Sony MCE-F88K User manual

1
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

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.
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
4-900-307-0sMalaysia, Singapore, Hong Kong model
4-900-307-1sThai model
4-900-307-3sSoudi 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. EXPLODEDVIEWS
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 !!
COMPONENTSIDENTIFIED BYMARK0OR DOTTEDLINE
WITH MARK 0ON 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.

3
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

4
Location of Parts and Controls
1STANDBY LED
2@/1 (Power) button
32button
43button
5#button
6KARAOKE PON button
7Disc tray
8AOPEN CLOSE button
9EFFECT PICTURE button
10 EFFECT SOUND button
11 mbutton
12 Mbutton
13 – mJOG SELECTOR M+ dial and PUSH SELECT but-
ton
14 Remote sensor
15 xbutton
16 Xbutton
17 Hbutton
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
141516
17
18
1920
212223
242526
27
28
29303132
33
12 3 4 5 6 7 8 9 10 11 12
13

5
This section is extracted from
instruction manual.

6

7

8

9

10

11

12
SECTION 3
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
3-1. FRONT PANEL
• In order to remove the front panel block when the power supply
does not turn on, rotate the cam with tapering driver as the figure
shows, and the loading part will be moved.
Then pull out the loading part by your hand to remove the loading
panel as the figure shows. After that take out the front panel block.
3-2. BASE UNIT (BU-5BD24)
Tapering driver
Loading part
Loading panel
1Turn the cam to the direction of
arrow (counter clock wise) by
tapering driver.
2Take off the disc table.
3Yoke bracket
BU-5BD24
4Remove the Base unit
(BU-5BD24) to the direction
of arrow.

13
SECTION 4
TEST MODE
FLUORESCENT INDICATOR TUBE, LED ALL LIT,
AND KEY CHECK MODE
1. Short-circuit the SL501 of the VIDEO board.
2. Press the @/1 button to turn ON the power.
The whole fluorescent indicator tube and LED light up.
3. All buttons have individual button numbers.
When a button is pressed, the button number is counted up and
displayed.
Buttons and Corresponding Button Numbers
Button Button Number or Display
@/1
2
3
#
KARAOKE PON
OPEN CLOSE
PICTURE
SOUND
m
M
H(PLAY)
X(PAUSE)
x(STOP)
PREV
NEXT
RETURN
JOG SELECTOR (button)
JOG SELECTOR (knob)
L/R/STEREO
PLAY MODE
REPEAT
15
6c and LED lighting
67 and LED lighting
6b and LED lighting
77 and LED lighting
16
49 and LED lighting
5d and LED lighting
33
34
Partial lighting 1
Partial lighting 1
All lit (LED lighting)
30
31
0E
81
50
2b
2c
When rotated clockwise: The key control
indicators light up from left to right.
When rotated counterclockwise: The key
control indicators light up from right to left.
4. To exit the mode, disconnect the power cord from the outlet.
Partial lighting 1
Count up display Display button numbe
r
Light alternately

14
[VIDEO BOARD] (SIDE A)
SL501
IC502
SL502
SL503
TEST
MODE
[VIDEO BOARD] (SIDE B)
SL501
D502
SL502
IC507
IC505
SL503
TEST MODE
VIDEO CD COLOR-BARS MODE
On this mode, the data of the color-bars signal as a picture signal and the 1kHz sine wave signal as a sound signal are output by the
mechanism control microcomputer (IC502) for video CD signal check. When measurement of the voltage and waveform on the VIDEO
board, perform it in this mode.
For refernce, the color-bars signal can be observed at J302 (VIDEO OUT) and the sound signal can be observed at J101 (VIDEO/MD
(AUDIO) OUT) using an oscilloscope.
1. Connect the lead wire to both ends of the land of SL503 of the VIDEO board.
2. Turn the power on. Press FUNCTION button to select CD.
3. After 2 or 3 seconds later, connect the lead wire.
4. After measuring, remove the lead wire connected.

