Denon AVR-1804 Service Manual page 81

1 2
SCHEMATIC DIAGRAMS (3/11)
CONNECTION B'D
SB_MUTE
TONE_DFT
9184_CE
9184_CLK
9184_DAT
RLY_SPK_B
PRE_RTN_GND R555FR
470
+15V
-15V
R554FR
CN551 100K
R567FR
470K
C555FR
47P-J
-
R551FR C552FR 6
10/35
2K2
7
FL +
IC551
5 8
NJM2068
GND
FR
GND
SL
GND
SR
GND
C
GND
SW
GND
SB
CP556
R551FL C552FL
3 4 NJM2068
+
1
2K2 10/35
2
-
C555FL
47P
R567FL
470K
R551 C551
22K 2.2/50
R553 560K
Q551
KTC3200BL
Q552
KTA1268BL
R570 R565 R559
1K2(1) 1K2(1) 1K2(1) D564
1SS133T
D570C
KDS160
C557
10/35
Q557C
2SA1037KT96
R582C
Q558C
DTC114YK
3K3
MUTE_PWR 19
-VKK 18
PROTECT
17
PWR_DOWN 16
DSP_GND 15
+5V(DSP)
14
CPU_GND 13
+5.6V(CPU) 12
11
SUR_MUTE
FRNT_MUTE 10
CNT_MUTE 9
RLY_POWER 8
RLAY_H/P 7
RLY_CNT 6
RLY_SURR 5
RLY_SPK_A 4
RLY_SPK_SB 3
MUTE_+B 2
SW_MUTE 1
CN552
3 4
RL551
R564FR 470 R562FR
3K3
R560FR
R561FR
510K 33K
C558FR
C556FR C557FR 56N(M)
10/35 R559FR 10N(M)
22K
C561FR Q553T
6N8(M)
DTC114YS
C559FR 22N(M)
R563FR 390
R551T
1K
R552T 1K
IC552
TC9184
R553T 1K
C559FL R563FL
22N(M) 390
C561FL
6N8(M)
C556FL R559FL C557FL C558FL
10/35 22K 10N(M) 56N(M)
R561FL
R560FL 33K
510K
R564FL
470
R563
C558
SB_MUTE 470K
0.1/50
R561
1K
C552
R562
Q556
470K 0.1/50
DTA114ES
SURR_MUTE
R560
1K
Q553 R568 C553
DTA114ES 470K 0.1/50
CENTER_MUTE
R573
1K
Q554
C554
R572
DTA114ES
470K 0.1/50
FRONT_MUTE
R574
1K
Q555
DTA114ES
C551S
47N
R583C
1K
5 6
TO COMP-VIDEO
CP506
3 2 1
FL
470
C501FL R501FL 470 R505M
22/16
R503FL
22K
CP554
C
1 C 1
GND
2 GND 2
3 SR SR
3
GND
4 GND 4
SL
5 SL 5
6 GND GND
6
FR
7 FR 7
GND
8 GND 8
9 FL FL 9
R501M
GND C501FR R501FR 470
10 GND 10
SW
11 SW 11
22/16 470
R503FR
12 GND 12
GND
S/B
13 S/B 13
22K
Q501FR
14 GND GND 14
KTC2874B
CN554
FR
CN509
FRNT_MUTE FRNT_MUTE
CNT_MUTE CNT_MUTE
SURR_MUTE SURR_MUTE
SW MUTE SW MUTE
SUR_B_MUTE SUR_B_MUTE R503M
C501C R501C 470
CN508
22/16 470
R503C
22K
Q501C
KTC2874B
C
SB AMP UNIT
CN502
SURR_B_SIG
C501SL R501SL
GND
SURR_B_MUTE 22/16 1K
R502SL
OVER_PROTECT
100K
GND Q501SL
GND KTC2874B
+15V
PRE -B SL
MAIN_B+
MAIN_B+ MAIN_B+
MAIN_B- MAIN_B-
MAIN_B-
C501SR R501SR
22/16 1K
R503SR
R502SR
100K
Q501SR
1 -VKK KTC2874B
2 RLY_SPK_A
3 RLY_SPK_SB
SR
4 PROTECT
C501M
5 LIMIT
10/35
6 RELAY_H/P
7 RLY_CNT
8 RLY_SURR
9 PWR_DOWN
10 RLY_POWER
11 +5.6V(CPU)
12 CPU_GND
13 GND
14 GND
15 -15V
16 +15V
17 DSP_GND
18 +5V(DSP)
19 RLY_SPK_B
20 MUTE_+B
CN553
AVR-1804/884 / AVC-1880
7
PRE AMP B'D
R512FL R513FL 470K
10K C503FL
C505FL
220P-(500V)
33P-(500V)
R504FL Q502FL
R506FL
KSA992F
C502FL 220 36K
10/35
C506FL
C504FL Q503FL
100/10 R508FL
KSA992F
220P R505FL 47K
Q501FL
KTC2874B
33K R507FL 1K8
Q504FL
KSC1845F
C507FL
2N2(M)
R512FR 10K
R513FR
C503FR
C505FR
220P-(500V) 470K
33P-(500V)
Q502FR Q503FR R506FR
R504FR
C502FR 36K
10/35 220
C506FR
KSA992F KSA992F
100/10
C504FR R505FR
220P 33K R507FR 1K8 R508FR
47K
Q504FR
KSC1845F
C507FR
2N2(M)
R512C
10K
C505C
R513C
33P-(500V)
C503C 470K
220P-(500V)
Q503C
R506C
KSA992F
R504C
C502C 36K
10/35
220
C506C
Q502C
100/10
KSA992F
C504C R505C
220P 33K R507C 1K8 R508C
47K
Q504C
KTC1845F
C507C
2N2(M)
R510C R511C
470 47(1/4)
R512SL
R513SL
10K 470K
C505SL
C503SL
33P-(500V)
220P-(500V)
R506SL
C502SL R504SL 36K
10/35
220
R503SL C506SL
Q502SL
Q503SL 100/10
KSA992F
C504SL R505SL KSA992F
22K
220P 33K R507SL 1K8 R508SL
47K
Q504SL
KSC1845F
C507SL
2N2(M)
R510SL R511SL
470 47(1/4)
R512SR R513SR
470K
C503SR
220P-(500V)
10K C505SR
Q503SR 33P-(500V)
KSA992F R506SR
C502SR
R504SR 36K
10/35 220
Q502SR
KSA992F
C506SR
C504SR R505SR R507SR
100/10
22K
220P 33K
R508SR
1K8
47K
Q504SR
KSC1845F
C507SR
2N2(M)
R510SR R511SR
470
47(1/4)
SCHEMATIC DIAGRAMS (3/11)
CNT UNIT
PRE AMP UNIT
REC SIGNAL LINE
81
8
A
F/L
F/L
G
NF4
NF4
CN504
B
NF2
NF2
G
FR
FR
+15V
CN505
NF3
NF3
G
C
C C
CN501
CN503
1 SL
2 SL
3 GND
4 GND
5 NF4
6 NF4
7 GND
8 PRE_-B
9 PRE_-B
10 OVER PROT
11 GND
12
GND
13 -B
-B
14
15
+B
16 +B
D
NF5
NF5
G
SR
SR
CN507
E
81