Panasonic RX-ES29GS, Service Manual

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14 Self Diagnostic Function
14.1. Self-diagnosis Function
14.1.1. Entering into self-diagnosis mode
1. Ensure there is no cassette tape in the deck unit.
2. Switch to CD function.
3. Press and hold the [CD/TAPE STOP
n ] key of the main set for more than 2 seconds. While pressing this key, press the FF key
on the main set for another 2 seconds to enter into the Self-Diagnosis mode.
Note:
Even if [CD/TAPE STOP n ] key of the main set is pressed while the self diagnosis mode is on, function will not be switched.
Instead, confirmation of error numbers will begin.
14.1.2. Display Location
Figure 14-1
14.1.3. Error Code Display
·
At the self-diagnosis mode, error codes will be displayed when [TAPE/CD STOP
n
] key at the main unit is pressed.
Note:
Error numbers display is due to error symptom encountered during normal operation of unit. These error codes will be
“remembered” and stored.
· Example: [T......H01] (the display shall be retained)
· To exit from the self-diagnosis mode, execute power OFF operation.
·
Even at power OFF operation, this error numbers shall not be cleared (the number can be cleared only at the start up of micro-
p after reset).
· If repeating self-diagnosis, add the newly detected errors only without deleting errors which have been detected before.
14.1.4. Error Code Table
Error code Possible symptom Description of problem
U01 Batteryflat · During operation, when PDET switches to OFF (PDET - 1.534V) due to fall of power supply voltage
fall, the power supply will be automatically switched OFF.
·
If REM_STBY = L, VCCDET = L the system shall be judged to have low battery and [......UO1] shall
be displayed for 10 seconds.
·
To check REM_STBY and VCCDET, chattering check will be read-in twice 1 sec after PCONT is set
to L.
· In case of power ON operation, after PCONT is set to ‘H’, power supply shall be checked using
PDET input. If the battery is flat (PDET - 1.534V), power supply OFF process will be executed and
error number [......UO1] will be displayed for 5 seconds. This error number will not be memorized.
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RX-ES29GC / RX-ES29GS / RX-ES29GT