Denon AVR-1804 Service Manual

1
2
3
45
6
7
8
A
B
C
D
E
SCHEMATIC DIAGRAMS (11/11)
AVR-1804/884 / AVC-1880
89
SCHEMATIC DIAGRAMS (11/11)
TUNER UNIT
89
REC SIGNAL LINE
OUTPUT
LEVEL
IF
AMP
R-NO.
CF402
CF401
R474
SFE10.7MA8
SFE10.7MA8
R407
R408
R428
R473
R444,R445
R442,R443
1.2K
JUMPER
EMPHASIS
DE
T404,T405
J403,J404
R440,R441
C446,C447
R438,R439
C462
BIRDIE
ANTI
R-NO.
2.4K
10K
680
3.3K
8.2K
3.3K
3.3K
2.2K
680620
E2,G2A,EK
180
E3,EU
180
SFE10.7MS3
SFE10.7MS3
SFE10.7MA8
SFE10.7MS3
-
E1C,E1K,EUT N
-
-
-
620 -
JUMPER
6.8K
1.2K
8.2K
3.3K
-
-
-
-
-
(MO/ST PULL UP)
(TUNED PULL UP)
(ST PULL UP)
100K
270P
120K
-
330P
150K
INSERT
-
220K
-
JUMPER
120K
-
180P
100K
- 470P -
E2,G2A,EK
E3,EU
-
-
INSERT
E1C,E1K,EUT
-
JUMPER
T406
J442 JUMPER
JUMPER
-
-
-
-
-
-
N
-
-
CHASSIS
TUNER B'D
ETC
E3,EUR-NO.
R471 18K
VR402 100KB
C434 1/50 0.33/50
100KB
JUMPERR446,R447
470PC448,C449
-
470
39K
-
E2,G2A,EK
330P
JUMPER
100KB
0.33/50
E1C,E1K,EUT N
39K
-
-
-
-
-
TO CPU UNIT
C455
SW401
DET_OUT
GND
PLL_CLK
ST
TUNED
TU_MUTE
PLL_DT_IN
PLL_DATA
21
NC
+14.5V
876543
9K/10K
PLL_CE
GND
912131110
R457
-
JUMPER
INSERT
22N
E1,H,T
100 100
E1C
OPTION TABLE
1514
TUNER_R
16
GND
TUNER_L
1
SR
FM:100KHz,75us
AM:10KHz
E1,H,T,C
E3 SB MULTI
FM:50KHz,50us
AM:9KHz
E2 ONLY
6CH INPUT
SR
9876
C
FR
GND GND
FL
10 115432
SW
SL
GND GND GND
FL
CHASSIS
SW
SL
FR
C
22P-J
C420
X7M2
X401
AMIF
1/2
DATA SHIFT REGISTER
LATCH
COUNTER
UNIVERSAL
C2B I/F
DIVIDER
12bit PROGRAMABLE
1/16,1/17 4BIT
SWALLOW COUNTER
RESET
ON
POWER
DETECTOR
UNLOCK
PUMP
PHASE DETECTOR
DIVIDER
REFERENCE
NC
COUNT
VDD
PD
AIN
AOUT
ATT
MONO
DE-EM
DO NC
22 21
1111
FM
1
2109876543
121314151617181920
X-IN
CE
CLK
DATA
X-OUT
GND
FM OSC AM OSC
AM
LC72131IC401
KDS160
D403
10
R401
R470
1K
6P
C408
R418
33K
C419
10/35
2K2
R414
UZ5V1 ZD401
1K
R417
1K
R419
1K
R415
4K7R424
1N-K
C411
100P-J
C413
47/16
C415
5K6 R412
2.2/50
C414
C412
22N-K
220(1/4)
R413
R416
680(1/4)
A114EK
Q402
123
46
123
456
L403
100K
R404
10/35
C416
C405
22N-K
100P C409
C410 470P
AM-IF
FM - IF QD
LED
DRIVER
POST
AMP
IFIF
BUFBUF
NARROW
S-METER
DETS-METERAGCMIXRFREGOSC
OSC
BUF
123456789101112
131415161718192021222324
LA1266
IC402
18K
R471
T403
FM-DET-B
R431
5K1
