Denon AVR-785 Service Manual page 79

SCHEMATIC DIAGRAMS (8/13)
1 2 3
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
C325
100P-J
1 2 3 4 5 6
IC303
BU2090
16 15 14 13 12 11
C304
22N
C305
47/16
SW301C
SW302A SW302B SW302C
EXT.IN DIMMER
(E2 : PTY)
SW303A SW303B SW303C
ANALOG VIDEO SELECT
(E2 : RDS)
SW304A SW304B SW304C
INPUT_MODE TUNING_UP
(N : NONE)
SW305A SW305B SW305C
SPK_A TUNING_DN
(N : NONE)
SW306A SW306B SW306C
STATUS
PRESET_UP
(E2 : RT)
(N : NONE)
SW307B SW307C
PRESET_DN
(N : NONE)
SW308B SW308C
SHIFT
(N : NONE)
SW309B SW309C
BAND
(N : NONE)
4 5
FROM CPU BOARD
21
17 18 19 20
CP301A
ZD301
MTZ6.8B
RMC301
REMOTE
R311
10
Q316
KRA104S
7 8
10 9
TONE_CONTROL
TONE_DEFEAT
SURR_PARA
SURR_MODE
DIRECT/STEREO
5CH_ST.
RED LED RED LED
GREEN LED GREEN LED
KEY_IN1 KEY_IN1
FUNC_UP FUNC_UP
DOLBY/DTS
FUNC_DOWN FUNC_DOWN
ECD_+5V ECD_+5V
CPU_GND CPU_GND
SURROUD BACK H/P_DET
CPU_GND
SPK_B
CPU_GND
H/P_DET
C386
CN303
47N-K
Q319
KRA102S
Q320
KRA102S
6 7
FROM POWER TRANS
1 2 3
CP303
FRONT BOARD
C306
100N(EB)
TUNED STEREO REC PHONO CD
RDS AUTO MULTI VCR -1
CH
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29
Q310
KRA102S
G1
49
G6
50
G5
51
G4
Q311
KRC102S 52
G3
D305
G2 53
KDS160
54
55
56
R315
57
10K
58
59
L302
60
R316 470
1SS133T 10UH
61
D306
R317 470
62
R318 470
63
R319 470
1K
64
R345
C324
100P-J
100 C322
R331 R333 100P-J
47K C321
MASTER VOL 1N-K
ENCODER
R332 R334
100 47K
100
R335 R337
47K
SELECT
ENCODER
R338
100 47K
R336
TO MAIN BOARD
FUNCTION BOARD
PWR_S/W IN
PWR_S/W OUT
100 R343
R341 47K
FUNCTION
ENCODER
TO FUNC BOARD
CN392
100 R344
CPU_GND CPU_GND
R342 47K
CPU_GND CPU_GND
H/P_DET H/P_DET
R396
4K7 H/P_L
GND
MAIN
R392
H/P_R
220 SW343
RED
SW341A FROM MAIN BOARD
ST/BY SW
R397
300
GREEN
LED311
R393 SW342A
270
ZONE
79
8 9 10
TUNER AUX DVD / VDP TV / DBS
-2 -3 V_AUX CDR / TAPE -1 -2
DPL II
DIGITAL
DIGITAL ANALOG
30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
G6 AM32 32
AM32
G5 AM31 31
AM31
G4 AM30 30
AM30
G3 AM29 29
AM29
G2 AM28 28 AM28
G1 IC301 AM27 27 AM27
VFL AM26 26 AM26
LC75721
TEST AM25 25
AM25
VSS AM24 24
AM24
OSC0 AM23 23
AM23
AM18
OSC1 AM22 22
AM22
Q312
VDD AM21 21 AM21
KRA102S
RST AM20 20 AM20
CE AM19 19 AM19
KDS160 D308
CLK AM18 18
Q313
DT 17 17 KRC102S
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
AM17
Q314
KRA102S
KDS160 D309
Q315
KRC102S
V.AUX_V
R382
470
V.AUX_L
MAIN S/W BOARD
R383
470
V.AUX_R
SW344
OPT-IN BOARD
H/P BOARD
CP392
C397
1
OPTICAL IN
2
22N
G301
1/50
3
R394
C396
M470(2)
R395
M470(2)
SCHEMATIC DIAGRAMS (8/13)
FRONT UNIT
(For ALL MODEL)
AVR-1905/785 AVC-1590
AVR-1905/785 AVC-1590
11
A
B
57 58
C
D
E
C381
47/16 TO CPU BOARD
V.AUX_V
V_GND
GND
V.AUX_L
F
GND
V_AUX_R
TO CPU BOARD
G
DSP_GND
FRONT_OPT_IN
DSP_GND
L391
DSP_+5V
4.7UH
H