does not have the same safety characteristics as the PIONEER recommended replacement one, shown in the parts list in this Service Manual, may create shock, fire, or other hazards. Product Safety is continuously under review and new instructions are issued from time to time. For the latest information, always consult the current PIONEER Service Manual. subscription to, or additional copies of, PIONEER Service Manual may be obtained at a nominal charge from PIONEER. 2

2. EXPLOE VIEWS N PRTS LIST NOTES: Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List. The mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation. Screws adjacent to mark on product are used for disassembly. 2.1 PKING 1 4 2 PKING PRTS LIST Mark No. escription Part No. 1 Side Pad L H7238 2 Side Pad R H7239 3 Packing ase MP MY H7748 4 Packing Sheet HG7053 3 3

2.2 EXTERIOR 36 32 26 32 36 36 28 34 32 8 36 32 32 19 14 11 20 15 36 7 36 10 27 6 29 31 11 1 12 9 4 32 32 5 36 16 38 37 25 28 32 13 32 4

aution when disassemble. Even if the power supply code is pulled out from the outlet, neither 11 nor 12 of F SSY are discharged. Please discharge 11 and 12 of F SSY by the resistor of 100 Ω or more before removing F SSY or POWER SUPPLY SSY. There is a possibility to destroy the transistor, and Please discharge by the resistor of 100 Ω or more. 33 33 21 2 18 23 30 30 22 30 12 30 23 33 33 35 35 17 3 EXTERIOR PRTS LIST Mark No. escription Part No. Mark No. escription Part No. 1 F ssy WU7343 2 MP ssy WU7342 3 POWER SUPPLY ssy WU7344 NSP 4 PRIMRY ssy WU7348 NSP 5 SEONRY ssy WU7350 6 HP ssy WU7352 7 METER ssy WU7353 8 METER ONNET ssy WU7356 9 Power Transformer TS7250 10 Fuse (FU1 : 5) REK1067 11 VU Meter W7002 12 FN Motor XM7003 NSP 13 hassis N7086 14 Rear Panel N7824 15 Lens K7614 16 Rubber Sheet E1111 17 Mold MR7005 18 Mold MR7006 19 Lens Holder MR7245 20 Refrector MR7248 21 Holder NG7009 22 Power P Holder NG7109 23 Heat Sink NH7058 24 25 Escutcheon K7617 26 Top Panel N7192 27 Front Panel M7564 28 Side onnet NE7242 29 Screw With Washer 1005 30 Screw 1021 31 Screw FT40P060FZK 32 Screw Z30P080FM 33 Screw Z30P180FM 34 Screw MZ30P060FZK 35 Screw PZ30P350FZK 36 Screw VPZ30P080FM 37 inder Z-SK90K NSP 38 IN ssy WU7349 aution : e careful when No.10 Fuse(FU1:5) is exchanged. Please remove No.32 Screw of Rear Panel, remove No.1 F ssy backward with No.14 Rear Panel, and exchange No.10 Fuse(FU1:5). (Fuse aution is displayed in SIE of No.1 F ssy. ) 5

3. SHEMTI IGRM 3.1 F, MP, POWER SUPPLY, PRIMRY, SEONRY, HP, METER and METER ONNET SSYS MP SSY (WU7342) POWER SUPPLY SSY (WU7344) 6

5 6 7 8 M-IS21 UTION : FOR ONTINUE PROTETION GINST RISK OF FIRE, REPLE ONLY WITH SME TYPE NO. 491002F, MF Y LITTELFUSE INK. FOR I42 (EK7067). UTION : FOR ONTINUE PROTETION GINST RISK OF FIRE, REPLE ONLY WITH SME TYPE NO. 4911.25, MF Y LITTELFUSE INK. FOR I33 (EK7048). : UIO SIGNL ROUTE Note : When ordering service parts, be sure to refer to "EXPLOE VIEWS and PRTS LIST" or "P PRTS LIST" G F METER SSY (WU7353) HP SSY (WU7352) H METER ONNET SSY (WU7356) PRIMRY SSY (WU7348) E SEONRY SSY (WU7350) UTION : FOR ONTINUE PROTETION GINST RISK OF FIRE, REPLE ONLY WITH SME TYPE NO. 491007, MF Y LITTELFUSE INK. FOR I11, I12 (EK7021). UTION : FOR ONTINUE PROTETION GINST RISK OF FIRE, REPLE ONLY WITH SME TYPE NO. 491005, MF Y LITTELFUSE INK. FOR I21, I22 (EK7019). REK1067 (5) UTION : FOR ONTINUE PROTETION GINST RISK OF FIRE, REPLE ONLY WITH SME TYPE NO. 491004, MF Y LITTELFUSE INK. FOR I31 (EK7018). POWER OR KUXJ TYPE : XG3007 F SSY (WU7343) UTION : FOR ONTINUE PROTETION GINST RISK OF FIRE, REPLE ONLY WITH SME TYPE NO. 49103.5, MF Y LITTELFUSE INK. FOR I41 (EK7017). NOTE FOR FUSE REPLEMENT UTION -FOR ONTINUE PROTETION GINST RISK OF FIRE. REPLE WITH SME TYPE N RTINGS ONLY. 5 6 7 8 E F G H 120V 7

