Sharp CP-M1, Service Manual

Page: 18 / 92

MD-M3/M1
– 18 –
1. Preparation for adjustment
Test disc
MD SECTION
Type
Test disc
Part No.
1 High reflection disc TGYS1 (SONY) [for Playback] RRCDT0101AFZZ
2 Low reflection disc Recording minidisc ––––––––––––
SONY 80 minutes disk is recommended.(example:PRISM 80)
3 Head Adjusting transparent RRCDT0103AFZZ
4 Low reflection disc Pre-adjustment disc [TEAC Test MD] 88GMMD-213A
When the combination of mechanism/pickup and PWB was changed , set the TEST mode to perform the AUTO preliminary
adjustment and AUTO adjustment, write the adjustment data in EEPROM.
When EEPROM was replaced, set the TEST mode, write the EEPROM set data (p23,p24) and then perform the preliminary
adjustment and AUTO adjustment, write adjustment data in EEPROM.
Extension Cable (See Fig. 24)
Type
1 Extension PWB for servicing RUNTK0457AFZZ
2 Extension Connector (2 Pin) QCNWK0059AFZZ
3 Extension Connector (6 Pin) QCNWK0107AFZZ
4 Extension Cable (5 Pin) QCNWK0109AFZZ
5 Extension Cable (28 Pin) QCNWK0108AFZZ
Part No.
PICK replacement
HEAD replacement
MECHANISM
replacement
MAIN PWB
assembly replacement
MD microcomputer
replacement
MD LSI replacement
RF IC replacement
EEPROM IC
replacement
TEMP
basic setting
TEMP
Execution item
required
Repair
operations
number , , , , and
" – " is an item that you don't have to execute.
The EEPROM writing result is shown at the end of the test mode
Although "SET" was written normally, it was not written
in the "YOBI COMPLETE" state.
Peform "AUTO-YOBI" adjustment.
After making a normal adjustment, write the preliminary
adjustment into the EEPROM.
OK_EEPROM: "SET" and "YOBI COMPLETE" were written normally
WR_EEPROM:
NG_EEPROM: "SET" could not be written.
indicate the order of inplementation.
Checking
EEPROM setting
EEPROM_SET
AUTO-YOBI
adjustment
AUTO–YOBI
Writing the
EEPROM setting
TEST-PLAY
Operation check
TEST-REC
Check the connection between the MD microcomputer
and the EEPROM.