Sony DVP-CX985V Service Manual ▷ View online
6
DVP-CX985V
SECTION 1
SERVICING NOTES
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 flexible board is easily damaged and should be handled with
care.
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 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 emis-
sion, observe from more than 30 cm away from the objective lens.
on the disc reflective surface by the objective lens in the optical
pick-up block. Therefore, when checking the laser diode emis-
sion, observe from more than 30 cm away from the objective lens.
NOTE OF REPLACING THE MB BOARD
When replacing the MB board, since the adjustment value is not
set up correctly, “Drive Auto Adjustment” can’t be performed.
In this case, initialize Memory in the following procedures.
set up correctly, “Drive Auto Adjustment” can’t be performed.
In this case, initialize Memory in the following procedures.
Procedure:
1. Set the test mode. (See page 23)
2. Press the [2] key of the remote commander, and set the “DRIVE
1. Set the test mode. (See page 23)
2. Press the [2] key of the remote commander, and set the “DRIVE
MANUAL OPERATION”. (See page 29)
3. Press the [6] key of the remote commander, and set the “2-6,
Memory Check”. (See page 32)
4. Press the [CLEAR] key of the remote commander, and initial-
ize Memory.
SETTING OR RELEASING THE FRONT COVER LOCK
Procedure:
1. Press the
1. Press the
I
/1
button to turn the power on.
2. Press two buttons of
x
and [OPEN/CLOSE] on the main unit
for 5 seconds or more.
Note:
The setting method and the releasing method are the same operation.
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
BLOCK OR BASE UNIT
– POWER Board (Conductor Side) –
CN201
13
1
CHECK OF POWER BOARD WITH THE POWER ON
It is possible to analyze the defect with only POWER board power
ON.
Procedure:
1. Set to power OFF state.
2. Remove the connector from CN201 on the POWER board.
3. Short between CN201 pin 1 (P-CONT) and CN201 pin qa
ON.
Procedure:
1. Set to power OFF state.
2. Remove the connector from CN201 on the POWER board.
3. Short between CN201 pin 1 (P-CONT) and CN201 pin qa
(EVER+3.3V) on the POWER board.
4. Turn the power ON.
5. Confirm that the voltage value of CN201 each pin on the
5. Confirm that the voltage value of CN201 each pin on the
POWER board satisfy following value .
CN201 Pin
Voltage Value
pin 2 (EVER–11V)
–11V
pin 3 (SW–11V)
–11V
pin 6, 7 (SW+11V)
+11V
pin 8 (SW+3.3V)
+3.3V
pin qa (EVER+3.3V)
+3.3V
pin qs (SW+5V)
+5V
pin qd (EVER+11V)
+11V
Ver. 1.2
7
DVP-CX985V
AV board
AV board
– Front side –
MB board
cables
(MB board to
driver board,
sensor board)
(MB board to
driver board,
sensor board)
cables
(MB board to
driver board,
sensor board)
(MB board to
driver board,
sensor board)
MB board
AV board
power block
locking wire
saddle
saddle
MB board
It takes care that the cables doesn’t hang down.
cable
(AV board to panel-L board)
(AV board to panel-L board)
cables
(MB board to
driver board,
sensor board)
(MB board to
driver board,
sensor board)
cable
(MB board to
led board)
(MB board to
led board)
ALIGNMENT OF GEAR (CAM) PHASE WITH DOOR
ASS’Y
ASS’Y
CLEANING OF OPTICAL PICK-UP
door assy
gear (cam)
Align a slit of door assy with a marking on
the bottom land of gear tooth when the gear
is rotated fully in arrow direction, as shown.
the bottom land of gear tooth when the gear
is rotated fully in arrow direction, as shown.
optical pick-up
pulley assy
Remove the pulley assy, and
clean the lens of optical pick-up
through this hole.
clean the lens of optical pick-up
through this hole.
NOTE FOR INSTALLATION
8
DVP-CX985V
driver board
cables
cables
When installing the cables, it is made to make it crawl in a chassis.
AV board
AV board
cables
It is made to contact and for there not to be a power block and cables.
power block
MB board
power block
9
DVP-CX985V
SERVICE POSITION
– MB board –
– MB board –
– Optical pick-up block –
MB board (CN102)
Connect the jig (J-2501-086-A) to
MB board (CN102) and
panel-L board (CN1005).
MB board (CN102) and
panel-L board (CN1005).
panel-L board
(CN1005)
(CN1005)
optical pick-up block
(DVBU26)
(DVBU26)
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