JVC AV-56WP74 Service Manual page 8
Rear projection television
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Also See for AV-56WP74:
- User manual (64 pages) ,
- Service manual (98 pages) ,
- User manual (64 pages)
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AV-48WP74
AV-56WP74
2.3 TECHNICAL INFORMATION
2.3.1 MAIN MICRO COMPUTER (CPU) FUNCTION (MN102H75K)
Pin No.
Pin name
1
NC
2
/MICON_V
3
LB_PRO
4
NC
5
/RST
6
NC
7
/TEST
8
OSD_YS
9
NC
10
NC
11
A_MU
12
/MICON_H
13
M_MU
14
P46,OSDXI
15
P45,OSDXO
16
SDA2
17
AC_IN
18
SCL2
19
TU_POW
20
VCOI
21
PDO
22
/IP_RESET
23
OSD_YM
24
OSD_B
25
POWER_LED
26
OSD_G
27
OSD_R
28
VREF
29
IP_ERR
30
IREF
31
COMP
32
AVDD
33
CLL
34
VREFLS
35
SUB_CCD
36
NC
37
VSS
38
MAIN_CCD
39
VREFHS
40
CLH
41
VDD/VPP
42
CLK SW1
1-8 (No.52105)
I/O
Function
-
--------
I
V.sync for OSD
I
Low B protection detection
-
--------
I
Main cpu reset input
-
--------
I
+3.3V
O
OSD Ys output
-
--------
-
--------
O
Audio muting
I
H sync input
O
Monitor sound out muting
-
Keep for OSD
-
Keep for OSD
2
I/O I
C bus (CLK) for MTS
I
AC (60Hz) input
2
O
I
C bus (DATA) for MTS
O
Tuner power control
I
LPF input
O
LPF output
O
Reset
O
OSD YM output
O
OSD blue output
O
Lighting for POWER LED
O
OSD green output
O
OSD red output
I
--------
I
AMDP program load detect.
I
--------
I
--------
I
+3.3V
I
For sub CCD
I
STD VOL for sub CCD
I
For sub CCD
-
--------
I
GND
I
For main CCD
I
STD VOL for main CCD
I
For main CCD
O
+3.3V
O
IP clock switch
Pin No.
Pin name
I/O
43
CLK SW2
O
44
ON_TIM
O
45
CONVER_RXD
O
46
CONVER TXD
I
47
SBT1
I
48
NC
-
49
NC
-
50
NC
-
51
NC
-
52
EE_ABL
O
53
CHROMA
O
54
DC_COTL
O
55
NC
-
56
NC
-
57
TU2_AID
I
58
/LOB_POW
O
59
COMPULINK
I
60
/POWERGOOD
I
61
MECA_ON
I
62
/MAIN_POW
O
63
NC
-
64
/B1 POW
O
65
C/N
I
66
X_RAY
I
67
NC
-
68
KEY2
I
69
KEY1
I
70
SCL1
O
71
SDA1
I/O I
72
REMO
I
73
NC
-
74
VSS
I
75
OSC2
O
76
OSC1
I
77
VDD
I
78
SCL0
O
79
AP_CLK
-
80
SDA0
I/O I
81
NC
-
82
NC
-
83
NC
-
84
P_MU
O
Function
IP clock switch
Lighting for ON TIMER
Convergence control
Convergence control
--------
--------
--------
--------
--------
ACL control
Chroma / gamma control
DC, control
--------
--------
Main AFC input
Low B power control
AV COMPULINK lll input
Power condition check
Machine SW interrupt
Main power control
--------
B1 power control
AFC voltage input
X-ray protection detection
--------
Front key input 2
Front key input 1
2
I
C bus (CLK) for EEP-ROM
2
C bus (SDA) for EEP-ROM
Remote control input
--------
GND
4MHz clock oscillation
4MHz clock oscillation
+3.3V
2
I
C bus (CLK) for general
--------
2
C bus (SDA) for general
--------
--------
--------
Picture muting
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