4. P ONNETION IGRM NOTE FOR P IGRMS: 1. Part numbers in P diagrams match those in the schematic diagrams. 2. comparison between the main parts of P and schematic diagrams is shown below. Symbol in P iagrams E Symbol in Schematic iagrams E E Part Name Transistor 3. The parts mounted on this P include all necessary parts for several destination. For further information for respective destinations, be sure to check with the schematic diagram. 4. Viewpoint of P diagrams apacitor onnector SIE E E E Transistor with resistor P..oard hip Part SIE G S G S G S Field effect transistor Resistor array 3-terminal regulator 4.1 PRIMRY and SEONRY SSYS E SEONRY SSY PRIMRY SSY 3101 POWER TRNSFORMER (NP7300-) SIE N LUE L ROWN 8 E

M-IS21 4.2 HP, METER and METER ONNET SSYS H METER ONNET SSY G METER SSY F HP SSY N3105 N3104 (NP7300-) POWER METER SIE G METER SSY Q5604 F HP SSY I5601 H METER ONNET SSY Q5601 Q5602 Q5603 (NP7300-) SIE F G H 9

4.3 F SSY I3302 X-IS21M or X-IS21T N3006 N3003 F J3004 N3002 G J3005 I82 I81 Q81 F SSY E 3001 L ROWN N LUE IN NEUTRL LIVE SIE (NP7300-) 10

M-IS21 F SSY SIE Q3313 Q3602 Q85 Q3603 Q3601 Q3607 Q3608 Q3606 Q3605 (NP7300-) Q3621 Q82 11

4.4 MP and POWER SUPPLY SSYS POWER SUPPLY SSY I24 I23 Q33 Q43 Q42 Q32 Q3651 Q3654 I33 I42 N3106 N3102 N3103 MP SSY Q3502 Q3501 I3301 12 SIE (NP7300-) Q3352 Q3351

M-IS21 I32 Q31 Q41 POWER SUPPLY SSY Q3652 Q3653 Q3311 Q3312 MP SSY Q3503 I3502 I3501 Q3353 Q3354 SIE (NP7300-) 13

5. P PRTS LIST NOTES: Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List. The mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation. When ordering resistors, first convert resistance values into code form as shown in the following examples. Ex.1 When there are 2 effective digits (any digit apart from 0), such as 560 ohm and 47k ohm (tolerance is shown by J=5%, and K=10%). 560 47k 0.5 1 56 x 10 1 47 x 10 3 R50 1R0 561 473 R1/4PU 561J R1/4PU 473J RN2H R50K RS1P 1R0K Ex.2 When there are 3 effective digits (such as in high precision metal film resistors). 5.62k 562 x 10 1 5621 RN1/4P 5621F Mark No. escription Part No. Mark No. escription Part No. LIST OF SSEMLIES NSP MIN SSY WK7515 F SSY WU7343 MP SSY WU7342 POWER SUPPLY SSY WU7344 NSP PRIMRY SSY WU7348 NSP SEONRY SSY WU7350 HP SSY WU7352 METER SSY WU7353 METER ONNET SSY WU7356 F SSY SEMIONUTORS I82 NJM78M56F Q3601, Q3621 2S1037K Q3602, Q3603, Q3605 Q3608 2S2412K Q81 2S1859X Q3313, Q85 T124EK Q82 T124EK 3601, 3603 3606, 3609, 3621 1SS133 3625, 3626, 3651, 3652 1SS133 85 87 1SS133 11, 21 3S20() 3608 31 34, 41 44 81 84 MTZJ5.6 S5566G(TP2) S5688G OILS N FILTERS L1 LINE FILTER TF7020 L3331, L3332 (1µH) TH-133 TRNSFORMERS T1 STNY TRNSFORMER TT7049 SWITHES N RELYS RY3601 SP RELY/12V SR7008 RY81 SR7018 82 ET221M25 41 ET222M25 31 ET222M35 3621 ET2R2M2 21, 22 ET332M50 3325 3331 3334 9011 ETR10M50 KSQYF104Z50 QM102K2E RESISTORS R1 (2.2MΩ/ 1/2W) RN1080 R3333, R3334 R1/4LMF100J R82 R1/4PU220J R3601, R3602 RS3LMFR22J Other Resistors RS1/10S J OTHERS 3101 12P LE HOLER 51048-1200 N3105 4PJUMPER ONNETOR 52151-0410 J3333 2P PIN JK K7043 N3332 10P SOKET KP7048 N3103 5P SOKET KP7051 N3106 11P SOKET KP7052 N3102 14P SOKET KP7053 H1, H2 FUSE LIP KR7001 N1 INLET 1P KP7032 J3001 JUMPER WIRE 20PYY1220E N3331 4P SPEKER TERMINL MP SSY SEMIONUTORS XKE3001 I3501,I3502 NJM4558M I3301 STK407-070 Q3354 2S1037K Q3353 2S2412K Q3311, Q3312 2S2114K PITORS 1 3 (10000pF/250V) G7020 11, 12 (2200µF/71v) H7117 3602, 84 ET100M50 83 ET1R0M50 3601 ET221M16 Q3501, Q3502 2SK246 Q3503 T124EK Q3351 IRFI9Z34G Q3352 IRFIZ34G 3301, 3302 1SR139-100 14

