Accuphase E-550 - POWER AMP ASSY (717-0087-00); Power Amp Assembly Schematic Diagram

1A 2A
3A 4A 5A
SPEAKER
S1A
336-4817-00
5B 1B
2B 3B 4B
S1B
336-4817-00
1A 2A
3A 4A 5A
RECODER
S3A
336-4817-00
5B 1B
2B 3B 4B
S3B
336-4817-00
/RET0 /RET1 /RET2 /RET0 /RET1 /RET2 /RET3 /RET0 /RET1 /RET2 /RET0 /RET1 /RET2 /RET3
1A 2A
3A 4A 5A
COPY
S2A
336-3903-00
5B
2B 3B 4B 1B
S2B
336-3903-00
/RET0 /RET1 /RET2 /RET0 /RET1 /RET2
/SCAN0 /SCAN1
/SCAN2 /SCAN3 /SCAN4
3A1A
2A
4A
10k
BASS
VR1A
575-2406-10
3B1B
2B
4B
10k
VR1B
575-2406-10
LGND RGND
Min_L Max_L VRB_L Min_R Max_R VRB_R
3A1A
2A
4A
10k
TREBLE
VR2A
575-2406-10
3B1B
2B
4B
10k
VR2B
575-2406-10
LGND RGND
Min_L Max_L VRT_L Min_R Max_R VRT_R
Q2
2SK2541_
Q1
2SK2541_
3A
2A
1A
10k
BALANCE
VR3A
575-2313-00
3B
2B
1B
10kVR3B
575-2313-00
10k
R3
10k
R1
47k
R2
VCC VCC VCC
/ADCPOL BALCNTS
1 2 3 4 5 6
K2
280-9006-00
1 2 3 4 5 6
K3
280-9006-00
/RET0 /RET1 /RET2 /RET3
/ADCPOL /RET0 /RET1 /RET2 /RET3 /SCAN0 /SCAN1 /SCAN2 /SCAN3 /SCAN4 BALCNTS
VCC
Min_L Max_L VRB_L Min_R Max_R VRB_R
LGND RGND
VRT_L VRT_R
G
1 2
3 4
MM/MC
S5
354-1111-00
G
1 2
3 4
MONO
S7
354-1111-00
G
1 2
3 4
COMP
S9
354-1111-00
G
1 2
3 4
EXTPRE
S4
354-1111-00
G
1 2
3 4
METER
S6
354-1111-00
G
1 2
3 4
TONE
S8
354-1111-00
TM1
314-0539-04
TM2
314-0539-04
TM3
314-0539-04
TM4
314-0539-04
TM5
314-0539-04
TM6
314-0539-04
/SCAN0' /SCAN1' /RET0' /RET1' /RET2' /RET3'
/SCAN1'/SCAN0' /RET1' /RET2' /RET3'
/RET1' /RET2' /RET3'
/RET0'
1 2 3 4 5 6 7 8 9
10 11 12 13
K1
307-1306-00
1 2 3 4 5 6 7 8 9
10
K4
308-1010-00
/RET3
to from Logic (K3)
from Mother (K17) from Mother (K18)
to Headphone (K1)
1 2
K5
309-2273-04
S W I T C H A S S ' Y ( 7 1 6 - 0 7 3 0 - 0 0 )
-
2
7
-
1A
1B
2A
2B
3A
3B
4A
4B
5A
5B
6A
6B
7A
7B
8A
8B
9A
9B
10A
10B
11A
11B
12A
12B
13A
13B
14A
14B
15A
15B
16A
16B
K2
307-3204-00
1A 1B 2A 2B 3A 3B 4A 4B 5A 5B 6A 6B 7A 7B 8A 8B 9A 9B 10A 10B 11A 11B 12A 12B 13A 13B 14A 14B 15A 15B 16A 16B
K3
307-3204-00
ST2 ST0 ST3 ST1 NC NC LOUT2 LOUT2 AGND AGND ROUT2 ROUT2 +15VA +15VA AGND AGND -15VA -15VA DGND NC +12V NC +5V +5V NC CNT2 NC DGND +12V NC
ST2 ST0 ST3 ST1 NC NC
LOUT1 LOUT1
AGND AGND
ROUT1 ROUT1
+15VA
+15VA
AGND AGND
-15VA -15VA
MC/MM
DGND
NC
+12V
NC
+5V +5V
NC
CNT2
NC
DGND +12V
NC
1 2 3 4 5
10 9 8 7 6
RELAY1
362-1202-00
1 2 3 4 5
10 9 8 7 6
RELAY2
362-1202-00
-15VA
GNDA
+15VA
+5VA
/OP2
+12VD
DGND
/OP1
GNDA
GNDA
SrcL
SrcR
D2 MA165
D4 MA165
D1
RD5.1EB1
D6
RD5.1EB1
D5
11EQS10
OPTION1
OPTION2
MC/MM
MC/MM MC/MM
MC/MM
100k
R2
100k
R1
to Mother K15
X1
RN1204
X2
RN1204
D3
MA165
D7
MA165
1
2
3
4
5
6
7
8
9
10
11
12
13
14
K1
308-1402-00
/AD_OP
to IO Relay K1
10 R3 10 R5
10 R4 10 R6
C O N N E C T O R B O A R D A S S ' Y
( 7 1 6 - 0 7 3 5 - 0 0 )
D1
BR1111R-B/C/D/E
LED_1
/LED_A
D2
BR1111R-B/C/D/E
LED_2
/LED_A
D3
BR1111R-B/C/D/E
LED_3 /LED_A
D4
BR1111R-B/C/D/E
LED_4 /LED_A
D5
BR1111R-B/C/D/E
LED_4 /LED_B
D7
BR1111R-B/C/D/E
LED_3
/LED_B
D8
BR1111R-B/C/D/E
LED_2
/LED_B
D6
BR1111R-B/C/D/E
LED_1
/LED_B
LINE2
LINE1
LINE-BAL CD-BAL
560R4
560R1
560R3
560R2
CD
TUNER
OP1
OP2
/LED_B
/LED_A
LED_4
LED_1
LED_3
LED_2
to Lamp K1
1
2
3
4
5
6
K1
309-2671-04
( 7 2 3 - 0 1 1 8 - 0 0 )
S E L E C T O R L E D A S S ' Y
LED_LOGO
62
R1
G
4
G
2
O
1
G
5
V
3
IC1
NJL62H380A
47
R2
47u 6.3V
C1
VCC
/RCON
VCC
D1
SDPW3DG0B0-J
from Meter Lamp (K4)
-GR
Q1
2SC2458_
VCC
1k
R3
1.8k
R4
1 2 3 4
K1
308-0407-00
R E C E I V E R A S S ' Y
( 7 2 1 - 0 0 8 2 - 0 0 )