Service Manual
Page 29
...1898;Ҽ 08ʢ7ʣ 13*-ʢ'30/5 1 13*3ʢ'30/5 1 13*-ʢ."*/1 DIʣ 13*3ʢ."*/1 3DIʣ A-S2000 • TMP protection L/Rch Cause : Abnormal temperature of heat sink Normal value : 0.200 to 1.550V Detection port : THML (FRONT P.C.B. ... P.C.B. 47 pin of microprocessor IC502) Detected at : PSVA1 (CB24 and CB26 of power transformer) PSVA2 (±B1, ±B2, ±B3 and ±B4 of MAIN P.C.B.) • Amplifier DC voltage protection L/Rch Cause : Abnormal DC voltage of ampli- G Details of Protection ...
...1898;Ҽ 08ʢ7ʣ 13*-ʢ'30/5 1 13*3ʢ'30/5 1 13*-ʢ."*/1 DIʣ 13*3ʢ."*/1 3DIʣ A-S2000 • TMP protection L/Rch Cause : Abnormal temperature of heat sink Normal value : 0.200 to 1.550V Detection port : THML (FRONT P.C.B. ... P.C.B. 47 pin of microprocessor IC502) Detected at : PSVA1 (CB24 and CB26 of power transformer) PSVA2 (±B1, ±B2, ±B3 and ±B4 of MAIN P.C.B.) • Amplifier DC voltage protection L/Rch Cause : Abnormal DC voltage of ampli- G Details of Protection ...
Service Manual
Page 37
...LED_PWR REM IC501 PDET PRV L CH +B4/-B4 HPTRIM 14 SP_AB 15 3,4 9-11 SUB-TRANSFORMER T1 D304 D336 for COLD 6 (for POWER AMP / VOLTAGE AMP STAGE) R CH +...PSVA1 PSVA2 +12V to POWER AMP. COLD(-) RY401 IC413 IC302 IC303 RY403 FLOATING BALANCED POWER AMPLIFIER FRONT • See page 64-66 → SCHEMATIC DIAGRAM SPEAKER DRIVER HOT (POSITIVE ... B L/R CH RY202/R112 RY_SPA RY_SPB SPEAKERS L/R CH + A - + B - A B C D E F G H I J A-S2000 1 I BLOCK DIAGRAM BALANCE • See page 59 → SCHEMATIC DIAGRAM CD BAL L/R HOT (POSITIVE PHASE) BUFFER AMP. SPEAKER DRIVER COLD ...
...LED_PWR REM IC501 PDET PRV L CH +B4/-B4 HPTRIM 14 SP_AB 15 3,4 9-11 SUB-TRANSFORMER T1 D304 D336 for COLD 6 (for POWER AMP / VOLTAGE AMP STAGE) R CH +...PSVA1 PSVA2 +12V to POWER AMP. COLD(-) RY401 IC413 IC302 IC303 RY403 FLOATING BALANCED POWER AMPLIFIER FRONT • See page 64-66 → SCHEMATIC DIAGRAM SPEAKER DRIVER HOT (POSITIVE ... B L/R CH RY202/R112 RY_SPA RY_SPB SPEAKERS L/R CH + A - + B - A B C D E F G H I J A-S2000 1 I BLOCK DIAGRAM BALANCE • See page 59 → SCHEMATIC DIAGRAM CD BAL L/R HOT (POSITIVE PHASE) BUFFER AMP. SPEAKER DRIVER COLD ...
Service Manual
Page 50
... (1) (CB52) PRV +33V AGND -33V 60GND FRONT (11) (CB34) Vioret White Vioret Blue Brown Black Red POWER TRANSFORMER POWER TRANSFORMER • Semiconductor Location Ref no . A B A-S2000 1 MAIN (3) P.C.B. (Side A) 2 3 POWER TRANSFORMER Blue Brown Black Red RED Black RED 4 POWER TRANSFORMER 5 HP GND HP GND HP GND MAIN (2) (CB52) 6 7 50 W316 W314 W315 W318 C D E F G H I J Safety measures •...
