![background image](http://html.mh-extra.com/html/sony/hcd-xb88avk/hcd-xb88avk_service-manual_1329765002.webp)
– 2 –
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
Flexible Circuit Board Repairing
• Keep the temperatur e of soldering ir on around 270˚C
during repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
This appliance is classified as
a CLASS 1 LASER product.
The CLASS 1 LASER PROD-
UCT MARKING is located on
the rear exterior.
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
repain 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, ob-
serve 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 waveform is output three times.
SAFETY-RELATED COMPONENT WARNING !!
COMPONENTS IDENTIFIED BY MARK
!
OR DOTTED LINE
WITH MARK
!
ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
MODEL IDENTIFICATION
— BACK PANEL —
4-996-861-1
π
4-996-861-6
π
4-996-861-7
π
4-996-861-9
π
XR88AVK : SP, MY model
XR88AVK : E, IA model
XR88AVK : EA model
XR88K : TH model
PARTS No.
MODEL
• Abbreviation
EA
: Saudi Arabia model
SP
: Singapore model
MY : Malaysia model
TH
: Thai model
IA
: Indonesian model
The following
caution label is
located inside of
the unit.
Parts No.
Содержание HCD-XB88AVK
Страница 4: ... 4 Front Panel 1 7 8 9 º ª 2 3 4 6 º ª º ª º º º ª 5 SECTION 1 GENERAL ª ...
Страница 29: ... 41 42 6 10 SCHEMATIC DIAGRAM MAIN 3 5 SECTION See page 35 for Printed Wiring Board HCD XB88AVK XB88K ...
Страница 30: ... 43 44 6 11 SCHEMATIC DIAGRAM MAIN 4 5 SECTION See page 35 for Printed Wiring Board HCD XB88AVK XB88K ...
Страница 33: ... 49 50 6 14 SCHEMATIC DIAGRAM DECK SECTION See page 81 for IC Block Diagrams HCD XB88AVK XB88K Page 45 Page 45 ...
Страница 35: ... 53 54 6 16 SCHEMATIC DIAGRAM POWER SECTION See page 81 for IC Block Diagrams HCD XB88AVK XB88K ...
Страница 39: ... 61 62 6 20 SCHEMATIC DIAGRAM TC CD PANEL 1 SECTION HCD XB88AVK XB88K Page 55 Page 55 ...
Страница 40: ... 63 64 HCD XB88AVK XB88K 6 21 SCHEMATIC DIAGRAM HP MIC SECTION See page 81 for IC Block Diagrams ...
Страница 43: ... 69 70 6 24 SCHEMATIC DIAGRAM CD MOTOR SECTION See page 81 for IC Block Diagrams HCD XB88AVK XB88K Page 40 ...
Страница 44: ... 71 72 6 25 PRINTED WIRING BOARD TRANS SECTION See page 16 for Circuit Boards Location HCD XB88AVK XB88K ...
Страница 45: ... 73 74 6 26 SCHEMATIC DIAGRAM TRANS SECTION HCD XB88AVK XB88K ...