Read Panasonic SA-PM23P / SA-PM23PC Service Manual online
Item
FL Display
Key Operation
Mode Name
Description
Front Key
Traverse Test
To
determine
the
reliability of CD unit.
In doctor Mode:
1.
1.
Press [
], [1], [2] button on remote
control.
To exit, press
button on main
unit or remote control.
TPS
To check FF TPS for
deck.
(For more information,
refer to section 8.1.5)
deck.
(For more information,
refer to section 8.1.5)
In doctor mode:
1.
1.
Press [
] button on remote
control.
To exit, press
button on main
unit or remote control.
Cold Start
To activate cold start ipon
next AC power up.
next AC power up.
In doctor mode:
1.
1.
Press [SLEEP] button on remote control.
To exit, press
button on main
unit or remote control.
8.1.1. Cassette Mechanism Self-Diagnostic Mode
Below is information of the checking of cassette deck mechanism
No.
Operation Procedures
Micon operation & processing
1
C-mecha Abnormal Detection shall be
executed for DECK.
executed for DECK.
Check that all DECK mechanism leaf SW is in OFF state.
2
[
] key is pressed, after loading in a
NORMAL type cassette with the recording tab
on the left side removed.
on the left side removed.
FF shall be executed for 2 sec, after which STOP.
Check the following.
{ F.REC INH SW } is OFF
{ HALF SW } is ON
Reel pulse toggles between H & L.
Check the following.
{ F.REC INH SW } is OFF
{ HALF SW } is ON
Reel pulse toggles between H & L.
3
[
] key is pressed, after loading a
NORMAL, CrO2, METAL type cassette with
the recording tab on the right side removed.
the recording tab on the right side removed.
REW shall be executed for 2 sec, after which STOP.
Check the following.
{ F.REC INH SW } is ON
{ HALF SW } is ON
Reel pulse toggles between H & L.
Check the following.
{ F.REC INH SW } is ON
{ HALF SW } is ON
Reel pulse toggles between H & L.
4
[TAPE
] Key is pressed, after loading in a
NORMAL, CrO2, METAL type cassette (
cassette for TPS checking purposes and with
both recording tabs intact ).
cassette for TPS checking purposes and with
both recording tabs intact ).
TPS operation is executed. Check the following.
{ F.REC INH SW } is ON
{ HALF SW } is ON
TPS signal changes.
After checking TPS, it shall STOP.
If TPS checking is completed at TAPE END, it is considered as TPS
abnormal.
{ F.REC INH SW } is ON
{ HALF SW } is ON
TPS signal changes.
After checking TPS, it shall STOP.
If TPS checking is completed at TAPE END, it is considered as TPS
abnormal.
5
[REC] key is pressed, after loading in a
NORMAL type cassette ( with both recording
tabs intact )
NORMAL type cassette ( with both recording
tabs intact )
REC operation shall not be executed.
Check the following.
{ F.REC INH SW } is ON
{ HALF SW } is ON
Check the following.
{ F.REC INH SW } is ON
{ HALF SW } is ON
6
Self-diagnostic mode is stopped by pressing
the [n] Key.
the [n] Key.
LCD shall display the abnormality item code, when the STOP key is pressed,
it shall display the abnormality item code in the following sequence.
[ TEST H 0 1] [ TEST H 0 2] [ TEST H 0 3]
it shall display the abnormality item code in the following sequence.
[ TEST H 0 1] [ TEST H 0 2] [ TEST H 0 3]
7
To clear all the abnormalities in the memory,
press the [n] Key for more than 5 Sec while
the self-diagnostic mode is stopped.
press the [n] Key for more than 5 Sec while
the self-diagnostic mode is stopped.
At this time, all the abnormalities item in the memory is cleared and is
displayed on the LCD.[ C L E A R ] display for 1 Sec. then,[ TEST ] is
displayed.
displayed on the LCD.[ C L E A R ] display for 1 Sec. then,[ TEST ] is
displayed.
8
To cancel the self-diagnostic mode press the
Key.
POWER is OFF.At the next POWER ON, normal operation shall be executed.
· If RAM check error occurs during microcomputer reset, COLDSTART shall be executed and all the error memory shall be
cleared during RAM initialization.
8.1.2. EEPROM Checksum (ROM correction)
Purpose : To check for micro-processor firmware version & EEPROM check (ROM correction).
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: 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 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: 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:
14
SA-PM23P / SA-PM23PC
Click on the first or last page to see other SA-PM23P / SA-PM23PC service manuals if exist.