CDX-H910UI, CDX-HR910UI - Sony Car Audio Service Manual (repair manual)

2008L04-1

© 

2008.12

Model Name Using Similar Mechanism

CDX-GT930UI/GT937UI/
GT980UI

CD Drive Mechanism Type

MG-101Z-188//Q

Optical Pick-up Name

DAX-25A

•  The tuner and CD sections have no adjustments.

(Photo: CDX-HR910UI)

Signal-to-noise ratio: 120 dB
Frequency response: 10 – 20,000 Hz
Wow and fl utter: Below measurable limit

CDX-H910UI:
FM
Tuning range:
 

87.5 – 108.0 MHz (at 50 kHz step)

 

87.5 – 107.9 MHz (at 200 kHz step)

FM tuning interval:
 

50 kHz/200 kHz switchable

Antenna (aerial) terminal:
 

External antenna (aerial) connector

Intermediate frequency: 150 kHz
Usable sensitivity: 10 dBf
Selectivity: 75 dB at 400 kHz
Signal-to-noise ratio: 70 dB (mono)
Separation: 40 dB at 1 kHz
Frequency response: 20 – 15,000 Hz

AM
Tuning range:
 

531 – 1,602 kHz (at 9 kHz step)

 

530 – 1,710 kHz (at 10 kHz step)

AM tuning interval: 9kHz/10kHz switchable
Antenna (aerial) terminal:
 

External antenna (aerial) connector

Intermediate frequency: 25 kHz
Sensitivity: 26 

μV

CDX-HR910UI:
FM
Tuning range: 87.5 – 108.0 MHz
Antenna (aerial) terminal:
 

External antenna (aerial) connector

Intermediate frequency: 150 kHz
Usable sensitivity: 10 dBf
Selectivity: 75 dB at 400 kHz
Signal-to-noise ratio: 70 dB (mono)
Separation: 40 dB at 1 kHz
Frequency response: 20 – 15,000 Hz

MW/LW
Tuning range:
 

MW: 531 – 1,602 kHz

 

LW: 153 – 279 kHz

Antenna (aerial) terminal:
 

External antenna (aerial) connector

Intermediate frequency: 25 kHz
Sensitivity: MW: 26 

μV, LW: 45 μV

Interface: USB (Full-speed)
Maximum current: 500mA

– Continued on next page –

AUDIO POWER SPECIFICATIONS (CDX-H910UI only)
CEA2006 Standard
Power Output: 17 Watts RMS 

× 4 at 4 Ohms < 1% THD+N

SN Ratio: 82 dBA (reference: 1 Watt into 4 Ohms)

Outputs: Speaker outputs (sure seal connectors)
Speaker impedance: 4 – 8 ohms
Maximum power output: 52 W 

× 4 (at 4 ohms)

Outputs:
 

Audio outputs terminal (front/rear)

 

Subwoofer output terminal (mono)

 

Power antenna (aerial) relay control terminal

 Power 

amplifi er control terminal

Inputs:
 

Remote controller input terminal

 

Antenna (aerial) input terminal

 

Telephone ATT control terminal

 

Illumination control terminal

 

BUS control input terminal

 

BUS audio input terminal

 

AUX input terminal

 

USB signal input terminal

0  OR  DOTTED  LINE  

0  ON  THE  SCHEMATIC  DIAGRAMS  AND  IN  

NOTES  ON  LASER  DIODE  EMISSION  CHECK
The laser beam on this model is concentrated so as to be focused 
on the disc refl ective surface by the objective lens in the optical 
pickup block. Therefore, when checking the laser diode emission, 
observe from more than 30 cm away from the objective lens.

NOTES  ON  CHIP  COMPONENT  REPLACEMENT
• 

Never reuse a disconnected chip component.

• 

Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.

CAUTION
Use of controls or adjustments or performance of procedures 
other than those specifi ed herein may result in hazardous radia-
tion exposure.

If the optical pick-up block is defective, please replace the whole 
optical pick-up block.
Never turn the semi-fi xed resistor located at the side of optical 
pick-up block.

