Read Sharp LC-28HM2E (serv.man3) Service Manual online
53
LC-28HM2
AN-28SP2
Æ
Major functions and pin allocations
1
Decoder IC (IC4001)
Pin No.
Name
I/O
Function
44
DDCK
O
Video reference dot clock (Approx. 40MHz)
46
DE
O
Video display data field
47
Vsync
O
Vertical sync signal (60Hz)
48
Hsync
O
Horizontal sync signal (48.36kHz)
2
Panel control G/A (IC4302)
Pin No.
Name
I/O
Function
39
Hsync
I
Horizontal sync signal (48.36KHz)
41
Vsync
I
Vertical sync signal (60Hz)
43
DE
I
Video display data field
44
ICLK
I
Video reference dot clock (Approx. 40MHz)
91
REF_CLK
I
G/A operation reference clock (40MHz)
105
RST
I
Reset (Active Hi)
116
DATA_W
I
Microprocessor transmission terminal (Data)
117
MCLK
I
Microprocessor transmission terminal (Clock)
118
PCS
I
Microprocessor transmission terminal (Select)
113
OFL1
O
Lamp brightness control signal
119
REV
O
Common drive signal
120
REVV0
O
Gradation control power drive signal
134
GLBR
O
Vertical scan switch signal (Normal Hi)
136
GSP2
O
Gate drive start signal (Either one output based on GLBR)
137
GSP1
O
138
GCK
O
Gate clock
139
POWER
O
Gate drive signal
181
OCK
O
Pixel clock (Identical to ICLK)
192
SPLS
O
Source drive sampling start signal
231
SPRS
O
(Either one output based on LBR)
234
LS
O
Source drive latch signal
235
LBR
O
Horizontal scan switching signal
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