Connector Panel; A Board Waveforms - HP GDM-FW9012 Service Manual

CONNECTOR PANEL

TO A BOARD
CN402
VD HD B G R
5BNC
INPUT2(BNC)
B-SS3536<AEP>-A..-P2-24
TO N BOARD
CN002

• A BOARD WAVEFORMS

1 1 1 1 1
2 2 2 2 2 3 3 3 3 3
4.0 Vp-p (H) 56.0 Vp-p (H) 4.0 Vp-p (H)
5 5 5 5 5
4 4 4 4 4 6 6 6 6 6
56.0 Vp-p (H) 4.2 Vp-p (H) 58.0 Vp-p (H)
7 7 7 7 7 8 8 8 8 8 9 9 9 9 9
53.0 Vp-p (H) 55.0 Vp-p (H) 58.0 Vp-p (H)
0 0 0 0 0
2.2 Vp-p (8MHz)
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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 28 27
R G B
1 2 3 4 5 6 7 8 9 10
• 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
OSD IN (B) 13
SUB MAIN
INPUT (B) CLAMP
11
CONTRAST CONTRAST
VCC1 (B) 12
16
GND1 (B)
Main
ABL IN 17
CONTRAST
8bit
Sync On
INPUT (SOG) 7 Green
Sep
SOG Sep OUT
20
21 14
26 25 24 23 22 21 20 19
G
Sync
OR
Sepa
11 12 13 14 15 16 17 18
42 34 30
RETRACE
OSD MIX AMP 41
BLANKING
CLAMP
F/B
RETRACE
OSD MIX AMP 38 OUTPUT (G)
BLANKING
CLAMP
F/B
RETRACE
OSD MIX AMP 33 OUTPUT (B)
BLANKING
35
Contrast ref.
CLAMP
F/B
31 Contrast cont.
OSD
LEVEL
4bit
19
VCC=5V
23 SDA
B SUB CONT 8bit
BUS
DAC
I/F
G SUB CONT 8bit
22 SCL
R SUB CONT 8bit
24 GND (5V)
1 25 26 27 28 29 32 36 39
GDM-FW9012( E) 4-11
OUTPUT (R)