Philips 107T60 - Page 91

107T6 CRT
91
Repair Flow Chart (Continued)
6 ABL
Check output
from 0V to 5V
3, 2 IIC bus
Check idle status
SDA=Pin3=hi
SCI=Pin2=hi
Check
7802 M24C16
7804 SAA4848PS
E. CPU (7804)
check List
Basic check
Check CPU Pin16=5V
Pin45/Pin46=48MHz
Pin38=AGND
Q1
Q2 Q3Hor. Freq. (Khz)
V32 17" 71K S-CAPACITORSWITCHTABLE
52, 53, 50, 8
Hsync/Vsync
Check Sync.
Hsync-in=Pin52
Vsync-in=53
Hsync-out=Pin50
Vsync-out=8
1. Normal
Fhout=Fhin
Fvout=Fvin
2. Self test
Fhout=48KHz
Fvout=72Hz
3. Sync out of range
Fhin>72.8KHz,<28KHz
Fvin>168Hz, <45Hz
<29.00 0 0 0
29.00-33.00 0 0 0
33.00-36.00 0 1 0
36.00-40.00 0 11
40.00-44.00 1 00
44.00-47.00 1 00
47.00-51.00 1 0 1
51.00-55.00 1 0 1
55.00-58.00 11 0
58.00-62.00 11 0
62.00-66.00 11 0
>66.00 11 1
12, 11, 10(Q1, Q2, Q3)
S-cap switch
Check Q1-Q3
low: 0
hi:1
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