Sanyo DP32640 Troubleshooting Manual page 2

Repair Flow Chart: Trouble Condition
Green Power LED does NOT turn on. The TV is dead.
Green Power LED:
Does not turn ON.
The TV is dead.
On Main Signal Bd.:
Is the "5V_STBY" voltage
supplied?
(see TABLE *1.0)
yes: 5V
Confirm wire harness connection
between Main Bd. & Power Bd.,
and confirm LED again.
On Main Signal Bd.:
Is the "5V_STBY" voltage
on "K8CTR pin 1" ?
yes: 5V
While pushing the
"Power Key SW": is the 4.6V from
"KEY SW" supplied to "K8CTR
pin 3"?
yes
Main Bd. is not working.
Replace "Main Bd"
(TABLE *1.0) Main Bd.: 5V_STBY Test Points
26" Models 32" Models
DP26640-00 N8ME DP32640-00
DP26640-01 N8MF DP32640-01
DP26640-02 N8MG DP32640-03
DP26640-04 N8MH
(TABLE *2.0) Power Bd.: 5V_STBY Test Points
26" Models 32" Models
DP26640-00 N8ME DP32640-00
DP26640-04 N8MH DP32640-03
DP26640-01 N8MF DP32640-01
DP26640-02 N8MG
no: 0V
Unplug (K8C) connector on Main Bd.
On Power Bd.: Is the "5V_STBY"voltage supplied?
(see TABLE *2.0)
yes: 5V
Replace "Main Bd."
and "Wiring Harness"
no: 0V
Main Bd. is not working.
Replace "Main Bd".
No voltage (0V) at K8CTR pin 3, or 4.6V always present.
Key Switch Assy. unit will be broken.
Replace "Key Switch Assy."
5V_STBY on Main Bd.
Main K8C "pin 4"
N8LE
N8LF
N8LH
5V_STBY on Power Bd.
CN2 "pin 4"
N8LE
N8LH
K6B "pin 4"
N8LF
no: 0V
Power Bd. is not working.
Replace "Power Bd."
Confirmation Voltage
Confirmation Voltage
page 1
5 V
5 V
5 V