MEX-DV1700U, MEX-DV1707U - Sony Car Audio Service Manual (repair manual). Page 3

  .............................................   3

  ..................................................................   7

3-1. Disassembly 

Flow 

...........................................................   9

3-2.   Sub Panel Complete Assy ...............................................   9
3-3.   DVD Mechanism Deck (MG-613XI-187) ......................   10
3-4.   DC Fan (25X25) (M801), MAIN Board .........................   10
3-5.  DVD Mechanism Deck Block ........................................   11
3-6. SERVO 

Board 

.................................................................  11

3-7.  Chassis (T612Z) Sub Assy, SENSOR Board ..................   12
3-8.  Chassis (OP, ZA) Complete Assy ...................................   12

  ..........................................   13

5-1.  Block Diagram - SERVO Section - ................................   15
5-2.  Block Diagram - MAIN Section - ...................................   16
5-3. Block 

Diagram 

- PANEL, POWER SUPPLY Section - ...........................   17

5-4.  Printed Wiring Boards - SERVO Section - .....................   19
5-5.  Schematic Diagram - SERVO Section (1/3) - .................   20
5-6.  Schematic Diagram - SERVO Section (2/3) - .................   21
5-7.  Schematic Diagram - SERVO Section (3/3) - .................   22
5-8.  Schematic Diagram - MAIN Board (1/3) - .....................   23
5-9.  Schematic Diagram - MAIN Board (2/3) - .....................   24
5-10.  Schematic Diagram - MAIN Board (3/3) - .....................   25
5-11. Printed Wiring Board 
 

- MAIN Board (Component Side) - ................................   26

5-12. Printed Wiring Board 
 

- MAIN Board (Conductor Side) - ..................................   27

5-13.  Printed Wiring Board - KEY Board -..............................   28
5-14.  Schematic Diagram - KEY Board - ................................   29

6-1. Main 

Section 

...................................................................  41

6-2.  Front Panel Section .........................................................   42
6-3.  DVD Mechanism Deck Section (MG-613XI-187) .........   43

  ..............................   44

Accessories are given in the last of the electrical parts list.

The laser diode in the optical pick-up block may suffer electro-
static break-down because of the potential difference generated by 
the charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also 
use the procedure in the printed matter which is included in the 
repair parts.
The fl exible board is easily damaged and should be handled with 
care.

UNLEADED  SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution:  Some printed circuit boards may not come printed with 

the lead free mark due to their particular size)

Unleaded solder has the following characteristics.
•  Unleaded solder melts at a temperature about 40 °C higher 

than ordinary solder.

 

Ordinary soldering irons can be used but the iron tip has to be 
applied to the solder joint for a slightly longer time.

 

Soldering irons using a temperature regulator should be set to 
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if 

the heated tip is applied for too long, so be careful!

• Strong 

viscosity

 

Unleaded solder is more viscous (sticky, less prone to fl ow) 
than ordinary solder so use caution not to let solder bridges 
occur such as on IC pins, etc.

•  Usable with ordinary solder
 

It is best to use only unleaded solder but unleaded solder may 
also be added to ordinary solder.

NOTE  THE  IC4  AND  IC11  ON  THE  SERVO  BOARD  
REPLACING
IC4 and IC11 on the SERVO board cannot exchange with single. 
When these parts are damaged, exchange the complete mounted 
board.

NOTE  THE  CN101  AND  IC602  ON  THE  MAIN  BOARD  
REPLACING
CN101 and IC602 on the MAIN board cannot exchange with 
single. When these parts are damaged, exchange the complete 
mounted board.

The unit may  not function properly if the 
connectors between the unit and the front 
panel are not clean. In order to prevent this, 
detach the front panel (page 12) and clean the 
connectors with a cotton swab. Do not apply 
too much force. Otherwise, the connectors 
may be damaged.

t For safety, turn off the ignition before cleaning 

the connectors, and remove the key from the 
ignition switch.

t Never touch the connectors directly with your 

fingers or with any metal device.