... (1) (CB52) PRV +33V AGND -33V 60GND FRONT (11) (CB34) Vioret White Vioret Blue Brown Black Red POWER TRANSFORMER POWER TRANSFORMER • Semiconductor Location Ref no . A B A-S2000 1 MAIN (3) P.C.B. (Side A) 2 3 POWER TRANSFORMER Blue Brown Black Red RED Black RED 4 POWER TRANSFORMER 5 HP GND HP GND HP GND MAIN (2) (CB52) 6 7 50 W316 W314 W315 W318 C D E F G H I J Safety measures •...
Service Manual
Page 62
...C D E F A-S2000 1 FUNCTION 3/3 2 5.0 5.0 16.6 8.3 5.0 0 0 5.1 4.9 0 16.6 16.6 8.4 16.6 16.6 0 0 3 0 0 0 0.9 16.6 0 0 0 10.1 8.9 9.5 9.8 8.1 26.4 4 8.9 8.9 9.5 26.4 8.9 0.1 0.1 8.9 9.5 8.9 8.9 8.9 8.4 26.4 0 8.4 0.8 8.9 0 W1 0 5 Page 64 B4 to FRONT (1)_CB501 G H I Page 66 B4 to FRONT (14)_W8A, W8B (R, L models) 2P 600mm To POWER TRANSFORMER (U, C, T, K, A,... to MAIN (3)_W317 IC51 19.6 12.2 19.6 0 0 1.3 -19.4 19.4 7 0 AC29.8 CB23 To POWER TRANSFORMER 8 0 -12.0 -19.6 0 -12.0 IC52 9 10 # All voltages are measured with a 10MΩ/V DC...
...C D E F A-S2000 1 FUNCTION 3/3 2 5.0 5.0 16.6 8.3 5.0 0 0 5.1 4.9 0 16.6 16.6 8.4 16.6 16.6 0 0 3 0 0 0 0.9 16.6 0 0 0 10.1 8.9 9.5 9.8 8.1 26.4 4 8.9 8.9 9.5 26.4 8.9 0.1 0.1 8.9 9.5 8.9 8.9 8.9 8.4 26.4 0 8.4 0.8 8.9 0 W1 0 5 Page 64 B4 to FRONT (1)_CB501 G H I Page 66 B4 to FRONT (14)_W8A, W8B (R, L models) 2P 600mm To POWER TRANSFORMER (U, C, T, K, A,... to MAIN (3)_W317 IC51 19.6 12.2 19.6 0 0 1.3 -19.4 19.4 7 0 AC29.8 CB23 To POWER TRANSFORMER 8 0 -12.0 -19.6 0 -12.0 IC52 9 10 # All voltages are measured with a 10MΩ/V DC...
Service Manual
Page 63
...-45.0 -45.6 -1.0 -45.0 -45.5 -21.8 -39.8 -45.0 -57.2 9 MAIN (2) K L M N A-S2000 To POWER TRANSFORMER To POWER TRANSFORMER CB24 W317 W103 CB21 AC89.5 -61.0 61.1 CB22 AC48.5 W104 -32.2 32.2 To POWER TRANSFORMER AC38.5 AC38.5 AC38.5 CB26 W314 C5 to MAIN (1)_CB52 W315 C9 to MAIN (2)_CB72 W318 K8... to MAIN (2)_CB73 W316 Page 66 B3 to FRONT (11)_CB34 Page 62 C6 to FUNCTION (3)_CB25 To POWER TRANSFORMER AC38.5 DC51.4 W303C W303D DC51.4 W303B W303A 5 k-ohms 10 W 5 k-ohms 10 W -23.8 -23.8 24.6 -10.8 -15.5 0 -15.5 IC3004.4 0 4.6 -15.6 ...