Mark No. escription Part No. Mark No. escription Part No. 3351 3354, 3361, 3362 1SS133 3355, 3356 LT203 3357, 3358 MTZJ10 3359, 3360 MTZJ18 3363, 3364 MTZJ39 PITORS 3319, 3320 SQH10050 3317, 3318 ENP100M35 3313, 3314 ENP2R2M50 3303, 3304 ET101M50 3506 3508 ET1R0M50 3501, 3502, 3509, 3510 ET470M25 3315, 3316 KSQY332K50 3503, 3504 KSQY682K50 RESISTORS R3353, R3354 R1/4PU101J R3510 R1/4PU104J Other Resistors RS1/10S J OTHERS N3003 5P PLUG N3006 11P PLUG POWER SUPPLY SSY KM7010 KM7011 SEMIONUTORS I33 PROTETOR(1.25) EK7048 I42 PROTETOR(2) EK7067 I32 NJM4558M I23 NJM7805F I24 NJM7905F Q33, Q43 2S1566 Q32, Q3654, Q42 2S1740S Q3652 2S2412K Q3651 T143ES Q3653 T124EK 3654 3656, 9021 9024, 9026 1SS133 9029 1SS133 9030 MTZJ24 36, 46 MTZJ3.0 35, 45 MTZJ5.1 9027, 9028 MTZJ6.8 PITORS 27, 28, 35, 45 ET100M50 3652 ET101M16 25, 26, 3651 ET1R0M50 3654 ET220M35 42, 43 ET470M16 32, 33 ET470M25 44 KSQY102K50 3653, 9027, 9028 KSQYF104Z50 RESISTORS R35 R1/2LMF121J R45 R1/2LMF910J R3659 R1/2PM330J Other Resistors RS1/10S J OTHERS N3002 14P PLUG E PRIMRY SSY PRIMRY assembly has no service part. SEONRY SSY KM7012 SEMIONUTORS I41 PROTETOR(3.5) EK7017 I31 PROTETOR(4) EK7018 I21, I22 PROTETOR(5) EK7019 I11, I12 PROTETOR(7) EK7021 OTHERS 3001 12P LE HOLER 51048-1200 F HP SSY RESISTORS R3991, R3992 RS2LMF331J Other Resistors RS1/10S J OTHERS 3004 5P LE HOLER 51048-0500 3991 MINI JK KN7003 J3004 5P JUMPER WIRE 20PYY0535E G METER SSY SEMIONUTORS I5601 NJM4558M Q5601 2S1037K Q5602 T124EK Q5603, Q5604 T124EK 5601, 5605, 5606 1SS133 5608 5604 5607 MTZJ10 MTZJ12 MTZJ5.1 PITORS 5603, 5607 ET1R0M50 5604, 5605 KSQYF104Z50 RESISTORS ll Resistors RS1/10S J 15

Mark No. escription Part No. OTHERS 5601 3P LE HOLER 51048-0300 3005 4P LE HOLER 51048-0400 J3005 4P JUMPER WIRE 20PYY0410E 6. JUSTMENT There is no information to be shown in this chapter. H METER ONNET SSY SEMIONUTORS 5603 5602 MTZJ5.6 NSPF50S-8451 RESISTORS ll Resistors RS1/10S J OTHERS 5602 3P LE HOLER 51048-0300 J5601 3P JUMPER WIRE 20PYY0315E 16

7. GENERL INFORMTION 7.1 SINGLE OPERTION METHO Single operation method and inputlevel. The procedure and the input level of a single operation are shown below. 1. R85 are shorted by 1kΩ. 2. point of the figure below in four places is connected. GN is not common because it is independent with chassis GN (GN of the amplifier), 1GN, 2GN, and 3GN. The potential of 1GN, 2GN, and 3GN is done by connecting point in four places as well as chassis GN. 2. The power supply of the product is turned on. 3. the terminal ONT (2 pin of N3332) are controlled respectively by the following voltages. ONT 12V 5V 0V RY ON ON OFF MUTE OFF ON ON 4. The signal of 10mV is input from input terminal (J3333), and the output is confirmed with speaker terminal (N3331). Note : If the music signal is input directly to input terminal (J3333) with PLYER etc., the output becomes a large volume because there are 40d GIN of the amplifier. F SSY ONNET POINT (GN) (FOUR PLES) INPUT SIGNL 10mV ONTROLL 0V, 5V or 12V SIE OUTPUT SIGNL R85 1kΩ aution when disassemble. Even if the power supply code is pulled out from the outlet, neither 11 nor 12 of F SSY are discharged. Please discharge 11 and 12 of F SSY by the resistor of 100 Ω or more before removing F SSY or POWER SUPPLY SSY. There is a possibility to destroy the transistor, and Please discharge by the resistor of 100 Ω or more. 17

