Sharp LC-20C2E (serv.man2) Service Manual ▷ View online
21
LC-13B2H/M
LC-15B2H/M
LC-20B2H/M
LC-15B2H/M
LC-20B2H/M
125
REV
Gray level power supply reverse timing output
126
DL_EN
Read enable output
127
DL_DR
Reset read output
128
DL_CK
Line buffer clock output
129
GND
GND Grounding
130
DL_IN7
Line buffer data input
131
DL_IN6
Line buffer data input
132
DL_IN5
Line buffer data input
133
DL_IN4
Line buffer data input
134
DL_IN3
Line buffer data input
135
DL_IN2
Line buffer data input
136
DL_IN1
Line buffer data input
137
DL_IN0
Line buffer data input
138
GND
GND Grounding
139
MP_CS
Microprocessor chip set input
140
MP_CK
Microprocessor clock input
141
MP_DA
Microprocessor data input
142
MP_RDA
Microprocessor data output
143
GND
GND Grounding
144
MP_RCS
Microprocessor chip set output
145
OSD_CK
OSD clock output
146
OSD_HD
OSD HSYNC output
147
OSD_VD
OSD VSYNC output
148
OSD_B
OSD B data input
149
OSD_G
OSD G data input
150
OSD_R
OSD R data input
151
OSD_BK
OSD blank input
152
U/D
Vertical reverse signal output
153
GSPI
Gate start pulse output
154
GCK
Gate clock output
155
RESET
RESET data input
156
VDD 5V
SUPPLY 5V
157
POWER
POWER signal output
158
VDD
SUPPLY 3.3V
159
VDD
SUPPLY 3.3V
160
VDD
SUPPLY 3.3V
4-17. Description of microprocessor IC (IC2001) RH-IX3542CEZZQ terminals
No.
Terminal name
Description
1
V HOLD
For closed caption
2
HLF
For closed caption
3
CC
For closed caption
4
TIMED
For LED lighting up for timer
5
M/S OUT
Sub microprocessor master slave output
6
CSYNC
Composite synchronization signal
7
IREMI
Remote control
8
GND
GND grounding
9
GND
GND grounding
10
XCIN
32kHz oscillation input
11
XOUT
32kHz oscillation output
12
RESET
Reset state for L
13
XOUT
Microprocessor oscillator connection
14
GND
GND grounding
15
XIN
Microprocessor oscillator connection
16
VCC
Power supply
17
OSCIN
OSD clock input
22
LC-13B2H/M
LC-15B2H/M
LC-20B2H/M
LC-15B2H/M
LC-20B2H/M
18
OSCOUT
OSD clock output
19
PSWIN
Main power supply input
20
M/S IN
Sub microprocessor master slave output
21
BLK
OSD blanking output
22
NC
Not connected
23
DAC1CS
DAC1 chip select
24
DAC2CS
DAC2 chip select
25
D SW
D terminal connection detection
26
DVT
D terminal control line
27
MRDY
I
2
C bus open connection switching input
28
SCL2
I
2
C bus serial clock line 2
29
SCL1
I
2
C bus serial clock line 1
30
SDA1
I
2
C bus serial data line 1
31
SDA2
I
2
C bus serial data line 2
32
R
R signal output
33
G
G signal output
34
B
B signal output
35
SUBDOUT
Sub microprocessor data output
36
SUBDIN
Sub microprocessor data input
37
SUBCLK
Sub microprocessor clock input
38
SUBCS
Sub microprocessor CS input
39
CLKOUT
I
2
C open connection output
40
FCH
FIELD determination signal output at the time of no signal
41
IREM OUT
Not used
42
L_ERR
Fluorescent error detection input
43
A IN/OUT
AUDIO IN/OUT switching
44
N443
“H” for N443 and “L” for others
45
PAL
“H” for PAL and “L” for others
46
SECAM
“H” for SECAM and “L” for others
47
PAL_M
“H” for PAL-M and “L” for others
48
VC
Not used
49
SAFE
Not used
50
LCHG
Tone/Through switching
51
REQ
Adjustment process
52
AV/SY/DY2
US CCD input switching
53
FSMUTE
Front mute
54
RSMUTE
Rear mute
55
HPDET
Headphone detection - “L” for detection
56
SSTBY
Speaker standby (H for standby)
57
OUTSEL
Audio input/output switching
58
LMUTE
Line OUT audio MUTE
59
V IN/OUT
Video IN/OUT switching
60
SRESET
Sound multiplex reset - Reset “L”
61
DENF
De-emphasis port
62
VCC
Power supply
63
IRLEV
Wireless distance switching
64
VSS
GND grounding
65
TV/AV1
Analog SW1
66
AV/AV2
Analog SW2
67
VIS/3DS
Analog SW3
68
AV/VISY
Analog SW4
69
AV/SY/DY1
US CCD input switching 2
70
STD
Microprocessor power supply OFF output
71
PMUTE
P mute
72
POWOUT
DC/DC control output
73
NC
Not connected
74
NC
Receive in slave state
23
LC-13B2H/M
LC-15B2H/M
LC-20B2H/M
LC-15B2H/M
LC-20B2H/M
75
MPRCS
G/A read enable
76
MPRDA
G/A data input
77
MPCS
G/A chip select
78
MPDA
G/A data out
79
MPCLK
G/A clock
80
DDCRESET
Digital decoder reset
81
KEY4
Key input 4
82
KEY5
Key input 5
83
PASTBY
PA standby output terminal
84
SAW SW
For tuner switching (H used)
85
MODE1
For tuner switching (H used)
86
MODE2
For tuner switching (H used)
87
SSYSTEM
For S system switching detection
88
SSW
S terminal connection input - “L” for terminal connection
89
AFT
AFT voltage input
90
AGC
AGC voltage input
91
KEY1
Key input 1
92
KEY2
Key input 2
93
KEY3
Key input 3
94
POWIN
DC/DC start detection
95
VSYNC
OSD vertical synchronization signal
96
AVSS
Analog power supply input (GND)
97
HSYNC
OSD horizontal synchronization signal
98
YVSETB
For closed caption
99
AVCC
OSD power supply input
100
CVIN
Closed caption signal input
4-18. Description of multistandard sound processor IC (IC3304) RH-IX3371CEZZQ terminals
No.