TEST  DISCS
Please use the following test discs for the check on the CD section.

 

YDES-18 (Part No. 3-702-101-01)

 

PATD-012 (Part No. 4-225-203-01)

This label is located on the bottom of the chassis.

Tone controls:
 

Low: ±10 dB at 60 Hz (XPLOD)

 

Mid: ±10 dB at 1 kHz (XPLOD)

 

High: ±10 dB at 10 kHz (XPLOD)

Power requirements: 12 V DC boat battery
 

(negative ground (earth))

Dimensions: Approx. 197 

× 89 × 187 mm

 (7

 7/8

 

× 3

 5/8

 

× 7

 3/8

 in) (w/h/d)

Mounting dimensions: Approx. 181 × 52 × 144 mm
 (7

 1/4

 

× 2

 1/8

 

× 5

 3/4

 in) (w/h/d)

Mass: Approx. 1.8 kg (4 lb)
Supplied accessories:
 

Card remote commander: RM-X151

 

Parts for installation and connections (1 set)

The laser diode in the optical pick-up block may suffer electrostat-
ic 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.

0  SUR  

  .............................................   4

 

Location of Controls (CDX-H910UI) .............................   5

 

Location of Controls (CDX-HR910UI) ..........................   6

 

Connection Example (CDX-H910UI) ............................   7

 

Connection Example (CDX-HR910UI) ..........................   7

 Connections 

(CDX-H910UI) 

..........................................  

8

 Connections 

(CDX-HR910UI) 

.......................................  

9

3-1.  Front Panel Overall Assy  ...............................................   10
3-2.  Sub Panel Section  ..........................................................   11
3-3.   CD Mechanism Block .....................................................   11
3-4. Main 

Board 

.....................................................................  12

3-5. Servo 

Board 

....................................................................  12

3-6. Chassis 

(T) 

Sub 

Assy 

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

3-7.  Roller Arm Assy ..............................................................   13
3-8. Chassis 

(OP) 

Assy 

...........................................................  14

3-9. Chucking 

Arm 

Sub 

Assy 

.................................................  14

3-10. Sled Motor Assy ..............................................................   15
3-11.  Optical Pick-up Section ..................................................   16
3-12. Optical Pick-up ...............................................................   16

4-1.  Block Diagram –Main Section– .....................................   18
4-2.  Block Diagram –Display Section– .................................   19
4-3.  Printed Wiring Board –Main Section– ............................   20
4-4.  Schematic Diagram –Main Section (1/3)– ......................   21
4-5.  Schematic Diagram –Main Section (2/3)– ......................   22
4-6.  Schematic Diagram –Main Section (3/3)– ......................   23
4-7.  Printed Wiring Board –Sub Section– ..............................   24
4-8.  Schematic Diagram –Sub Section– .................................   25

5-1.  Front Panel Section .........................................................   31
5-2. Sub 

Panel 

Section 

...........................................................  32

5-3. Main 

Section 

...................................................................  33

5-4.  CD Mechanism Section (MG-101Z-188//Q) ..................   34

  ..............................   35

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.

PLAYABLE  DISCS  ON  THIS  UNIT
This unit can play CD-DA (also containing CD TEXT) and CD-
R/CD-RW (MP3/WMA/AAC fi les).

CD-DA

MP3

WMA

AAC

EXTENSION  CABLE  AND  SERVICE  POSITION
When repairing or servicing this set, connect the jig (extension 
cable) as shown below.

•  Connect the MAIN board (CN201) and the SERVO board 

(CN401) with the extension cable (Part No. J-2502-076-1).

NOTE  FOR  REPLACEMENT  OF  THE  SERVO  BOARD
When repairing, the complete SERVO board (Part No. A-1554-
409-A) should be replaced since any parts in the SERVO board 
cannot be repaired.

NOTE  FOR  REPAIRING  THE  FRONT  PANEL
The front panel should never be disassembled since it is water-
proof fi nished.
Replace the front panel overall assembly completely when replac-
ing the key board or other components of the front panel.