8. PNEL FILITIES N SPEIFITIONS PNEL FILITIES SPEIFITIONS 7 mplifier Section ontinuous average power output of 55 watts* per channel, min., at 6 ohms, from 60 Hz to 15,000 Hz with no more than 1.0 %** total harmonic distortion. * Measured pursuant to the Federal Trade ommission s Trade Regulation rule on Power Output laims for mplifiers. ** Measured by udio Spectrum nalyzer. 7 Micellaneous Power Requirements... 120 V, 60 Hz Power onsumption... 120 W, 160 V Power onsumption in standby mode... 1 W imensions: Power mplifier... 150 (W) x 300 (H) x 233 () mm 5-7/8 (W) x 11-13/16 (H) x 9-3/16 () in. Weight: Power mplifier... 4.0 kg (8 lb 13 oz) NOTE: Specifications and design subject to possible modification without notice, due to improvements. POWER OUTPUT METER PHONES jack 18

ORER NO. RRV2129 STEREO POWER MPLIFIER M-IS21 THIS MNUL IS PPLILE TO THE FOLLOWING MOEL(S) N TYPE(S). Type Model M-IS21 Power Requirement Remarks MYXJ 220-230V NVXJ 230V This product is a component of a system. For the accessories, instruction manuals etc., refer to the service manuals RRV2124 for X-IS21M and RRV2123 for X-IS21T. This product does not function properly when independent; to avoid malfunctions, be sure to connect it to the prescribed system component(s), otherwise damage may result. omponent System IS-21M IS-21T Service Manual Remarks M TUNER X-IS21M RRV2124 TUNER EK X-IS21T RRV2123 STEREO POWER MPLIFIER M-IS21 M-IS21 RRV2129 This Service Manual SPEKER SYSTEM S-IS21 S-IS21 RRV2128 ONTENTS 1. SFETY INFORMTION... 2 2. EXPLOE VIEWS N PRTS LIST... 3 3. SHEMTI IGRM... 6 4. P ONNETION IGRM... 8 5. P PRTS LIST... 14 6. JUSTMENT... 16 7. GENERL INFORMTION... 17 7.1 SINGLE OPERTION METHO... 17 8. PNEL FILITIES N SPEIFITIONS... 18 PIONEER ELETRONI ORPORTION 4-1, Meguro 1-home, Meguro-ku, Tokyo 153-8654, Japan PIONEER ELETRONIS SERVIE, IN. P.O. ox 1760, Long each, 90801-1760, U.S.. PIONEER ELETRONI (EUROPE) N.V. Haven 1087, Keetberglaan 1, 9120 Melsele, elgium PIONEER ELETRONIS SIENTRE PTE. LT. 253 lexandra Road, #04-01, Singapore 159936 PIONEER ELETRONI ORPORTION 1999 T ZZK PR. 1999 Printed in Japan

2.2 EXTERIOR 36 32 26 32 36 36 28 34 32 8 36 32 32 19 14 11 20 15 36 7 36 10 27 6 29 31 11 1 12 9 4 32 32 5 36 16 38 37 25 28 32 13 32 4

aution when disassemble. Even if the power supply code is pulled out from the outlet, neither 11 nor 12 of F SSY are discharged. Please discharge 11 and 12 of F SSY by the resistor of 100 Ω or more before removing F SSY or POWER SUPPLY SSY. There is a possibility to destroy the transistor, and Please discharge by the resistor of 100 Ω or more. 33 33 21 2 18 23 30 30 22 30 12 30 23 33 33 35 35 17 3 (1) EXTERIOR PRTS LIST Mark No. escription Part No. Mark No. escription Part No. 1 F ssy WU7337 2 MP ssy WU7340 3 POWER SUPPLY ssy WU7344 NSP 4 PRIMRY ssy WU7345 NSP 5 SEONRY ssy WU7350 6 HP ssy WU7351 7 METER ssy WU7353 8 METER ONNET ssy WU7356 9 Power Transformer TS7249 10 Fuse (FU1 : T2.5) REK1026 11 VU Meter W7002 12 FN Motor XM7003 NSP 13 hassis N7086 14 Rear Panel See ontrast table (2) 15 Lens K7614 21 Holder NG7009 22 Power P Holder NG7109 23 Heat Sink NH7058 24 25 Escutcheon K7617 26 Top Panel N7192 27 Front Panel M7564 28 Side onnet NE7242 29 Screw With Washer 1005 30 Screw 1021 31 Screw FT40P060FZK 32 Screw Z30P080FM 33 Screw Z30P180FM 34 Screw MZ30P060FZK 35 Screw PZ30P350FZK 16 Rubber Sheet E1111 17 Mold MR7005 18 Mold MR7006 19 Lens Holder MR7245 20 Refrector MR7248 (2) ONTRST TLE 36 Screw VPZ30P080FM 37 inder Z-SK90K NSP 38 IN ssy WU7349 M-IS21/MYXJ and NVXJ are constructed the same except for the following : Part No. Mark No. Symbol and escription MYXJ Type NVXJ Type 14 Rear Panel N7823 N7839 Remarks 5

3. SHEMTI IGRM 3.1 F, MP, POWER SUPPLY, PRIMRY, SEONRY, HP, METER and METER ONNET SSYS MP SSY (WU7340) POWER SUPPLY SSY (WU7344) 6

