Read Sharp LC-121M2E (serv.man3) Service Manual online
18
LC-121M2E
LC-150M2E
LC-150M2E
LC-121M2E
LC-150M2E
LC-150M2E
6. INTEGRATED CIRCUIT TERMINAL ARRANGEMENTS
1. IC2001 (QFP, 80pins)
Terminal No.
Terminal name
I/O
Function
1
N. C
–
2
N. C
–
3
KEY3
I
Key input 3
4
KEY4
I
Key input 4
5
H PDET
I
Headphon input pickup
6
M
O
Audio selection 1
7
S
O
Audio selection 2
8
MONO
O
Forced monophonic
9
FS MUT
O
Front speaker MUTE output
10
RS MUT
O
Rear speaker MUTE output
11
N. C
–
12
N. C
–
13
CSYNC
I
Composite sync signal input
14
IF AGC
I
IFAGC input
15
PLCS
O
TV PLL chip select output
16
MRDY
I
I
2
C bus opening/connection selection input
17
PLLD
I
TV-PLL lock signal input
18
LMUTE
O
Lineout-Mute output
19
SCLK
I/O
Serial clock signal
20
SOUT
O
Serial data output
21
AFT
I
AFT voltage input
22
AGC
I
AGC input voltage
23
SCL
I/O
I
2
C bus serial clock line
24
SDA
I/O
I
2
C bus serial data line
25
N. C
–
26
N. C
–
27
CNV s s
GND connection
28
φ
O
Timing output
29
RESET
I
Change to “Reset mode” in “L” state
30
Xin
I
Microcomputer oscillator connection
31
Xout
O
Microcomputer oscillator connection
32
V s s
I
GND
33
PSW
I
Power switch input
34
POW
O
DC/DC control output
35
COCS
O
G/A chip selection output
36
DACS
O
D/A chip selection output
37
BOOST
O
Booster selection output
38
BOOLV
O
Booster level selection output
39
N. C
–
40
N. C
–
41
DA2CS
O
D/A 2 chip selection output
42
AV1/AV2
O
Analog SW selection 1
43
AV/S
O
Analog SW selection 2
44
Y/COM
O
Analog SW selection 3
45
IN/OUT
O
Analog SW selection 4
46
REQ
O
“H” in [ADJUSTMENT] mode, “L” in other modes.
47
Empty
I
48
STB
O
Micro computer power off output
49
SECAM
O
“H” in SECAM mode, “L” in other modes.
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