Denon AVR-1804 Service Manual page 23

Q307
22 20 14 12 10 8 6 4 2
18 16
R355
23 19 17 15 13 11 9 7 5 3 1
R359
SB_MUTE 1
JACK301
R360 TONE_DFT 2
9184_CE 3
4
9184_CLK
9184_DAT 5
RLY_SPK_B 6
+5.6V
PRE_RET_GND 7 -VKK
GND
+15V 8
1-SW_MUTE
GND
-15V 9
2-MUTE_+B H/P_SENSE
FUNC_DW
3-RLY_S_SB
FUNC_UP
4-RLY_S_A
REMOCON
5-RLY_SURR
FL_RST
6-RLY_CNT RLY_PWR
STBY_LED
7-RLY_H/P
FL_DRV_CE
8-RLY_POWER
FL_DRV_DATA
9-CNT_MUTE
R359 FL/2090_CLK
10-FRNT_MUT 2090_DATA
11-SUR_MUT VOL_DW
VOL_UP
12-+5.6V
SEL_DW
JACK301 13-CPU_G
SEL_UP
R360 14-+5V(DSP)
KEY3
15-DSP_G
KEY2
16-PWR_DW KEY1
17-PROTECT
18-VKK
19-MUTE_PWR
R262
1
2
3
4
5
6
7
R225
8
1
10
9
10 R219
11
12
13
20
11
14
Q201
15
R224 R220
16
R202
17
D206
18 R208
19
R205
R378FL R376FL
R379FL R377FL
35 30
25
40
45
LC75721NE
50
10
55
60 5
Q305 Q304
C305
1
C306
R304A
R302A
SCREW 3*17 SCREW 3*17
R351
R350
5 5 5 P C
J324
C247
30
35
25
40
20
45
10
50
5
1
55
60
100
65
95
R267
70 90
75 85
80 81
Q202
J325
SET_OPT
AVC1570
1603RDS
AVR1803
1803RDS
23
Q300 Q301
D305
Q302
20
Q303
D306
15
R301B
8 5 1
9 10 15
25 20
R237
15
TC9482
10
1 5
R245SL
C234 C233
C232
R245C
R215FR
J342 C216
J340
R216FR
C218FL R217FL C213FL
R245SW R216FL
C239
R215FL R214FL
R210FL
J343
R221SW
R223SW
C213
R220SW
C211SW
C248
R217 R219 ARE_OPT R216 R218
10K OPEN E3 10K OPEN
10K 18K
E2,EK 10K 18K
15K 10K N 15K 10K
OPEN 10K E1 OPEN 10K
AVR-1804/884 / AVC-1880
Q203
R310
R302B
R303B
R347
R348
R255 R251
C245
FOIL SIDE
23