5 6 7 8 M-IS21 UTION : FOR ONTINUE PROTETION GINST RISK OF FIRE, REPLE ONLY WITH SME TYPE NO. 491002F, MF Y LITTELFUSE INK. FOR I42 (EK7067). UTION : FOR ONTINUE PROTETION GINST RISK OF FIRE, REPLE ONLY WITH SME TYPE NO. 4911.25, MF Y LITTELFUSE INK. FOR I33 (EK7048). : UIO SIGNL ROUTE Note : When ordering service parts, be sure to refer to "EXPLOE VIEWS and PRTS LIST" or "P PRTS LIST" G F METER SSY (WU7353) HP SSY (WU7351) H METER ONNET SSY (WU7356) PRIMRY SSY (WU7345) E SEONRY SSY (WU7350) UTION : FOR ONTINUE PROTETION GINST RISK OF FIRE, REPLE ONLY WITH SME TYPE NO. 491007, MF Y LITTELFUSE INK. FOR I11, I12 (EK7021). UTION : FOR ONTINUE PROTETION GINST RISK OF FIRE, REPLE ONLY WITH SME TYPE NO. 491005, MF Y LITTELFUSE INK. FOR I21, I22 (EK7019). REK1026 (T2.5) UTION : FOR ONTINUE PROTETION GINST RISK OF FIRE, REPLE ONLY WITH SME TYPE NO. 491004, MF Y LITTELFUSE INK. FOR I31 (EK7018). POWER OR MYXJ TYPE : XG3001 NVXJ TYPE : G1156 F SSY (WU7337) UTION : FOR ONTINUE PROTETION GINST RISK OF FIRE, REPLE ONLY WITH SME TYPE NO. 49103.5, MF Y LITTELFUSE INK. FOR I41 (EK7017). NOTE FOR FUSE REPLEMENT UTION -FOR ONTINUE PROTETION GINST RISK OF FIRE. REPLE WITH SME TYPE N RTINGS ONLY. 5 6 7 8 E F G H 220-230V 7

4.3 F SSY I3302 X-IS21M or X-IS21T N3006 N3003 F J3004 N3002 G J3005 I82 I81 Q81 F SSY E 3001 L ROWN N LUE IN NEUTRL LIVE SIE (NP7300-) 10

M-IS21 F SSY SIE Q3313 Q3602 Q85 Q3603 Q3601 Q3607 Q3608 Q3606 Q3605 (NP7300-) Q3621 Q82 11

4.4 MP and POWER SUPPLY SSYS POWER SUPPLY SSY I24 I23 Q33 Q43 Q42 Q32 Q3651 Q3654 I33 I42 N3106 N3102 N3103 MP SSY Q3502 Q3501 I3301 12 SIE (NP7300-) Q3352 Q3351

M-IS21 I32 Q31 Q41 POWER SUPPLY SSY Q3652 Q3653 Q3311 Q3312 MP SSY Q3503 I3502 I3501 Q3353 Q3354 SIE (NP7300-) 13

5. P PRTS LIST NOTES: Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List. The mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation. When ordering resistors, first convert resistance values into code form as shown in the following examples. Ex.1 When there are 2 effective digits (any digit apart from 0), such as 560 ohm and 47k ohm (tolerance is shown by J=5%, and K=10%). 560 47k 0.5 1 56 x 10 1 47 x 10 3 R50 1R0 561 473 R1/4PU 561J R1/4PU 473J RN2H R50K RS1P 1R0K Ex.2 When there are 3 effective digits (such as in high precision metal film resistors). 5.62k 562 x 10 1 5621 RN1/4P 5621F Mark No. escription Part No. Mark No. escription Part No. LIST OF SSEMLIES NSP MIN SSY WK7512 F SSY WU7337 MP SSY WU7340 POWER SUPPLY SSY WU7344 NSP PRIMRY SSY WU7345 NSP SEONRY SSY WU7350 HP SSY WU7351 METER SSY WU7353 METER ONNET SSY WU7356 F SSY SEMIONUTORS I82 NJM78M56F Q3601, Q3621 2S1037K Q3602, Q3603, Q3605 Q3608 2S2412K Q81 2S1859X Q3313, Q85 T124EK Q82 T124EK 3601, 3603 3606, 3609, 3621 1SS133 3625, 3626, 3651, 3652 1SS133 85 87 1SS133 11, 21 3S20() 3608 31 34, 41 44 81 84 MTZJ5.6 S5566G(TP2) S5688G OILS N FILTERS L1 LINE FILTER TF7019 L3331 L3334 (1µH) TH-133 TRNSFORMERS T1 STNY TRNSFORMER TT7050 SWITHES N RELYS RY3601 SP RELY/12V SR7008 RY81 SR7018 83 3601 41 31 3621 ET1R0M50 ET221M16 ET222M25 ET222M35 ET2R2M2 21, 22 ET332M50 82 ET471M25 3325 ETR10M50 3331 3334 KSQYF104Z50 9011 QM102K2E RESISTORS R3333, R3334 R1/4LMF101J R82 R1/4PU220J R3601, R3602 RS3LMFR22J Other Resistors RS1/10S J OTHERS 3101 12P LE HOLER 51048-1200 N3105 4PJUMPER ONNETOR 52151-0410 J3333 2P PIN JK K7043 N3332 10P SOKET KP7048 N3103 5P SOKET KP7051 N3106 11P SOKET KP7052 N3102 14P SOKET KP7053 H1, H2 FUSE LIP KR7001 N1 INLET 1P KP1046 J3001 JUMPER WIRE 20PYY1220E N3331 4P SPEKER TERMINL MP SSY SEMIONUTORS XKE3001 I3501,I3502 NJM4558M I3301 STK407-070 Q3354 2S1037K Q3353 2S2412K Q3311, Q3312 2S2114K PITORS 1 3 (10000pF/250V) G7020 3345, 3346 (10000pF/100V) G7021 11, 12 (2200µF/71v) H7117 3551 3554 SQH331J50 3602, 84 ET100M50 Q3501, Q3502 2SK246 Q3503 T124EK Q3351 IRFI9Z34G Q3352 IRFIZ34G 3301, 3302 1SR139-100 14

