Hitachi PJL1035 2 Service Manual page 18

Picture is not displayed
(both RGB and VIDEO input)
Check at operating mode with RGB1 or 2 input
Are
voltage input
at pins 4 , 6 , 8 , 10 , 12 ,
of EDS1 on the
14
PWB ass'y
drive?
4 +6.6V
6 +16.5V
YES
+5V
8
10 +5V
12
+5V
14
+5V
Are signal
input at these
pins of EDI1 on the
PWB ass'y
drive?
2 ~ 4
7 ~ 9
YES
12 ~ 14
21
22
Are signal
input at each pin
on the PWB ass'y
drive?
YES IS02 1
IS02 3
I510
120
I510
133
I510
94
Are the
signal output at
each pin of E701, E801
and E901 on the PWB
ass'y drive?
YES See page 18
1
2
3
LCD module ass'y
15
17
18
20 21
23
24
25
29
30
31
NO
PWB ass'y signal
NO
R signal
G signal
PWB ass'y drive
B signal
H sync (RGB)
V sync (RGB)
NO
PWB ass'y drive
: V sync
: H sync
~ , , , : R signal data
124 126 128 132
~ : G signal data
140
~ , , : B signal data
99 110 111
NO
PWB ass'y drive
: PSIG
: GND
~ 14 : VSIG
: 15.5V
: HST
, 19 : HCLK
, : GND
: ENB
: VCK
: VST
: PCG
: 15.5V
: COM
– 18 –
PWB ass'y input terminal RGB
PWB ass'y input terminal RGB
PWB ass'y DIGITAL
Power unit (circuit)