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MCE-F88K
E Model
SPECIFICATIONS
SERVICE MANUAL
VIDEO CD PLAYER
Model Name Using Similar Mechanism
MCE-F11
CD Mechanism Type
CDM14-5BD24
Base Unit Type
BU-5BD24
Optical Pick-up Type
KSS-213B/S-N


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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.
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.
PARTS No.
MODEL
4-900-307-0s
Malaysia, Singapore, Hong Kong model
4-900-307-1s
Thai model
4-900-307-3s
Soudi Arabia model
MODEL IDENTIFICATION
-- BACK PANEL --
TABLE OF CONTENTS
1. SERVICING NOTE .......................................................... 3
2. GENERAL .......................................................................... 4
3. DISASSEMBLY
3-1. Front Panel ......................................................................... 12
3-2. Base Unit (BU-5BD24) ....................................................... 12
4. TEST MODE ..................................................................... 13
5. ELECTRICAL BLOCK CHECKING ........................ 15
6. DIAGRAMS
6-1. Circuit Boards Location ...................................................... 17
6-2. Block Diagrams
· CD Section ........................................................................ 18
· Main Section ..................................................................... 19
· Video Section .................................................................... 20
6-3. Schematic Diagram ­ CD Section ­ ................................... 22
6-4. Printed Wiring Board ­ CD Section ­ ................................. 23
6-5. Schematic Diagram ­ Main Section ­ ................................ 24
6-6. Printed Wiring Board ­ Main Section ­ .............................. 25
6-7. Printed Wiring Board ­ Video Section ­ ............................. 26
6-8. Schematic Diagram ­ Video (1/3) Section ­ ....................... 27
6-9. Schematic Diagram ­ Video (2/3) Section ­ ....................... 28
6-10. Schematic Diagram ­ Video (3/3) Section ­ ..................... 29
6-11. Schematic Diagram ­ Display Section ­ ........................... 30
6-12. Printed Wiring Board ­ Display Section ­ ........................ 31
6-13. Schematic Diagram ­ Mic Section ­ ................................. 32
6-14. Printed Wiring Board ­ Mic Section ­ .............................. 33
6-15. Schematic Diagram ­ Trans Section ­ .............................. 34
6-16. Printed Wiring Board ­ Trans Section ­ ........................... 35
6-17. IC Block Diagrams ............................................................ 36
6-18. IC Pin Functions ................................................................ 38
7. EXPLODED VIEWS
7-1. Case Section ........................................................................ 43
7-2. Front Panel Section ............................................................. 44
7-3. Mechanism Deck Section (CDM14-5BD24) ...................... 45
7-4. Base Unit Section (BU-5BD24) .......................................... 46
8. ELECTRICAL PARTS LIST ........................................ 47
SAFETY-RELATED COMPONENT WARNING !!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE
WITH MARK 0 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.
Parts No.


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SELF DIAGNOSIS
This unit is equipped with a self-diagnosis function for diagnosing
the state of the circuits in the VIDEO board.
The function is useful for determining if the circuitis normal or
abnormal according to the Ilt state of D502 of the VIDEO board.
Lighting of D502
When lit :
Operates normally
When Blinking repeatedly: The circuit may be faulty.
[VIDEO BOARD] (SIDE A)
SECTION 1
SERVICING NOTE
NOTES ON HANDLINGTHE OPTICAL PICK-UP BLOCK
OR BASE UNIT
The laser diode in the optical pick-up block may suffer
electrostatic breakdown because of the potential difference
generated by the charged electrostatic load, etc. on clothing and
the human body.
During repair, pay attention to electrostatic breakdown 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 waveform is output two times.
HOW TO OPEN THE DISC TRAY WHEN POWER SWITCH
TURNS OFF
Insert a tapering driver into the aperture of the unit bottom, and turn
in the direction of arrow.
* To close the disc table, turn the driver in the reverse direction.
Pull out disc table.
D502
IC507
IC505


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Location of Parts and Controls
1
STANDBY LED
2
@/1 (Power) button
3
2
button
4
3
button
5
#
button
6
KARAOKE PON button
7
Disc tray
8
A OPEN CLOSE button
9
EFFECT PICTURE button
10 EFFECT SOUND button
11 m button
12 M button
13 ­ m JOG SELECTOR M + dial and PUSH SELECT but-
ton
14 Remote sensor
15 x button
16 X button
17 H button
18 RETURN button
19 NEXT button
20 PREV button
21 Display window
22 L/R/STEREO button
23 PLAY MODE button
24 REPEAT button
25 MUSIC LEVEL knob
26 MIC 2 LEVEL knob
27 MIC 2 jack
28 MIC 1 LEVEL knob
29 MIC 1 jack
30 ECHO LEVEL knob
31 MIC CONTROL jack
32 PHONES LEVEL knob
33 PHONES jack
SECTION 2
GENERAL
Front Panel
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
1
2
3
4
5
6
7
8
9
10
11
12
13


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This
section
is
e
xtr
acted
from
instr
uction
man
ual.