Sharp MD-MT877S Service Manual page 18

MD-MT877/MD-MT877C
Do the following when replacing the mechanism, the pickup, the
EEPROM (IC402), the LSI(IC201) or the main PWB unit.
Enter the test mode, move the pickup to the most internal periphery and execute AUTO1.
(Use the disc of MMD-213A.)
If you replaced EEPROM, set the EEPROM valume to the final version.
Test Mode Start · Completion methool
• Starting method of the test mode
When the unit is in the stand-by state (with no display), the test mode is started by performing
the following operation using the remote control.
Press the [PLAY] button while pressing the [PLAY-MODE] button, and release the [PLAY-MODE] button
while keeping the [PLAY] button pressed, and press the [VOLUME–] button.
Indication after the start :
• How to cancel the test mode
A U T O 1
PLAY
A T 1
Normality completion
A D J . O K
PLAY
A T 2
Normality completion
A D J . O K
Remote controller P-MODE button
The indication of RAMDOM
STOP is pushed
The indication of "TEST"
Move the pickup to the most internal periphery and press the BASS button
AUTO2 It is made to carry it out
PLAY
A D J . O K
PLAY
A P # # # #
STOP is pushed
B Y E O K
Indication disappears
All the supply of the power supply is turned off
T E S T
Volume+
Volume -
All the lighting : LCD all the lighting two seconds
T E S T
STOP
B Y E
B Y E O K
POWER OFF
(During the spare style automatic adjustment)
(During the adjustment that ATT is automatic)
(During the focus balance adjustment)
(Adjustment completion)
(Fast Forward Button)
(Continuance is regenerating)
It confirms that an address proceeds
(In such cases as the battery)
: To the test mode stop ([Test mode menu])
Performance mode
Playback volume
LINE REC volume
Microphone REC volume
Resume setting
: Version indication 2 seconds
EEPROM version
Destination
Program version
: Test mode stop
: [OK] or [NG]
Check the microcomputer RAM and EEPROM with
the contents of the preliminary adjustment.
Pickup position initialisation
EEPROM contents renewal
– 18 –
=Normal
=28
=30
=20
=Cancellation