Mark No. escription Part No. Mark No. escription Part No. 3351 3354, 3361, 3362 1SS133 3355, 3356 LT203 3357, 3358 MTZJ10 3359, 3360 MTZJ18 3363, 3364 MTZJ39 PITORS 3319, 3320 SQH10050 3327, 3328 SQH680J50 3317, 3318 ENP100M35 3313, 3314 ENP2R2M50 3303, 3304 ET101M50 3506 3508 ET1R0M50 3501, 3502, 3509, 3510 ET470M25 3315, 3316 KSQY332K50 3503, 3504 KSQY682K50 3308 KSQY822K50 RESISTORS R3353, R3354 R1/4PU101J R3510 R1/4PU104J Other Resistors RS1/10S J OTHERS N3003 5P PLUG N3006 11P PLUG POWER SUPPLY SSY KM7010 KM7011 SEMIONUTORS I33 PROTETOR(1.25) EK7048 I42 PROTETOR(2) EK7067 I32 NJM4558M I23 NJM7805F I24 NJM7905F Q33, Q43 2S1566 Q32, Q3654, Q42 2S1740S Q3652 2S2412K Q3651 T143ES Q3653 T124EK 3654 3656, 9021 9024, 9026 1SS133 9029 1SS133 9030 MTZJ24 36, 46 MTZJ3.0 35, 45 MTZJ5.1 9027, 9028 MTZJ6.8 PITORS 27, 28, 35, 45 ET100M50 3652 ET101M16 25, 26, 3651 ET1R0M50 3654 ET220M35 42, 43 ET470M16 32, 33 ET470M25 44 KSQY102K50 3653, 9027, 9028 KSQYF104Z50 RESISTORS R35 R1/2LMF121J R45 R1/2LMF910J R3659 R1/2PM330J Other Resistors RS1/10S J OTHERS N3002 14P PLUG E PRIMRY SSY PRIMRY assembly has no service part. SEONRY SSY KM7012 SEMIONUTORS I41 PROTETOR(3.5) EK7017 I31 PROTETOR(4) EK7018 I21, I22 PROTETOR(5) EK7019 I11, I12 PROTETOR(7) EK7021 OTHERS 3001 12P LE HOLER 51048-1200 F HP SSY OILS N FILTERS L3992 L3994 HIP ES VTL1096 PITORS 3991, 3995, 3996 KSQY472K50 RESISTORS R3991, R3992 RS2LMF331J OTHERS 3004 5P LE HOLER 51048-0500 3991 MINI JK KN7003 J3004 5P JUMPER WIRE 20PYY0535E G METER SSY SEMIONUTORS I5601 NJM4558M Q5601 2S1037K Q5602 T124EK Q5603, Q5604 T124EK 5601, 5605, 5606 1SS133 5608 5604 5607 MTZJ10 MTZJ12 MTZJ5.1 PITORS 5603, 5607 ET1R0M50 5604, 5605 KSQYF104Z50 15

Mark No. escription Part No. RESISTORS ll Resistors RS1/10S J 6. JUSTMENT There is no information to be shown in this chapter. OTHERS 5601 3P LE HOLER 51048-0300 3005 4P LE HOLER 51048-0400 J3005 4P JUMPER WIRE 20PYY0410E H METER ONNET SSY SEMIONUTORS 5603 5602 MTZJ5.6 NSPF50S-8451 RESISTORS ll Resistors RS1/10S J OTHERS 5602 3P LE HOLER 51048-0300 J5601 3P JUMPER WIRE 20PYY0315E 16

8. PNEL FILITIES N SPEIFITIONS PNEL FILITIES SPEIFITIONS 7 mplifier Section ontinuous Power (RMS)... 100 W + 100 Wz (1 khz, TH 10%, 6 Ω) ontinuous Power (IN)... 65 W + 65 W (1 khz, TH 1%, 6 Ω) Music Power (IN)... 150 W + 150 W (1 khz, TH 1%, 6 Ω) bove specifications are for when the power supply is 230 V. 7 Micellaneous Power Requirements... 220-230 V, 50/60 Hz Power onsumption... 120 W Power onsumption in standby mode... 1 W imensions: Power mplifier... 150 (W) x 300 (H) x 233 () mm Weight: Power mplifier... 4.0 kg NOTE: Specifications and design subject to possible modification without notice, due to improvements. POWER OUTPUT METER PHONES jack 18