18P-J
C406
C435
22N-K
A114EK
Q404
100/16
C452
A114EK
Q403
C436
22N-K
3K3
R420
C421
24P-J
C465
10N-K
1/50
C429
10KR477
12K
R475
10KR478
1UH
L401
1N-K
C401
3P
C464
10K
R472VT
47N-K
C472VT
220R471VT
C471VT
1/50
1N-K
C402
R476
56K
C417
100/16
22N
C403
R405
100(1/4W)-R
180
R474
R403
470
100
R456
10M7A8
CF401
ANT
NC
AGC
GND
VT
+B
IF OUT
OSC OUT
87654321
FE401
FTH4-401TB
R407
470
4K7
R406
C418
10N
R455
330
1K2
R408
10M7A8
CF402
C3880K
Q401
470
R409
10UH
L402
2P
C404
22N-K
C423
R411
68K
22N
C424
4K7
R410
C461
22P
T401
10K
R427
R426
10K
C428 22N
4.7/50
C427
3.3/50
C426
22K
VR401
100K
VR402
R423
22K
4.7/50
C425
R429
82
3K3
R428
450C
CF403
47/16
C437
CSB456F
X402
R435
3K3
1/50
C438
C453 27P
C440
1/50
C439
0.22/50
100K
R479
C114YK
Q407
1/50
C441
CN401
A114EK
Q408
1SS133T
D406
2K2
R448
4K7
R459
CN402
SW401
R457
100
C432
47/16
R430
100(1/4)-R
33P-J
C431
22N-K C433
C455
22N-K
FM-DET-A
T402
10K
R432
1/50
C434
VOLT
REG
OSC PHASE
COMPA
RATOR
PILOT
DEF
LAMP
DRIVER
TRIGGER
STEREO
SWITCH
MUTING
OUTPUT
VCC ON
MUTING
VCOSTOP
SYMMETRICAL
REACTANCE
CIRCUIT
MUTING
AM
FM
CHANGE
DECODER
MUTING
CONTROL
FM/AM
CHANGE
FF FF
FF FF FF
38KHZ 19KHZ 19KHZ
1234567891011
1213141516171819202122
IC403
LA3401
200K(B)-H
VR403
47N-M
C430
R439
100K
J442
4.7/50
C444
C463
56N(M)
680P-J
C456
1K
R450
3K9
R449
100
R472
C3880K
Q409
123
456
T406
C462
470P
R473
2K4
3K3
R443
J403
120K
R441
10/35
C451
C445
10/35
120K
R440
C449
470P
C447
270P
MPX
123
456
T404
01050
R445
8K2
470
R447
KTC2874B
Q405
8K2
R444
MPX
123
456
T405
01050
R446
470
KTC2874B
Q406
C450
10/35
R442
3K3
J404
C448
470P
270P
C446
100
R903
2.2M R909
C903
100P-J
100K
R438
1SS133T
D404
10/35
C443
C442
2.2/50
R437
100K
1SS133T
D405
47K
R436
C906
100P-J
2.2M
R906
0.01
C918
4K7
R458
2.2M
R905
2.2M
R910
R911
100
R904
100
100P-J
C905
C904
100P-J
100
R908
100
R907
2.2M
R902
2.2M
R901
100
R912
C901
100P-J
C902
100P-J

Denon AVR-1804 Specifications

General

Tuner	AM/FM
Response Bandwidth	10 Hz - 100 kHz
Signal-To-Noise Ratio	100 dB
Total Harmonic Distortion	0.08%
Input Impedance	47 kOhm
Input Sensitivity	200 mV
Surround Sound	Dolby Digital, DTS, Dolby Pro Logic II
Connector Type	RCA
Dimensions	434 x 168 x 391 mm