Servicing Notes - Sony DVP-CX995V Service Manual

DVP-CX995V
Ver. 1.1
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK 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.
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.
NOTES ON REPLACEMENT OF THE MB BOARD
1. Flash Memory
New part of flash memory (IC202) on the MB board cannot be
used. Therefore, if the mounted MB board (A-1132-163-A) is
replaced, exchange new flash memory with that used before the
replacement.
2. Adjustment
When replacing the mounted MB board (A-1132-163-A), since the
adjustment value is not set up correctly, "Drive Auto Adjustment"
in the Test Mode can't be performed.
In this case, initialize memory in the following procedures.
Procedure:
1. Connect a video monitor to VIDEO LINE OUT jack (J103).
2. Press the [TOP MENU], [CLEAR],
commander (RM-ASP001) in this order with standby status
to enter the Test Mode, then "DIAG START" will be displayed
on the fluorescent indicator tube and the Test Mode Menu
screen will be displayed on the video monitor.
3. Press the [2] key on the remote commander to select the "2.
Drive Manual Operation".
4. Press the [6] key on the remote commander to select the "6.
Memory Check".
5. Press the [CLEAR] key on the remote commander to initialize
the memory.
Note: Refer to page 22 for detail of the Test Mode.
NOTE OF HANDLING THE AV BOARD (Part No. A-
1126-999-A)
When the AV board is replaced by a repair for a fee, throw away the
AV board after obtaining consent of not returning of the AV board
to the customer. When throwing away the AV board, be sure to throw
away after destroying IC600 physically with the hammer etc.
4
SECTION 1

SERVICING NOTES

keys on the remote
I/1