Denon AVR-1804 Service Manual

9
9
AVR-1804/884 / AVC-1880
Pin
No.
Pin Name FunctionI/O
24 RELAY SPK A O FRONT A RELAY
25 RELAY SURR O SURROUND RELAY
26 RELAY CNT O CENTER RELAY
27 RELAY H/P O H/P RELAY
28 FUNC UP I ENCODER INPUT(FUNCTION)
29 H/P DETECT I H/P DETECT
30 FUNC DOWN I ENCODER INPUT(FUNCTION)
31 NC -
-
-
-
-
-
-
-
-
-
-
-
-
34 SURR MUTE O
O
O
SURROUND MUTE
KIC9459 CONTROL STB
ZONE2/SURROUND BACK : SELECTION RELAY
FRONT B RELAY
35 9459 STB
36 MULTI SB RLY
37 RELAY SPK B
38 FL DRV RESET O LC75721NE RESET
39 RELAY POWER O POWER RELAY
40 RESET I RESET
41 GND I
42 XTAL
43 EXTAL
44 FL DRV CE O LC75721NE CE
45 FL DRV DATA O LC75721NE DATA
46 FL DRV/2090 CLK O CONTROL CLOCK
47 2090 DATA O BU2090F DATA
48 VOL DOWN I ENCODER INPUT(VOLUME)
49 VOL UP I ENCODER INPUT(VOLUME)
50 SEL DOWN I ENCODER INPUT(SELECT)
51 SEL UP I ENCODER INPUT(SELECT)
52 AV SS
53 V REF
54 AV DD
55 89057 INT
56 GND
57 STEP OPT I AREA SELECT
LC89057 INT
58 SET OPT I MODEL SELECT
59 GND
60 KEY IN3 I KEY INPUT
61 KEY IN2 I KEY INPUT
62 KEY IN1 I KEY INPUT
63 9K/10K STEP I TUNER STEP SELECT
64 PROTECT I PROTECTION
65 C-VIDEO DET I
I
Composite Signal detect input (H: Signal input)
S Signal detect input (H: Signal input)
66 M32 SCLK O MELODY32 CLOCK
67 1837 CE O CODEC CE
68 M32 RESET O MELODY32 RESET
69 S-VIDEO DET
70 STBY LED O
O
O
STANDBY LED
LC74781 CONTROL ENABLE
LC74781 CONTROL CLOCK
71 NC
72 NC
73 74781 CS
74 74781 SCLK
75 SURR BACK MUTE O SURROUND BACK MUTE
76 2090 CLK2 O BU2090 CONTROL CLOCK2 (VIDEO)
32 CNT MUTE O CENTER MUTE
33 NC

Denon AVR-1804 Specifications

General

Brand	Denon
Model	AVR-1804
Category	Receiver
Language	English