Table of Contents
Advertisement
TROUBLE SHOOTING FLOWCHART
NO RASTER
GREEN
LED COLOUR ?
RED
GREEN
Power on by R/C.
RED
Does horizontal circuit
momentary oscillate?
Yes
No
Check the power
Check protector
circuit consisting of
circuit and pin 106
IC701, IC702,
& 107 (waveform
T701 and its
no.3 & 4) of IC
related parts. Also
2100. Also check
check the
the waveform no.7
horizontal out
of IC501 at pin 4
circuit Q604 and its
and its related
related parts.
parts.
Check CRT connector (KY), (H) bias
(14V,120 V, 210 V line).
Normal
Abnormal
Check R,G,B
Check the 14V,
input and output
120V and 210V
of IC 851.
line from the
main PWB side.
TROUBLE SHOOTING FLOWCHART (Continued)
NO LED LIGHT
Check F3700.
Check F4701.
Normal
No
Does STBY+5V appear at pin 1
P1001 main unit ?
No
Yes
Check the power
Check 3V output
circuit at the front
from pin 22 of IC
unit consisting of
2100 and its
IC4702, IC4701,
related parts.
D4707 and its
related parts.
Blown out
Replace the Fuse.
Is the Fuse again blown out?
Yes
Check the power circuit
consisting of IC701, IC702,
T701 and its related parts.
Advertisement
Table of Contents
