Denon AVR-1905 Service Manual

79
AVR-1905/785 AVC-1590
SCHEMATIC DIAGRAMS (8/13)
FRONT UNIT
(For ALL MODEL)
SCHEMATIC DIAGRAMS (8/13)
1234567891011
A
B
C
D
E
F
G
H
AVR-1905/785 AVC-1590
AM1 AM2 AM4 AM5 AM7 AM8
AM2 AM3 AM5 AM6 AM8 AM9 AM11 AM12 AM14 AM15 AM17 AM18 AM20 AM21 AM22 AM23 AM25 AM26 AM28 AM29 AM31 AM32 AM34 AM35 AA2 AA3 G15 G14 G12 G11 G9 G8 G7 G6 G4 G3 G1
470R314
RP0356K RP0656K RP0956K RP1256K RP1556K
G7 G8 G10 G11 G13 G14
AM10
RP2956K
G16
AM11 AA3 AM13
RP3256K
AA1
AM14 AM35 AM16
RP3556K
AM33
RP3856K RG1456K
G1
G3
G4
G6
G301
AM3 AM6 AM9
AM20
AM21
AM23
AM24
AM26
AM27
AM29
AM30
AM32
AM18
SW305A
R305A
3K3
SW306A
SW304A
R303A
1K8
SW302A
R302A
1K5
R308B
12K
R306B
4K7
R305B
3K3
R303B
1K8
R302B
1K5
C304
22N
R327
680
47K
R339
R308C
12K
R306C
4K7
R305C
3K3
R303C
1K8
R302C
1K5 R321
680
C386
47N-K
R326
680
R324
680
R328
680
R311
10
C303
47/16
ZD301
MTZ6.8B
R322
680
R329
680
R397
300
R393
270
R392
220
ZD342
MTZ5.1B
ZD335
MTZ5.1B
ZD332
MTZ5.1B
ZD331
MTZ5.1B
R340
3K3
L302
10UH
C307
1/50
AM1
R346A
12K
R344
47K
R343
47K
R338
47K
47K
R337
R312
10K
AM7 AM4 AM10 AM13
C321
1N-K
C324
100P-J
KDS160
D305
AM19 AM16
CN931
G2
G5
AM27 AM24
R394
M470(2)
M470(2)
R395
AM30 AM33
JK301
AA1 G16
AM19
AM22
AM25
AM28
AM31
G13 G10
C387
100N-Z
C388
100N-Z
AM17
G5
4K7
R391
C382
100P-J
C309
47N(EB)
G2
4.7UH
L391
C310
1/50
R301A
1K2
R304A
2K4
SW303A
R307B
7K5
R304B
2K4
R301B
1K2
47/16
C305
470R313
R307C
7K5
R304C
2K4
R301C
1K2
LED301
HL50RDRF4T
C301
10/50
100UH
L301
LED306
HL50RDRF4T
RMC301
REMOTE
321
CN303
LED304
HL50RDRF4T
LED308
HL50RDRF4T
D302
1SS133T
D303
1SS133T 1SS133T
D304
ZD341
MTZ5.1B
ZD336
MTZ5.1B
LED311
C313
47N(EB)
RP0256K RP0156K
R345A
7K5
R334
47K
47K
R333
RP0756K RP0556K RP0456K RP0856K
321
CN392
30P-J
C311
RP1056K RP1156K RP1356K RP1456K
10K
R315
C322
100P-J
RP2056K RP1956K RP1856K RP1756K RP1656K
321
CN393
RP2256K RP2356K RP2456K RP2556K RP2656K
G9 G12
1N
C395
C396
1/50
C397
22N
AM12
RP3056K RP3156K
AA2 G15
AM15
RG1656K RP3756K RP3656K
AM34
RG1356K RG1256K RG1156K RG1056K
1
2
3
IC391
RG0756K RG0656K RG0556K RG0456K RG0856K
47/16
C393
47/16
C381
C383
100P-J
RG0256K RG0156K
4321
CN202
654321
CN201
3456712
CN302
87654321
CP302
Q310
KRA102S
SW308B SW308C
SW309B SW309C
SW307B SW307C
SW306B SW306C
SW305CSW305B
SW304CSW304B
SW302B SW302C
SW301C
R323
680
C325
100P-J
R330
680
R325
680
C302
47N-K
SW342A
SW343
C342
10N
R342
100
R341
100
R336
100
R335
100
C335
10N
VEC301
C331
10N
C332
10N
R345
1K
D306
1SS133T
C308
47N(EB)
321
CP303
SW344
C391
22P-J
R383
470
1/50
C385
1/50
C384
KDS160D309
Q315
KRC102S
Q312
KRA102S
R384
2M2
SW303B SW303C
LED303
HL50RDRF4T
LED307
HL50RDRF4T
VDD Q11 Q10 Q9 Q8 Q7 Q6 Q5 Q4
Q3 Q2 Q1 Q0
CLK
DATA
VSS
12345678
910111213141516
IC303
BU2090
LED302
HL50RDRF4T
LED310
HL50RDRF4T
KRC107S
Q322
LED309
HL50RDRF4T
LED305
HL50RDRF4T
R396
4K7
C341
10N
VEC303
SW341A
VEC302
R332
100
C336
10N
C312
47/16
R331
100
C306
100N(EB)
321
CP392
C394
1N
RP2156K RP2756K RP2856K