ORER NO. RRV2162 STEREO POWER MPLIFIER M-IS21 THIS MNUL IS PPLILE TO THE FOLLOWING MOEL(S) N TYPE(S). Type XJ LXJ/N Model M-IS21 Power Requirement 110-127V/220-230V/240V 110-120V/220-230V/240V The voltage can be converted by the following method. With the voltage selector With the voltage selector This service manual should be used together with the following manual(s): Model Order No. Remarks M-IS21/MYXJ RRV2129 PIONEER ELETRONI ORPORTION 4-1, Meguro 1-home, Meguro-ku, Tokyo 153-8654, Japan PIONEER ELETRONIS SERVIE, IN. P.O. ox 1760, Long each, 90801-1760, U.S.. PIONEER ELETRONI (EUROPE) N.V. Haven 1087, Keetberglaan 1, 9120 Melsele, elgium PIONEER ELETRONIS SIENTRE PTE. LT. 253 llexandra Road, #04-01, Singapore 159936 PIONEER ELETRONI ORPORTION 1999 T ZZR JUN 1999 Printed in Japan

1. ONTRST OF MISELLNEOUS PRTS NOTES: Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List. The mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation. Screws adjacent to mark on product are used for disassembly. Reference Nos. indicate the pages and Nos. in the service manual for the base model. When ordering resistors, first convert resistance values into code form as shown in the following examples. Ex.1 When there are 2 effective digits (any digit apart from 0), such as 560 ohm and 47k ohm (tolerance is shown by J=5%, and K=10%). 560 56 x 10 1 561 R1/4PU 561J 47k 47 x 10 3 473 R1/4PU 473J 0.5 R50 RN2H R50K 1 1R0 RS1P 1R0K Ex.2 When there are 3 effective digits (such as in high precision metal film resistors). 5.62k 562 x 10 1 5621 RN1/4P 5621F ONTRST TLE M-IS21/XJ, LXJ/N and MYXJ are constructed the same except for the following : Ref. No. Mark Symbol and escription Part No. MYXJ type XJ type LXJ/N type Remarks P SSEMLEIES NSP MIN SSY WK7521 WM7513 WM7513 P5-1 F SSY WU7337 WU7338 WU7338 P5-2 MP SSY WU7340 WU7341 WU7341 P5-4 NSP PRIMRY SSY WU7345 WU7346 WU7346 PKING P3-3 Packing ase MP H7747 H7759 H7673 EXTERIOR P5-9 Power Transformer TS7249 TS7247 TS7247 P5-14 Rear Panel N7823 N7843 N7734 arrier Not used K7726 K7726 No.1 NSP Fuse ard Not used X7098 X7098 No.2 Fuse (FU1 ) REK1026 REK1029 REK1029 (FU1 : T2.5) (FU1 : T5) (FU1 : T5) Fuse (FU2, FU3 : T2.5) Not used REK1026 REK1026 No.3 Note : The numbers in the remarks column correspond to the numbers on the exploded diagram. Refer to EXPLE VIEWS EXPLE VIEWS EXTERIOR SETION Screw (FT40P060FZK) No.3 No.2 Power Transformer PRIMRY SSY No.1 2

ONTRST OF P SSEMLIES F F SSY WU7338 and WU7337 are constructed the same except for the following: Mark Symbol and escription WU7337 Part No. WU7338 Remarks L001 TF7019 TF7020 S002 Not used KX7004 T001 TT7050 TT7048 Note : Refer to "2.SHEMTI IGRM" MP SSY WU7341 and WU7340 are constructed the same except for the following: Part No. Mark Symbol and escription WU7340 WU7341 Remarks 3308 KSQY822K50 Not used 3319, 3320 SQH6R050 SQH10050 3327, 3328 SQH680J50 Not used R3307 RS1/10S100J Not used F PRIMRY SSY WU7346 and WU7345 are constructed the same except for the following: Mark Symbol and escription WU7345 Part No. WU7346 Remarks H103- H106 Not used KR7001 S001 Not used KX7006 Note : Refer to "2.SHEMTI IGRM" 3

2. SHEMTI IGRM 2.1 F SSY and PRIMRY SSY F SSY Power Transformer REK1026 (T2.5) REK1026 (T2.5) PRIMRY SSY F (WU7346) REK1029 (T5.0) POWER OR XJ : G1158 LXJ/N : G1154 F F SSY (WU7338) 110-127V/220-230V /240V 50/60Hz 4 F F

ORER NO. RRV2406 STEREO POWER MPLIFIER M-IS21 THIS MNUL IS PPLILE TO THE FOLLOWING MOEL(S) N TYPE(S). Type MMXQ Model M-IS21 220-230V Power Requirement Remarks This product is a component of a system. For the accessories, instruction manuals etc., refer to the service manuals RRV2404 for X-IS21V. This product does not function properly independently; to avoid malfunctions, be sure to connect it to the prescribed system component(s), otherwise damage may result. omponent Model IS-21V Service Manual Remarks STEREO /V TUNER EK X-IS21V RRV2404 (RRV2326) STEREO POWER MPLIFIER M-IS21 RRV2406 (RRV2129) This Service Manual SPEKER SYSTEM S-IS21V RRV2398 This service manual should be used together with the following manual(s): Model No. Order No. Remarks M-IS21/MYXJ RRV2129 PIONEER ORPORTION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan PIONEER ELETRONIS SERVIE, IN. P.O. ox 1760, Long each, 90801-1760, U.S.. PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, elgium PIONEER ELETRONIS SIENTRE PTE. LT. 253 lexandra Road, #04-01, Singapore 159936 PIONEER ORPORTION 2000 T ZZK NOV. 2000 Printed in Japan

