Sharp CD-MD3000H Service Manual page 35

MD SECTION
Enter the test mode, adjust or set as shown in the following table according to the repair operations.
Checking
Execution item
TEMP
EEPROM
basic
required
setting
Repair
TEMP EEPROM_SET
operations
PICK replacement
HEAD replacement
MECHANISM
replacement
MAIN PWB
1
assembly replacement
MD microcomputer
replacement
MD LSI replacement
1
RF IC replacement
EEPROM IC
1
replacement
1
number to 8 and 9 indicate the order of inplementation.
" – " is an item that you don't have to execute.
Extension Cable
Type
1 Extension PWB for servicing
2 Extension Connector (2 Pin)
3 Extension Cable (6 Pin)
4 Extension Cable (5 Pin)
5 Extension Cable (28 Pin)
From Optical
Pickup Unit
Extension PWB for service
Fit the extension PWB for service to the mechanism
Writing the
AUTO-YOBI
EEPROM
adjustment
setting setting
TEST-CANCEL AUTO–YOBI AUTO–ADJ AUTO–FAB TEST-CANCEL
1 2 3
1 2 3
2 3 4
1
1
2 3 4
2 3 4
The EEPROM writing result is shown at the end of the test mode
OK_EEPROM: "SET" and "YOBI COMPLETE" were written normally
WR_EEPROM: 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.
NG_EEPROM: "SET" could not be written.
Check the connection between the MD microcomputer and the EEPROM.
Part No.
RUNTK0532AFZZ
QCNWK0129AFZZ
QCNWK0130AFZZ
QCNWK0109AFZZ
QCNWK0108AFZZ
From Magnetic Head
(RUNTK0532AFZZ)
Writing the
AUTO- AUTO-FAB
EEPROM
adjustment adjustment
setting
4 5 6
4 5 6
5 6 7
2 3
2 3 4
5 6 7
5 6 7
From mechanism
switch PWB
28Pin extension flat cable
QCNWK0108AFZZ
6Pin extension flat cable
QCNWK0130AFZZ
5Pin extension flat cable
QCNWK0109AFZZ
Figure 35
– 35 –
CD-MD3000H/CD-MD3000W
Operation check
TEST-PLAY TEST-REC
7 8
1
7 8
8 9
4 5
5 6
8 9
8 9
2Pin extension connector
QCNWK0129AFZZ
MD MAIN PWB