Sony DAV-DX315 / HCD-DX315 Service Manual ▷ View online
5
HCD-DX315
SECTION 1
SERVICING NOTE
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
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 flexible board is easily damaged and should be handled with
care.
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 flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
LASER DIODE AND FOCUS SEARCH
1. Open the cover and turn POWER on with no disc inserted.
2. Confirm that the following operation is performed while
2. Confirm that the following operation is performed while
observing the objecting lens.
1)
1)
Confirm that laser beam is spread.
2)
Up and down motion of the objective lens. (3 times)
DISC TRAY LOCK
The disc tray lock function for the antitheft of an demonstration
disc in the store is equipped.
disc in the store is equipped.
Setting Procedure :
1. Press the ?/1 button to turn the set on.
2. Press the [FUNCTION] button to set DVD function.
3. Insert a disc.
4. Press the
2. Press the [FUNCTION] button to set DVD function.
3. Insert a disc.
4. Press the
x
button and the
A
button simultaneously for five
seconds.
5. The message “LOCKED” is displayed and the tray is locked.
Releasing Procedure :
1. Press the
x
button and the
A
button simultaneously for five
seconds again.
2. The message “UNLOCKED” is displayed and the tray is
unlocked.
Note:
When “LOCKED” is displayed, the tray lock is not released by
turning power on/off with the ?/1 button.
turning power on/off with the ?/1 button.
Note on MAIN board replacement
New part of EEP ROM (IC1103) on the MAIN board cannot be used.
Therefore, if the mounted MAIN board (A-1179-147-A) is replaced,
Therefore, if the mounted MAIN board (A-1179-147-A) is replaced,
exchange new EEP ROM (IC1103) with that used before the replacement.
When the self-diagnosis function is activated to
prevent the system from malfunctioning, a 5-
character service number (e.g., C 13 50) with a
combination of a letter and 4 digits appears on
the screen and the front panel display. In this
case, check the following table.
prevent the system from malfunctioning, a 5-
character service number (e.g., C 13 50) with a
combination of a letter and 4 digits appears on
the screen and the front panel display. In this
case, check the following table.
When displaying the version
number on the screen
number on the screen
When you turn on the system, the version
number [VER.X.XX] (X is a number) may
appear on the screen. Although this is not a
malfunction and for Sony service use only,
normal system operation will not be possible.
Turn off the system, and then turn on the system
again to operate.
number [VER.X.XX] (X is a number) may
appear on the screen. Although this is not a
malfunction and for Sony service use only,
normal system operation will not be possible.
Turn off the system, and then turn on the system
again to operate.
Self-diagnosis Function
(When letters/numbers appear in the
display)
display)
First 3
characters of
the service
number
characters of
the service
number
Cause and/or corrective action
C 13
The disc is dirty.
,Clean the disc with a soft cloth
C 31
The disc is not inserted correctly.
,Restart the system, then re-insert
the disc correctly.
E XX
(xx is a number)
To prevent a malfunction, the
system has performed the self-
diagnosis function.
system has performed the self-
diagnosis function.
,Contact your nearest Sony
dealer or local authorized Sony
service facility and give the 5-
character service number.
service facility and give the 5-
character service number.
Example: E 61 10
C:13:50
VER.X.XX
6
HCD-DX315
CN3002
MAIN BOARD
POWER BOARD
CN902
RED
BLACK
C903
C939
C933
C932
Discharge the charged electricity in capacitors to prevent electric shock as follows
When disassembling the machine, be sure to discharge the charged electricity in the following capacitors.
Use a resistor of 800 ohms, 2 Watts for discharging the following capacitors.
Use a resistor of 800 ohms, 2 Watts for discharging the following capacitors.
POWER board
C903 : 600V
C932, C933, C939, CN902 : 30V
C903 : 600V
C932, C933, C939, CN902 : 30V
MAIN board
CN3002 : 30 V
CN3002 : 30 V
(Parts face side)
(Parts face side)
*
Connect the specified resistor
between black and red leads
gear
tweezers
1
Insert tip of tweezers through the hole
of bottom plate, and roate the gear in
the counter-clockwise direction.
the counter-clockwise direction.
DVD lid
tape
2
Attach an adhesive tape on the DVD LID and draw it out.
HOW TO OPEN THE DISC TABLE WHEN POWER SWITCH TURNS OFF
7
HCD-DX315
Fix the capacitors with adhesive agent as follows
Fixing the capacitors with adhesive agent is required by the safety regulation.
Be sure to fix the capacitors with adhesive agent when part or circuit board is replaced.
Be sure to fix the capacitors with adhesive agent when part or circuit board is replaced.
POWER BOARD
C910
C924
IC921
C930
PRECAUTION WHEN INSTALLING A NEW OP UNIT /
PRECAUTION BEFORE UNSOLDERING THE STATIC ELECTRICITY
PREVENTION SOLDER BRIDGE
PRECAUTION BEFORE UNSOLDERING THE STATIC ELECTRICITY
PREVENTION SOLDER BRIDGE
When installing a new OP unit, be sure to connect the flexible
printed circuit board first of all before removing the static electricity
prevention solder bridge by unsoldering. Remove the static electricity
prevention solder bridge by unsoldering after the flexible printed
circuit board has already been connected.
(Do not remove nor unsolder the solder bridge
as long as the OP unit is kept standalone.)
printed circuit board first of all before removing the static electricity
prevention solder bridge by unsoldering. Remove the static electricity
prevention solder bridge by unsoldering after the flexible printed
circuit board has already been connected.
(Do not remove nor unsolder the solder bridge
as long as the OP unit is kept standalone.)
8
HCD-DX315
MAIN BOARD
POWER BOARD
Precaution on the connector processing of the POWER board.
(Parts face side)
(Parts face side)
AC IN
1
3
1
12
After twist the harness once,
install the connector.
install the connector.
POWER board
MAIN board
IC504
CN506
CN3002
CN3001
CN902
CN901
CN904
IC941
IC942
IC943
When re-assembling, leave 30 mm between
harnesses A and B for safety.
harnesses A and B for safety.
harnesses A
harnesses B
clamp
30mm
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