Diagnostics
11-6) If the panel PCB is not working normally:
1)Where lighting of the panel PCB is disabled, or only some lamps are disabled. Start
See Ref. 1: ‘View of the connection
Is the connector | NO |
of upper hinge cover inserted |
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normally? |
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| Reinsert the connector. Troubleshoot | |||
Is the main PCB |
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connector(CN50) inserted |
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normally? |
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Is the connector of |
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door panel PCB connector inserted |
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normally? |
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| Reinsert the connector. Troubleshoot |
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Is lighting operated | YES | a poor contact. | |
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normally when the exchange of panel
PCB? |
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NO | Panel PCB itself has trouble. |
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1.Check the door wire of freezer – the disconnection of wire, short between wires.
2.Check the CABI wire of freezer – the disconnection of wire, short between wires.
3.Check the panel lighting circuit section within the main PCB for short open.
2)Where the Panel PCB key isn’t selected:
- The basic check way : If you is troubleshooting in the basic check method, then
YES
Is the locking lamp lit on?
NO
NO
Aren’t a key or more buttons
pressed continuously?
Recheck after the release of locking function.
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| YES | Reassemble the PCB ass’y/Enforce | |||||
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Refer to the description of | Is lighting |
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circuit operation in the | operated normally in the exchange |
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manual | of panel |
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and display Circuit |
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selection’s, and measure |
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the wave pattern.(page 40) | Is a periodic |
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| YES |
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| 1. Replace the main PCB. | |
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| 2. Check the short wires of CoolSelect | |
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| 1. Check the door wire of freezer – check the breaking of wire, short between wires. |
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| 2. Check the CABI wire of freezer – check the breaking of wire, short between wires. |
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| 3. Check for Short/Open of the Panel Lighting Circuit section in the main PCB. |
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52
