61
11. TROUBLE SHOOTING
no
yes
no
yes
no
yes
no
no
yes
no
yes
no
yes
yes
No Power
Standby
LED Lights up on
standby mode
FLD shows
ERROR PWR1
?
24V
to PU04?
PU04 has any problem.
QU01(76p or 77p) lnput level
is too Low.
Can PY04
15V ?
Connection has
problem
Relay
(LB02:PB04)
control is OK ?
PB04 , or connection has
any problem
PY04,or Main Transf(L001)
has any problem
Vkk or FL is not supplied
to PU04
Power supply circuite (PB04)
has any problem.
To be check +5VL or
PDOWN signal.
15V
to PU04?
PY04 has
any problem
Can PY04
24V ?
OSD IC (QL04 QX06) or have
no
driver QL10, QX12 have
any trouble
yes
no
yes
Input to OSD IC(QL04, QX06) has any trouble.
Video input detection has any trouble.
To be ckeck CV-DET, Y/C-DET
No picture
from Monitor output
OSD menu is
shown?
Video Input select circutes
have problem
VCR1&2 out
are OK ?
Video output stage are no problem
OSD ICs control is no problem