SD-CX1 (serv.man5). Part 2 - text (Page 12-36) - Sharp Audio Service Manual (repair manual). Page 14

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Enter the test mode, adjust or set as shown in the following table according to the repair operations.

1

Extension PWB for servicing

RUNTK0532AFZZ

2

Extension Connector (2 Pin)

QCNWK0129AFZZ

3

Extension Flat Cable (6 Pin)

QCNWK0130AFZZ

4

Extension Flat Cable (5 Pin)

QCNWK0109AFZZ

5

Extension Flat Cable (28 Pin)

QCNWK0108AFZZ

CN1401

CN1402

CN1101

CN1300

From Magnetic Head
2Pin connector

From Optical
Pickup Unit

Extension PWB for service

(RUNTK0532AFZZ)

Fit the extension PWB for service to the mechanism

From mechanism
switch PWB

2Pin extension connector
QCNWK0129AFZZ

28Pin extension flat cable
QCNWK0108AFZZ

6Pin extension flat cable: QCNWK0130AFZZ

5Pin extension flat cable: QCNWK0109AFZZ

MD MAIN PWB

28Pin 
flexible
PWB

5Pin flat cable

From loading
motor PWB

6Pin flat cable

1

1

1

1

2

5

6

28

Since this CD system has the built-in automatic adjustment function, readjustment is not necessary when replacing the pickup.
Therefore, any combinations of PWB and pickup can be made.
Since automatic adjustment is executed every time the disc is changed, each disc can be played in the most appropriate condition.

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        to      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-

adjustment

AUTO-FAB

adjustment

AUTO–YOBI AUTO–ADJ AUTO–FAB TEST-CANCEL

Writing the

EEPROM

setting

TEST-CANCEL

Writing the

EEPROM

setting

TEST-PLAY

Operation check

TEST-REC

Check the connection between the MD microcomputer and the EEPROM.

1

1

1

1

1

1

1

2

2

2

1

2

2

3

3

3

2

3

3

4

4

4

3

4

4

5

5

5

4

2

5

5

6

6

6

5

3

6

6

7

7

7

8

9

6

5

8

1

8

9

9

9

4

7

7

8

8

8