Denon AVR-1604 Service Manual page 66

1 2
SCHEMATIC DIAGRAMS (3/8)
CNT BOARD
SB
GND
SL
GND
SR
GND
FL
GND
FR
GND
C
GND
+15V
-15V
C551
2.2/50
R553
560K
Q551
KTC3200BL
R570 R559 R565 D565
1K2(1) 1K2(1) 1K2(1) 1SS133T
D563 D562
1N4007 1N4007
MUTE_+5V
+15V
-15V
GND
RLY_SURR-SB
RLY_SPK_B
RLY_SPK_A
RLY_SURR
RLY_CNT
H/P_MUTE
RLY_POWER
SURR_SB_MUTE
CNT_MUTE
FRONT_MUTE
SURR_MUTE
CPU_+5.6V
CPU_GND
PWR_DOWN
PROTECT
C551S
-VKK
47N
GND
GND
+24V
DSP_GND
DSP_+5V
PRE_-B
MAIN_-B
R512SB
MAIN_-B
10K C503SB
MAIN_+B
SB
MAIN_+B
220P-500V
GND
R501SB C502SB R504SB
GND
1K 10/50 220
+15V
DC-PROTECT
R503SB C504SB R505SB
OVER-PROTECT
22K 220P 33K
SURR-SB-MUTE
GND
SB
R509SB
1K2(1/4)
R510SB C507SB
SB-AMP BOARD
470 2N2(EB)
3 4
SB
GND
SL
GND
SR
GND
FL
GND
FR
GND
C
GND
SUR-MUTE
CNT-MUTE
FRONT-MUTE
SURR-SB-MUTE
TO PRE-AMP BOARD
Q556
DTA114ES
R561
1K
Q553
DTA114ES
R560
1K
Q554
DTA114ES
R573
1K
Q555
DTA114ES
R574
1K
TO MAIN BOARD
+24V
GND
GND
-VKK
RLY_SPK_A
RLY_SPK_B
PROTECT
LIMIT
RLY_H/P
RLY_CNT
RLY_SURR
RLY_SURR-B
PWR_DOWN
RLY_POWER
CPU_+5.6V
CPU_GND
GND
GND
-15V
+15V
DSP_GND
DSP_GND
DSP_+5V
DSP_+5V
MUTE_+B
R104SB C103SB Q101SB
5K6(1) 100P-500V 2SD2390
R513SB
470K
R105SB R112SB
5K6(1) 10K
C505SB
33P-500V VR106 R103SB
VR1K(B) 3K
R506SB
33K
R508SB
Q103SB
R507SB 47K 2SC947F
1K8
Q504SB
KSC1845F
Q102SB
C104SB
2SB1560
100P-500V
R117SB
22K
5 6
PRE-AMP BOARD
FL
C501FL R501FL
22/16 1K
SL
C501SL R501SL
22/16 1K
SB
GND
SL
GND
SR
GND
FL
GND
C
FR
GND
C501C R501C
C
22/16 1K
GND
SUR-MUTE
CNT-MUTE
FRONT-MUTE
SURR-SB-MUTE
SR
C501SR R501SR
22/16 1K
PRE_-B
MAIN_-B
MAIN_-B
MAIN_+B
MAIN_+B
GND
GND
+15V
FR
DC-PROTECT
OVER-PROTECT
C501FR R501FR
SURR-SB-MUTE
22/16 1K
GND
SB
R115SB
2K2
C501M
L101SB
SURR-B
1mH
10/35
SURR-B
SURR-B
R118SB
10(1)
AVR-1604/684 / AVC-1580
7
R513FL
R512FL 470K
10K
C503FL C505FL
220P-500V 33P-500V
R506FL
C502FL R504FL 33K
NF4
NF4
10/50 220
GND
R503FL 220P R505FL R508FL
F/L
F/L
22K C504FL 33K R507FL 47K
1K8
R509FL
1K2(1/4)
R510FL C507FL
470 2N2(EB)
R513SL
R512SL 470K
10K
C503SL C505SL
220P-500V 33P-500V
R506SL
SL
C502SL R504SL 33K
SL
10/50 220
GND
GND
R503SL C504SL R505SL R508SL
NF1
22K 220P 33K R507SL 47K
NF1
1K8
GND
-B
R509SL
-B
1K2(1/4)
R510SL C507SL
470 2N2(EB)
R513C
R512C 470K
10K
C503C C505C
220P-500V 33P-500V
R506C
C502C R504C 33K
NF3
NF3
10/50 220
GND
R503C C504C R505C R508C
C
C
22K 220P 33K R507C 47K
1K8
R509C
1K2(1/4)
R510C C507C
470 2N2(EB)
R513SR
R512SR 470K
10K
OVER
C503SR C505SR
PROTECT
DC
220P-500V 33P-500V
PROTECT
R506SR
C502SR R504SR 33K
NF2
NF2
10/50 220
GND
R503SR C504SR R505SR R508SR
SR
SR
22K 220P 33K R507SR 47K
1K8
R509SR
1K2(1/4)
R510SR C507SR
470 2N2(EB)
R513FR
R512FR 470K
10K
C503FR C505FR
220P-500V 33P-500V
R506FR
C502FR R504FR 33K
NF5
NF5
10/50 220
GND
R503FR C504FR R505FR R508FR
FR
FR
22K 220P 33K R507FR 47K
1K8
+15V
MAIN_+B
MAIN_+B
R509FR
1K2(1/4)
MAIN_-B
MAIN_-B
R510FR C507FR
470 2N2(EB)
SCHEMATIC DIAGRAMS (3/8)
CNT UNIT
PRE AMP UNIT
SB AMP UNIT
SIGNAL LINE
66
8
A
B
C
D
E
66