Trouble Shooting; No Power; No Picture From Monitor Output - Marantz SR8000 Service Manual

11. TROUBLE SHOOTING

No Power

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