Panasonic SA-PM53E Service Manual page 19

Step 2: Check for firmware version & EEPROM checksum.
· When entering into DOCTOR MODE the firmware version & checksum of EEPROM (if applicable) will appear on FL display.
Below is information on the EEPROM IC (Rom correction) under 3 examples:
1. When EEPROM IC is detected and there is no ROM correction:
2. When EEPROM IC is detected and has ROM correction:
3. When EEPROM IC is detected and has ROM correction but NG:
Note: Micro-processor firmware version refers to version No. (Eg.MS079_12) for micro-processor IC.
It is subject to change which would update accordingly.
· Rom correction checksum refers to the hex code that is display upon key buttons pressed if an EEPROM is loaded in the unit.
(Main P.C.B)
8.1.4. CD to Tape Recording Inspection
Purpose : To check the recording function from CD to Tape.
Below is the procedures for this mode.
Step 1: Enter into Doctor mode (For more information refer to section 8.1 on key operation to enter into this mode).
Step 2 : Use CDT-018 (Ensure TOC is completed) to CD unit before proceeding.
Step 5 : Press [5] button on remote control. Enter into CD to Tape Test mode. (During this mode, volume is set to [VOLUME 50],
Bass & Treble is set to 0dB & H.BASS is switch off).
Note : When in CD to Tape Recording Test mode, the following process is perform :
a) Deck will rewind to start point (point at the start of recording) & Stop. During rewinding of Tape, CD tray (selected) remains open.
b) Recording begins (at constant analogue recording speed) for 3 seconds & Stop. During this time, track 1 is access (-10dB,
400HZ)
· However, "Error" would be display if there is no tracks to access to, no tape inserted, no test CD inserted or when the tape
erasure prevention tab for FWD side is not suitable for recording.
· When in this mode, if
8.1.5. Tape Recording and Playing
Assuming the recording to TAPE has been done in test 3, only playing TAPE is made.
Purpose : To check the Tape function.
Below is the procedures for this mode.
Step 1: Enter into Doctor mode (For more information refer to section 8.1 on key operation to enter into this mode).
Step 2 : Press [6] button on remote control. Enter into Tape recording Test mode. (During this mode, Tape function is set to
automatically, volume is set to [VOLUME 50], Bass & Treble is set to 0dB & H.BASS is switch off).
Step 3 : FWD play is made for 3 seconds after setting the above-mentioned, TAPE is stopped 3 seconds later. Tape should open
button is pressed the process will stops automatically.
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SA-PM53E / SA-PM53EB / SA-PM53EG