Servicing Notes - Sony HCD-DV2D Service Manual

HCD-DV2D
Ver. 1.2
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.
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
Carry out the "S curve check" in "CD section adjustment" and check
that the S curve waveforms is output three times.
DISC TRAY LOCK
The disc tray lock function for the antitheft of an demonstration
disc in the store is equipped.
Procedure :
1. Press the ?/1 button to turn the set ON.
2. Press the DVD u button to select "DVD"
3. Set disc on the tray, press the x button and the Z button
simultaneously for five seconds.
4. The message "LOCKED" is displayed the tray is locked.
5. To release from this mode, press the x button and the Z
button simultaneously for five seconds again.
6. The message "UNLOCKED" is displayed and the tray is
unlocked.
Note: When "LOCKED" is displayed, the slot lock is not released by
turning power on/off with the ?/1 button.
• SERVICE POSITION OF THE TAPE CASSETTE MECHANISM DECK
4
SECTION 1

SERVICING NOTES

MAIN board
MODEL IDENTIFICATION
– Back Panel –
Model
US, CND models 120 V AC, 60 Hz
AEP, UK, RU models 230 V AC, 50/60 Hz
SP, E2, E3, E51 models 110 – 120 V/220 – 240V AC, 50/60 Hz
TW model 120 V AC, 50/60 Hz
KR model 220 V AC, 60 Hz
AUS model 230 – 240 V AC, 50/60 Hz
• Abbreviation
AUS : Australian model.
CND : Canadian model.
E2 : 120 V AC area in E model.
E3 : 240 V AC area in E model.
E51 : Chilean and Peruvian model.
KR : Korea model.
RU : Russian model.
SP : Singapore model.
TW : Taiwan model.
Tape Cassette Mechanism Deck
(CMAL5Z220C)
Power requirement
indication
Power Voltage Indication
Front Panel