Panasonic SA-XR55E, Service Manual, Page: 29 / 130

1. Plug the AC adapter to the power source. Press and hold down the [MULTI CONTROL] button and the [SPEAKERS A] button,
and then press the [POWER] button at the same time.
2. The message, [SERVICE] appears on the display for three seconds, and then disappears. Refer to Fig. 9.2.
Fig. 9.2
3. When the [TUNING DOWN] button is pressed, the current program filing number (ex. "M45_***" for MA123_45) appears. The
*** digit indicates the ROM checksum used for ROM collection, and if the unit is not loaded with ROM, "NO" appears.
When the TUNING UP button is pressed, the sub micro computer program filing number (ex. 523_***" for MA678_90) appears.
The *** digit indicates the ROM checksum used for ROM collection, and if the unit is not loaded with ROM, "NO" appears.
9.7. Analog 6.1 CH Output Check Method
When the [SUBWOOFER] button on the remote controller, the function is switched to "Input Inspection Mode", which output analog
input signals at L channel of VCR analog input to all channels.
9.8. Returning to Normal Display
Press the POWER button on the unit to exit the function. The power is turned off.
9.9. Activating Self Diagnosis Function (Doctor Mode)
This mode can be used during servicing.
1. Plug the AC adapter to the power source. Press and hold down the MULTI-SOURCE RE-MASTER button and the SPEAKERS
A button, and then press the POWER button at the same time.
2. Initialize all the setting and set the frequency “99.7MHz” to Tuner.
The message, “_DOCTOR_” appears on the display for three seconds, and then disappears. Refer to Fig. 9.3.
Fig. 9.3
3. Doctor mode function at some remote control codes as below table.
Remote Control Test Mode Function and settings
Selector Sound Mode other settings Vol/Tone
CH 1 TUNER STEREO Frequency : FM min -48dB/0dB
CH 2 TUNER STEREO Frequency : FM max -48dB/0dB
CH 3 TUNER STEREO FM 98.3MHz -18dB/0dB
CH 4 TUNER STEREO Frequency : AM min -48dB/0dB
CH 5 TUNER STEREO Frequency : AM max -48dB/0dB
CH 8 If the input selector is TUNER, auto tuning function is started to upward on current frequency.
CH 9 If the input selector is TUNER, auto tuning function is started to downward on current frequency.
CH 0 All indicators of FL are displayed. All LED are off. Refer to Fig. 9.4.
Note : After this setting, only ‘POWER’ button or ‘Checker Command’ code by the remote control can be entered.
CH UP Check Main µP software version.
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SA-XR55E / SA-XR55EB / SA-XR55EG