ORER NO. RRV2430 STEREO POWER MPLIFIER M-IS21 THIS MNUL IS PPLILE TO THE FOLLOWING MOEL(S) N TYPE(S). Type Model M-IS21 Power Requirement The voltage can be converted by the following method. XR 110-127V/220-230V/240V With the voltage selector This product is a component of a system. For the accessories, instruction manuals etc., refer to the service manuals RRV2428 for X-IS21T. This product does not function properly independently; to avoid malfunctions, be sure to connect it to the prescribed system component(s), otherwise damage may result. omponent Model IS-21T Service Manual Remarks STEREO TUNER EK X-IS21T RRV2428 (RRV2148) STEREO POWER MPLIFIER M-IS21 RRV2430 (RRV2129) This Service Manual SPEKER SYSTEM S-IS21 RRV2427 This service manual should be used together with the following manual(s): Model No. Order No. Remarks M-IS21/MYXJ RRV2129 PIONEER ORPORTION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan PIONEER ELETRONIS SERVIE, IN. P.O. ox 1760, Long each, 90801-1760, U.S.. PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, elgium PIONEER ELETRONIS SIENTRE PTE. LT. 253 lexandra Road, #04-01, Singapore 159936 PIONEER ORPORTION 2001 T ZZK FE. 2001 Printed in Japan

1. ONTRST OF MISELLNEOUS PRTS NOTES: Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List. The mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation. Screws adjacent to mark on product are used for disassembly. Reference Nos. indicate the pages and Nos. in the service manual for the base model. When ordering resistors, first convert resistance values into code form as shown in the following examples. Ex.1 When there are 2 effective digits (any digit apart from 0), such as 560 ohm and 47k ohm (tolerance is shown by J=5%, and K=10%). 560 56 x 10 1 561 R1/4PU 561J 47k 47 x 10 3 473 R1/4PU 473J 0.5 R50 RN2H R50K 1 1R0 RS1P 1R0K Ex.2 When there are 3 effective digits (such as in high precision metal film resistors). 5.62k 562 x 10 1 5621 RN1/4P 5621F ONTRST TLE M-IS21/XR and MYXJ are constructed the same except for the following : Part No. Ref. No. Mark Symbol and escription M-IS21 M-IS21 Remarks /MYXJ /XR P SSEMLIES NSP MIN SSY WK7512 WK7513 P5-1 F SSY WU7337 WU7338 P5-2 MP SSY WU7340 WU7341 P5-4 NSP PRIMRY SSY WU7345 WU7346 PKING SETION P3-3 Packing ase H7747 H7961 EXTERIOR SETION P5-9 Power Transformer (220-230V) TS7249 Not used P5-9 Power Transformer (110-127V/220-230V/240V) Not used TS7247 P5-10 Fuse (FU1 : T2.5) REK1026 Not used P5-10 Fuse (FU1 : T5.0) Not used REK1029 P5-14 Rear Panel N7823 N7988 Fuse (FU2, FU3 : T2.5) Not used REK1026 No. 1 arrier Not used K7726 No. 2 NSP Fuse ard Not used X7098 No. 3 Notes : For P SSEMLIES, Refer to ONTRST OF P SSEMLIES and 2. SHEMTI IGRM. The numbers in the remarks column correspond to the numbers on the EXPLOE VIEWS. 2

EXPLOE VIEWS Screw (FT40P060FZK) No.3 No.1 No.1 Power Transformer PRIMRY SSY No.2 ONTRST OF P SSEMLIES F Mark F SSY WU7338 and WU7337 are constructed the same except for the following : Symbol and escription Part No. WU7337 WU7338 L1 LINE FILTER TF7019 TF7020 S2 VOLTGE SELET SWITH Not used KX7013 T1 STNY TRNSFORMER TT7050 TT7048 Remarks F Mark MP SSY WU7341 and WU7340 are constructed the same except for the following : Symbol and escription Part No. WU7340 WU7341 3308 KSQY822K50 Not used 3319, 3320 SQH6R050 SQH10050 3327, 3328 SQH680J50 Not used R3307 RS1/10S100J Not used Remarks F Mark PRIMRY SSY WU7346 and WU7345 are constructed the same except for the following : Part No. Symbol and escription WU7345 WU7346 H103 H106 FUSE LIP Not used KR7001 S1 VOLTGE SELET SWITH Not used KX7006 Remarks 3

2. SHEMTI IGRM 2.1 F and PRIMRY SSYS Note : When ordering service parts, be sure to refer to "EXPLOE VIEWS and PRTS LIST" or "P PRTS LIST" POWER TRNSFORMER REK1026 (T2.5) REK1026 (T2.5) F PRIMRY SSY (WU7346) REK1029 (T5.0) F F SSY (WU7338) POWER OR G1158 110-127V/220-230V/240V 4 F F