Technical data

42
107S2 CM23 GSIII
Repair Flow Chart
E. CPU
check list
check cpu pin11/ pin32= 5V
pin9/pin10=12MhZ
pin12/pin31=gnd
power saving pin21 pin22
normal hi hi
standby low hi
off low low
13~17 Hsync / Vsync
Fh-khz Q1 Q2 Q3
<33.24 0 0 0
33.24~36.51 0 0 0
36.51~42.38 1 1 0
42.38~47.48 0 0 1
47.48~53.10 0 0 1
53.10~58.25 1 0 1
58.25~61.89 0 1 1
61.89~66.00 1 1 1
> 66.00 1 1 1
18. Hunlock
check sync.
Hsync_in=pin13
Vsync_in=pin16
Hsync_out=pin14
Vsync_out=pin17
Basic Check
check Q1-Q3
pin6/pin5/pin4
low:0
hi :1
4,5,6 (Q3,Q2,Q1)
S-cap switch
1 . Normal
Fhout=Fhin
Fvout=Fvin
2. Self test
Hout=46.875Khz
Fvout=75Hz
3.sync out of rang
Fhin>72.8
Fvin>168Hz
check pin18
normal=Hi
blank=low
21, 22 P.S.
LED
19. Blanking
check pin3
normal : low
change timing : Hi
H size compensation for
the load variance
3. H-EHT
pin 21 STBY
pin 22 OFF
check
from 5V to 0V
26, Reset
check
2814 / 6811 / 3834
check
active=hi
no active=low
23. Degauss
9
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