HP N.hemisphere GDM-FW9012 Service Manual page 36

R PANEL
TO A BOARD
CN402
B G R
BNC)
536<AEP>-A..-P2-24
AVEFORMS
2 2 2 2 2 3 3 3 3 3
56.0 Vp-p (H) 4.0 Vp-p (H)
5 5 5 5 5
6 6 6 6 6
4.2 Vp-p (H) 58.0 Vp-p (H)
8 8 8 8 8 9 9 9 9 9
55.0 Vp-p (H) 58.0 Vp-p (H)
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RCV
V901
PICTURE
H
TUBE
24TXF
KB KR G2 G4
KG G1 GM
HV
TO D BOARD
T902(FBT)HV
• A BOARD IC401 M52757FP
36 35 34 33 32 31 30 29
R G B
1 2 3 4 5 6 7 8
• A BOARD IC402 M52749FP
OSD IN (R) 4
SUB MAIN
INPUT (R)
2 CLAMP
CONTRAST CONTRAST
VCC1 (R) 3
5
GND1 (R)
OSD IN (G) 9
SUB MAIN
INPUT (G) 6 CLAMP
CONTRAST CONTRAST
VCC1 (G)
8
GND1 (G)
10
13
OSD IN (B)
SUB MAIN
INPUT (B) 11 CLAMP
CONTRAST CONTRAST
VCC1 (B) 12
GND1 (B) 16
ABL IN
17
Sync On
INPUT (SOG) 7 Green
Sep
SOG Sep OUT 20
21 14
28 27 26 25 24 23 22 21 20 19
G
Sync
OR
Sepa
9 10 11 12 13 14 15 16 17 18
42 34
RETRACE
OSD MIX AMP
BLANKING
CLAMP
F/B
RETRACE
OSD MIX AMP
BLANKING
CLAMP
F/B
RETRACE
OSD MIX AMP
BLANKING
CLAMP
F/B
OSD
LEVEL
Main
4bit
CONTRAST
8bit
B SUB CONT 8bit
DAC
G SUB CONT 8bit
R SUB CONT 8bit
1 25 26 27 28 29
30
41 OUTPUT (R)
38 OUTPUT (G)
33 OUTPUT (B)
35
Contrast ref.
31
Contrast cont.
19 VCC=5V
23
SDA
BUS
I/F
22
SCL
24 GND (5V)
32 36 39
GDM-FW9012( E) 4-11