Terminal name
Description
1
NC
Not connected
2
I
2
C_CL
I
2
C clock
3
I
2
C_DA
I
2
C data
4
I
2
S_CL
I
2
S clock
5
I
2
S_WS
I
2
S word strobe
6
I
2
S_DA_OUT
I
2
S data output
7
I
2
S_DA_IN1
I
2
S data inout
8
ADR_DA
ADR data output
9
ADR_WS
ADR word strobe
10
ADR_CL
ADR clock
11
DVSUP
Digital power supply 5V
12
DVSUP
Digital power supply 5V
13
DVSUP
Digital power supply 5V
14
DVSS
Digital ground
15
DVSS
Digital ground
16
DVSS
Digital ground
17
I
2
S_DA_IN2
I
2
S2-data input
18
NC
Not connected
19
NC
Not connected
20
NC
Not connected
21
RESETQ
Power-on-reset
22
NC
Not connected
23
NC
Not connected
24
DACA_R
Headphone out, right
25
DACA_L
Headphone out, left
26
VREF2
Reference ground2
27
DACM_R
Loudspeaker out, right
28
DACM_L
Loudspeaker out, left
24
LC-13B2H/M
LC-15B2H/M
LC-20B2H/M
LC-15B2H/M
LC-20B2H/M
29
NC
Not connected
30
DACM_SUB
Subwoofer output
31
NC
Not connected
32
NC
Not connected
33
SC2_OUT_R
SCART output2, right
34
SC2_OUT_L
SCART output2, left
35
VREF1
Reference ground1
36
SC1_OUT_R
SCART output1, right
37
SC1_OUT_L
SCART output1, left
38
CAPL_A
Volume capacitor AUX
39
ABVSUP
Analog power supply 8V
40
CAPL_M
Volume capacitor MAIN
41
NC
Not connected
42
NC
Not connected
43
AHVSS
Analog ground
44
AHVSS
Analog ground
45
AGNDC
Analog reference voltage
46
NC
Not connected
47
SC4_IN_L
SCART4 input, left
48
SC4_IN_R
SCART4 input, right
49
ASG4
Analog Shield Ground4
50
SC3_IN_L
SCART3 input, left
51
SC3_IN_R
SCART3 input, right
52
ASG2
Analog Shield Ground2
53
SC2_IN_L
SCART2 input, left
54
SC2_IN_R
SCART2 input, right
55
ASG1
Analog Shield Ground1
56
SC1_IN_L
SCART1 input, left
57
SC1_IN_R
SCART1 input, right
58
VREFTOP
Reference voltage IF A/D converter
59
NC
Not connected
60
MONO_IN
Mono input
61
AVSS
Analog ground
62
AVSS
Analog ground
63
NC
Not connected
64
NC
Not connected
65
AVSUP
Analog power supply 5V
66
AVSUP
Analog power supply 5V
67
ANA_IN1+
IF input1
68
ANA_IN–
IF common
69
ANA_IN2+
IF input2
70
TESTEM
Test pin
71
XTAL_IN
Crystal oscillator
72
XTAL_OUT
Crystal oscillator
73
TP
Test pin
74
AUD_CL_OUT
Audio clock output (18.423MHz)
75
NC
Not connected
76
NC
Not connected
77
D_CTL_I/O_1
D_CTL_I/O_1
78
D_CTL_I/O_0
D_CTL_I/O_0
79
ADR_SEL
I
2
C Bus address select
80
STANDBYQ
Stadby (low-active)
4-19. Description of tuner unit (TU3201) VTUVT2U5CD553 terminals
No.
Terminal name
Description
1
AGC
RF-AGC
2
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