MEX-DV1700U, MEX-DV1707U - Sony Car Audio Service Manual (repair manual). Page 6

•  Distinguish method by Part No. printed on the KEY board

•  Distinguish method by LCD driver IC (IC901) on the KEY 

board

ABOUT  CHANGE  OF  THE  LCD  DRIVER  IC (IC901)  ON  
THE  KEY  BOARD
In this unit, the LCD driver IC (IC901) on the KEY board has been 
changed in the midway of production.
The following changes are performed by this change.

•  Change of the KEY board (suffi x-21) 

(Refer to supplement-1)

•  Change of Part No. of the FRONT PANEL COMPLETE 

ASSY (Refer to page 42)

•  Change of Part No. of the MAIN board 

(Refer to page 41 and 45)

•  Change of part for Ref. No. IC502 on the MAIN board 

(Refer to page 47)

Since all the above-mentioned change is synchronous change, 
there is not compatibility of new type/former type in the front 
panel side and main unit side.
Do the work after necessarily referring to following “New/former 
discrimination”.

Note: When the parts of new front panel and the parts of former 

main unit are combined, this unit does not operate nor-
mally.

New/former discrimination:
Three kinds of following distinguish methods exist.

•  Distinguish method by serial number printed on the model 

number label

Displayed characters/values are example.

Y RANGE:

LAYER

A

A

FM  87.5
AM  530

-

107.9MHz
1710kHz

DC:12V      NEGATIVE GROUND

A

A

MADE IN THAILAND

-DV1700U

4-297-570-01

SERIAL NO.

HECHO EN TAI

T

T LANDIA

CERTIFICATION

A

A

PRODUCT COMPLIES WITH DHHS RULES-21CFR-SUB-
CHAPTER J-APPLICABLE AT

A

A DATE OF MANU

A

A

FAC

F

TURE.

SONY CORPORATION

A

A

1-7-1 Konan, Minato-ku, Tokyo, 108-0075 Japan

MANUFAC

F

TURED:

STT

THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES.

OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS:

(1)THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND

(2)THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED,

INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION.

Manufa

ff ctured under license from Dolby Laboratories.

"Dolby" and the double-D symbol are trademarks of
Dolby Laboratories.

 Serial 

number

Former type

New type

DV1700U: 

US model

1511583

or smaller

1511584

or lager

DV1700U: 

E (PAL) model

1509274

or smaller

1509275

or lager

DV1700U: 

Iranian and 

Nigerian models

1511103

or smaller

1511104

or lager

DV1707U: 

Indian model

1508951

or smaller

1508952

or lager