Panasonic SA-PM21PC Service Manual page 33

2. Press and hold [STOPn] button for at least 2 seconds, follow by [4] and [7] from the remote control.
3. When the Doctor Mode is activated the FL display will show the
version number (base 10) and EEPROM's checksum (base 16) will be displayed for 1 sec. After displaying the EEPROM
information for 1 sec, the display will return to the normal Doctor mode display
4. However, if the EEPROM was not detected, it will not display the EEPROM's checksum information. The FL will display micro-
p's version for 1 sec and return to normal Doctor Mode display.
Note:
Within the Doctor Mode display, at any of the test modes, if input [4] and [7] from the remote control while press [STOPn] of
main set, the micro-p's version number and EEPROM information will be displayed for 1 sec and then returned to the normal
doctor mode display.
12.4.1. Inspection item list
Test Number
1 CD Unit Loading Test
2 CD Unit Traverse Test
3 CD Unit Combination Test
4 EEPROM Checksum Check
5 Cold Start Setting
Note:
· If entering Doctor Mode by numeric buttons, PRESET EQ and SURROUND will be set to OFF.
· In case of error, all the segments of FL will blink (0.5 sec ON/OFF) and Doctor Mode shall be retained.
· The operation key used for the test follows closely with the test items as far as possible to facilitate quick testing to be
carried out.
· The [STOPn] key on the remote controller when used in any test mode will end the current test operations.
· All keys mentioned to initiate Doctor Mode's test items refer to remote controller keys, unless otherwise mentioned.
· When plugging out from Doctor Mode and then plugging in back. It will reset start.
· The test cancellation special key [0] will end the current test operations but it will remain in Doctor Mode. When used, the
display shows the word [CANCEL] for 2sec, and then returns to Doctor Mode display.
12.4.2. CD Unit Loading Test (Reliability test 1)
· Putpose : To test CD Unit Loading (OPEN / CLOSE aging test) function.
− The following operation will be carried out.
· Procedures :
1. Enter into doctor mode (Refer to section 12.4)
2. Press [ 10] followed by [1] & [1] on the remote control.
symbol at the 5
Test Item
33
th
digit. At the same time, the micro-p's
Operation keys (Remote Controller Keys)
[ 10], [1], [1]
[ 10], [1], [2]
[ 10], [1], [2]
[DOCTOR MODE] (C2DF) ; [4] + [7]
[SLEEP]
SA-PM21PC