C392
100N-Z
R381
75
R382
470
KDS160D308
Q314
KRA102S
Q313
KRC102S
RP3456K RP3356K RG0956K RG1556K RG0356K
R385
2M2
R318 470
Q320
KRA102S
Q319
KRA102S
R319 470
R316 470
R317 470
KRA104S
Q316
2019181716151413121110987654321
CP301A
Q311
KRC102S
2SA933S
Q321
17
33
AM35
G16 G15 G14 G13 G12 G11 G10
G9 G8 G7
AA3 AA2 AA1
AM34
AM32
AM31
AM30
AM29
AM28
AM27
AM26
AM25
AM24
AM23
AM22
AM21
AM20
AM19
AM18
AM16 AM15 AM14 AM13 AM12 AM11 AM10 AM9 AM8 AM7 AM6 AM5 AM4 AM3 AM2 AM1
DT
CLK
CE
RST
VDD
OSC1
OSC0
VSS
TEST
VFL
G1
G2
G3
G4
G5
G6
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16151413121110987654321
IC301
LC75721
DPL II
CDR
DIGITAL
-2-1TAPE
VDP
/
/DVD
V_AUX
AUX
-3-2
TUNER
-1
CD
VCR
PHONO
MULTI
REC
AUTO
STEREO
RDS
TUNED
CH
1 2 3 4 5 6 7 8 9 1011121314151617181920212223242526272829 303132333435363738394041424344454647484950515253545556 5758
TV / DBS
DIGITAL ANALOG
ZONE
D.DIGITAL
PCM-IN SPK_B
DTS-IN SPK_A
RED
KEY_IN3
SEL_DOWN VOL_UP 2090_DATA FL_DRV_CE H/P_DET CPU_GND -VKK
OUTPUT SB
OPEN
(E2 : RT)
SPK_A
ANALOG
21
AAC
FUNCTION
SELECT
MASTER VOL
ENCODER
GND
GND
V_GND
STATUS
EXT.IN
SPK_B
DTS-S
AUTO-IN
RED LED
KEY_IN1
(N ONLY)
FIL1 FIL2
ENCODER
ENCODER
H/P_L
V.AUX_R
V.AUX_L
V.AUX_V
V.AUX_V
GND
V.AUX_L
KEY_IN1 KEY_IN2 SEL_UP VOL_DOWN FL_DRV/2090_CLK FL_DRV_DATA REMOCON FUNC_DOWN FUNC_UP FL_DRV_RST CPU_GND CPU_+5.6V
TO FUNCTION BOARD
FROM FRONT BOARD
OPTICAL IN
(N : NONE)
SHIFT SURROUD BACK
(N : NONE)
PRESET_UP 5CH_ST.
TUNING_DN DIRECT/STEREO
(N : NONE)
SURR_PARAVIDEO SELECT
(E2 : PTY)
CPU_GND
H/P_DET
FUNC_DOWN FUNC_DOWN
GREEN LED GREEN LED
ZONE
GREEN
H/P_DET H/P_DET
PWR_S/W OUT
DSP_+5V
DSP_GND
TO CPU BOARD
INPUT_MODE
(N : NONE)
BAND
PRESET_DN
(N : NONE)
DOLBY/DTS
(N : NONE)
TUNING_UP SURR_MODE
(E2 : RDS)
DIMMER TONE_DEFEAT
TONE_CONTROL
H/P_DET
CPU_GND CPU_GND
CPU_GND
FUNC_UP
RED LED
KEY_IN1
FUNC_UP
ST/BY SW
MAIN
FROM POWER TRANS
H/P_R
CPU_GND
CPU_GND CPU_GND
CPU_GND
TO FUNC BOARD
PWR_S/W IN
TO MAIN BOARD
DSP_GND
TO CPU BOARD
V_AUX_R
ECD_+5V ECD_+5V
FUNCTION BOARD
FROM MAIN BOARD
FRONT BOARD
FRONT_OPT_IN
FROM CPU BOARD
H/P BOARD
OPT-IN BOARD
MAIN S/W BOARD

Denon AVR-1905 Specifications

General

Speakers connectivity type	-
Receiver type	Surround
Frequency range	10 - 100000 Hz
Audio output channels	7.1 channels
Signal-to-Noise Ratio (SNR)	100 dB
Power output per channel (1KHz@6 Ohm)	110 W
Power output per channel (20-20KHz@8 Ohm)	80 W
Product color	Black
Audio decoders	DTS 96/24, DTS Neo:6, DTS-ES (Discrete 6.1), DTS-ES (Matrix 6.1), Dolby Digital EX, Dolby Pro Logic IIx
Digital Signal Processing (DSP)	Yes
HDMI in	0
Composite video in	4
Digital audio coaxial in	1
Component video (YPbPr/YCbCr) in	3
S-Video outputs quantity	2
Ethernet LAN	No
AM band range	520 - 1710 kHz
FM band range	87.5 - 107.9 MHz
Supported radio bands	AM, FM
AC input voltage	120 V
AC input frequency	60 Hz

Weight and Dimensions

Depth	171 mm
Width	434 mm
Height	416 mm
Weight	11900 g