Yamaha A-S2000 Service Manual - Page 52

A B C A-S2000 1 FRONT (1) P.C.B. (Side A) 2 FUNCTION (1) (W3004) CB517 3 RY_DIR RY_BYP EV1_MT EV1_CE EV1_CL EV1_DA MT_M -12RY SW_TRE SW_BAS EV2_CE EV2_CL EV2_DA MG RY_CD RY_TU RY_L1 RY_L2 MT_PRE MT_REC RY_BAL I_BALGAIN RY_UNBAL MG RY_MMMC RY_PHONP I_MMMC D E F FRONT (6) (CB509) LED_MT LED_MDIR LED_PHO LED_BAL LED_L2 LED_L1 LED_TU LED_CD DGND +5C FUNCTION (3) (W1) FUNCTION (1) (W3004) +5M PDET /RES RY_PWR MG 9V +12C DGND -12C PRV RY_SPA RY_SPB PSAV1 PSAV2 MG (Writing port) CB515 CB519 IC504 W5006 +5M MG THMR THML HPPRDR HPPRDL PRIR PRIL PRDR 4 PRDL MAIN (2) (W203) 5 CB521 16 64 1 17 IC502 49 48 32 33 CB507 W5002 16 1 IC501 9 8 CB505 4 31 CB512 CB501 I_CNTR I_LRBAL I_BAS I_TRE MG +5STBY I_MMMC I_MUTE I_ISEL MVOLMVOL+ I_VOL DGND +12C LED_PWR +5M -12C RY_HP I_HP HPTRIM SP_AB REM MG +5M FRONT (9) P.C.B. (Side A) 6 7 52 LED_PWR +5M W5004 • Semiconductor Location Ref no. Location Ref no. Location D5001 G3 Q5012 C3 D5005 G3 Q5017 D3 D5008 I3 Q5018 C3 D5010 D4 Q5021 D3 D5027 B6 Q5024 E3 IC501 E4 Q5025 D3 IC502 C4 Q5029 D3 IC504 E3 Q5030 B5 IC505 E4 Q5032 E3 Q5005 E4 Q5034 D3 Q5010 D3 Q5011 B4 MVOLMVOL+ MG I_VOL +5STBY DGND +12C I_ISEL MG NC I_MUTE +5STBY I_MMMC MG I_CNTR I_LRBAL I_BAS I_TRE MG +5STBY I_MMMC I_MUTE I_ISEL MVOLMVOL+ I_VOL DGND +12C HPR HPG HPL -12C RY_HP I_HP HPTRIM SP_AB REM MG +5M G H I J FRONT (2) P.C.B. (Side A) SPEAKERS BA A+B BI-WIRING OFF TRIM dB +6 0 +12 -6 PHONES JK501 CB504 MAIN (2) (W204) FRONT (3) P.C.B. (Side A) BALANCE TREBLE R L + - CB503 BASS + - W5003A W5005A W5009A W5007A FRONT (5) (W5005B) FRONT (7) (W5009B) FRONT (4) (W5003B) FRONT (8) (W5007B) W5008