Samsung RS2534WW Service Manual page 54

Diagnostics
11-8) If CoolSelect Zone TM
1) If the lamp of CoolSelect Zone
Where the Panel key isn' t selected:
1.Check the wires of CoolSelect Zone
2. Check the Lighting Circuit of CoolSelect Zone
3. Check the main PCB of CoolSelect Zone
the panel and main PCB.
2) Where the Panel PCB key isn't selected:
- The basic method is applied to check – if you fail in troubleshooting after above the execution, then
Refer to 8-7) CoolSelect Zone
Panel Circuit and measure the
wave form.
1. Check the wires of CoolSelect Zone
2. Check Short/Open the Lighting Circuit section of CoolSelect Zone
3. Check the inside main PCB of CoolSelect Zone
between main PCB.
isn't operated normally (RS2556, RS2578)
TM is not lit.
Is the connector of
CoolSelect Zone
Is the connector of main
PCB (CN51) inserted correctly?
Is the connector of
CoolSelect Zone
Is lighting operated
normally when the exchange of CoolSelect Zone
TM – check the disconnection of wire, short between wires.
TM panel in the main PCB for Short/Open.
TM assembly for Short; the state of wire assembly between
Aren't a key or more pressed
continuously?
Isn't the PCB system
still operated by separation?
Is lighting operated
normally after the exchange of
panel-PCB?
TM ,
Is a periodical wave
form outputted from the main
TM – check the disconnection of wire, short between wires.
TM ass'y for Short; the state of wire assembly
Start
NO
TM inserted correctly
in the fridge?
YES
NO
YES
NO
TM panel PCB
inserted ?
YES
YES
TM
panel PCB?
NO
NO
YES
NO
YES
YES
NO
NO
PCB IC9?
YES
TM panel in the main PCB from.
54
Reinsert the connector; troubleshoot
a bad contact.
Reinsert the connector in the main
PCB.
Reinsert the connector; troubleshoot
a bad contact.
Panel PCB has trouble for itself.
Reassemble the PCB ass'y/Enforce
the cancellation of pressed keys
Reassemble the PCB asswmbly and
Enforce the cancellation of pressed keys
Panel PCB has trouble for itself.
1. Replace the main PCB.
2. Check the wires of CoolSelect Zone TM
panel for Short.