Servicing Notes - Sony SCD-1/777ES Service Manual

NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
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.
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.
MODEL IDENTIFICATION
– Back Panel –
Model
SCD-1: US, Canadian
SCD-1: AEP
SCD-777ES: AEP
SCD-777ES: US, Canadian
SERVICE POSITION
In checking the BU section, prepare two new jigs (extension cable J-2501-164-A: 1.00 mm 26 cores).
insulator
SECTION 3

SERVICING NOTES

Part No.
Part No.
4-215-784-1s
4-215-784-2s
4-221-854-0s
4-221-854-1s
OP mechanism section (BU-23)
connect two jigs (extension cable J-2501-164-A) to the RF board
(CN001, 002) and Main board (CN501, 502).
CHECKING METHOD OF MICROCOMPUTER ROM
VERSION
1. Set the CD1/CD2 switch on the remote commander to CD1.
2. With the power turned on, press the [CHECK] button on the
remote commander while pressing the [TEXT] button on the
set.
3. 15-digit numeric value will be displayed, and the top 4 digits
(left side) of the numeric value imply the microcomputer ROM
version.
Example: If "200006100FFFF3C" is displayed, the ROM ver-
sion is 2.000.
4. To cancel the ROM version check mode, press the [CHECK]
button on the remote commander while pressing the [TEXT]
button on the set.
DISPLAY OF TOC ERROR
Display
TOC ERROR Illegal SACD disc (pirate edition)
****
TOC ERROR Not SACD (DVD disc etc.)
*
Any board to put
Contents
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