...-45.0 -45.6 -1.0 -45.0 -45.5 -21.8 -39.8 -45.0 -57.2 9 MAIN (2) K L M N A-S2000 To POWER TRANSFORMER To POWER TRANSFORMER CB24 W317 W103 CB21 AC89.5 -61.0 61.1 CB22 AC48.5 W104 -32.2 32.2 To POWER TRANSFORMER AC38.5 AC38.5 AC38.5 CB26 W314 C5 to MAIN (1)_CB52 W315 C9 to MAIN (2)_CB72 W318 K8... to MAIN (2)_CB73 W316 Page 66 B3 to FRONT (11)_CB34 Page 62 C6 to FUNCTION (3)_CB25 To POWER TRANSFORMER AC38.5 DC51.4 W303C W303D DC51.4 W303B W303A 5 k-ohms 10 W 5 k-ohms 10 W -23.8 -23.8 24.6 -10.8 -15.5 0 -15.5 IC3004.4 0 4.6 -15.6 ...
Service Manual
Page 66
A B C D E F G H I J K L M N A-S2000 1 FRONT 3/3 2 CB34 Page 63 M2 3 to MAIN (3)_W316 31.9 31.9 29.5 29.2 29.7 29.7 29.7 29.7 29.7 29.7 29.2 29.2 29.2 29.2 29.2 29.5 21.1 ... FUNCTION (2)_CB404 Page 63 E3 to MAIN (1)_CB64 W101B W101A FRONT (11) CB79 Page 62 H8 to FUNCTION (3)_W4 W12A 8 W12B W12C W12D To POWER TRANSFORMER 8P 9 620mm Page 62 G2 to FUNCTION (3)_CB2 # All voltages are measured with a 10MΩ/V DC electronic voltmeter. # Components having special characteristics are marked s and...
A B C D E F G H I J K L M N A-S2000 1 FRONT 3/3 2 CB34 Page 63 M2 3 to MAIN (3)_W316 31.9 31.9 29.5 29.2 29.7 29.7 29.7 29.7 29.7 29.7 29.2 29.2 29.2 29.2 29.2 29.5 21.1 ... FUNCTION (2)_CB404 Page 63 E3 to MAIN (1)_CB64 W101B W101A FRONT (11) CB79 Page 62 H8 to FUNCTION (3)_W4 W12A 8 W12B W12C W12D To POWER TRANSFORMER 8P 9 620mm Page 62 G2 to FUNCTION (3)_CB2 # All voltages are measured with a 10MΩ/V DC electronic voltmeter. # Components having special characteristics are marked s and...
Service Manual
Page 67
... THERMISTOR TR.CHP : CHIP TRANSISTOR TR.DGT : DIGITAL TRANSISTOR TR.DGT.CHP : CHIP DIGITAL TRANSISTOR TRANS : TRANSFORMER TRANS.PULS : PULSE TRANSFORMER TRANS.PWR : POWER TRANSFORMER ASS'Y TUNER.AM : TUNER PACK,AM TUNER.FM : TUNER PACK,FM TUNER.PK : FRONT-ENDTUNER PACK VR... : ROTARY POTENTIOMETER VR.MTR : POTENTIOMETER WITH MOTOR VR.SW : POTENTIOMETER WITH ROTARY SW VR.SLIDE : SLIDE POTENTIOMETER VR.TRIM : TRIMMER POTENTIOMETER 67 A-S2000...
... THERMISTOR TR.CHP : CHIP TRANSISTOR TR.DGT : DIGITAL TRANSISTOR TR.DGT.CHP : CHIP DIGITAL TRANSISTOR TRANS : TRANSFORMER TRANS.PULS : PULSE TRANSFORMER TRANS.PWR : POWER TRANSFORMER ASS'Y TUNER.AM : TUNER PACK,AM TUNER.FM : TUNER PACK,FM TUNER.PK : FRONT-ENDTUNER PACK VR... : ROTARY POTENTIOMETER VR.MTR : POTENTIOMETER WITH MOTOR VR.SW : POTENTIOMETER WITH ROTARY SW VR.SLIDE : SLIDE POTENTIOMETER VR.TRIM : TRIMMER POTENTIOMETER 67 A-S2000...