15
SECTION 5
ELECTRICAL BLOCK CHECKING
oscilloscope
BD board
TP (FE)
TP (VC)
symmetry
A
B
Within 4.5 ±1 Vp-p
oscilloscope
BD board
TP (RF)
TP (VC)
oscilloscope
BD board
TP (TE)
TP (VC)
Note:
1. CD Block is basically designed to operate without adjustment.
Therefore, check each item in order given.
2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10MΩimpedance.
4. Clean the object lens by an applicator with neutral detergent when
the signal level is low than specified value with the following
checks.
S Curve Check
Procedure :
1. Connect oscilloscope to test point TP (FE) on BD board.
2. Connect between test point TP (FEI) and TP (VC) by lead wire.
3. Turn Power switch on.
4. Put disc (YEDS-18) in and actuate the focus search. (actuate the
focus search when disc table is moving in and out.)
5. Check the oscilloscope waveform (S-curve) is symmetrical
between A and B. And confirm peak to peak level within 4.5 ± 1
Vp-p.
S-curve waveform
6. After check, remove the lead wire connected in step 2 and 3.
Note :
• Try to measure several times to make sure than the ratio of A : B
or B : A is more than 10 : 7.
• Take sweep time as long as possible and light up the
brightness to obtain best waveform.
RF Level Check
Procedure :
1. Connect oscilloscope to test point TP (RF) on BD board.
2. Turn Power switch on.
3. Put disc (YEDS-18) in to play the number five track.
4. Confirm that oscilloscope waveform is clear and check RF sig-
nal level is correct or not.
Note:
A clear RF signal waveform means that the shape “◊” can be clearly
distinguished at the center of the waveform.
RF signal waveform
E-F Balance Check
Procedure :
1. Connect oscilloscpe to test point TP (TE) on BD board.
2. Short-circuit the SL502 of the VIDEO board.
3. Turn the Power switch on to set the ADJ mode.
4. Put disc (YEDS-18) in to play the number five track.
5. Press the PICTURE button. (The tracking servo and the sledding
servo are turned OFF.)
6. Check the level B of the oscilliscope's waveform and the A (DC
voltage) of the center of the Traverse waveform.
Confirm the following :
A/B x 100 = less than ± 22%
Traverse waveform
0V C (DC
voltage)
Tracking servo
Sledding servo
OFF
Tracking servo
Sledding servo
ON
0V
level : 1.3 ±0.6 mVp-p
A (DC voltage)
Center of the waveform
B
7. Press the PICTURE button. (The tracking servo and sledding
servo are turned ON.) Confirm the C (DC voltage) is almost
equal to the A (DC voltage) is step 7.
Traverse waveform
8. Desolder the shortland short-circuited at step 2.
Adjustment Location :
[BD BOARD] – SIDE A –
TP
(TE)
TP
(FEI)
TP
(FE)
TP
(RF) TP (VC)
VOLT/DIV : 200mV
TIME/DIV : 500ns
level : 1.3 ±Vp-p
0.25
0.2

16
VIDEO SECTION
Frequency adjustment
1. Connect the frequency counter to check point of the VIDEO
board.
2. Adjust CT503 of the VIDEO board so that the frequency counter
read 27MHz ± 80Hz at STOP condition.
Adjustment Location :
[ VIDEO BOARD ] – SIDE A –
frequency counter
VIDEO board
(DCLK) +
–
SL501
D502
SL502
CT503
SL503
TEST MODE
VIDEO
FREQUENCY
(27MHz)
(GND)
IC507
IC505
[ VIDEO BOARD ] – SIDE A –
SL501
IC502
IC506
(27MHz)
(GND)
SL502
SL503
TEST
MODE

17
17
SECTION 6
DIAGRAMS
6-1. CIRCUIT BOARDS LOCATION
LOADING board
CN board
BD board
TRANSFORMER board
VOLUME board
MAIN board
DISPLAY board
MIC board
VIDEO boar
d

18
18
MCE-F88K
6-2. BLOCK DIAGRAMS
– CD SECTION –
E
F
A
B
C
D
DRIVE
Q101
LD
RF EQ
AMP
SUMMING
AMP
RF
ERROR
AMP
FOCUS
ERROR
AMP
TRACKING
APC LD
AMP
VC
BUFFER
VC
REF
SWITCH
Q102,103
CTRL 1 CTRL 2
3
RF AMP
IC103
DIGITAL SERVO
DIGITAL SIGNAL PRCESSOR
IC101
LASER
DIODE
DETECTOR
OPTICAL PICK-UP BLOCK
(KSS-213B/S-N)
A
C
D
B
E
F
LD
POWER
PD
LD
PD
LD
A
C
D
B
E
F
TE
FE
RF
ASYMMETRY
CORRECTION
AUTO
SEQUENCER
SERVO
INTEG-
RATOR
MUX
DIGITAL
PLL
EFM
DEMODULATOR
REGISTER
ERROR
CORRECTOR
DATA BUS
32K
RAM
ADDRESS
GENERATOR
D/A DATA
PROCESSOR
DIGITAL
OUT
PEAK
DETECTOR
PARALLEL
PROCESSOR
SERIAL/
SUBCODE Q
PROCESSOR
SYNC
PROTECTOR
SERVO
INTERFACE
CLV SERVO
PROCESSOR
TIMING
GENERATOR 2
OVERSAMPLING
FILTER
18-TIMES
NOISE
SHAPER
INTEG-
RATOR
LD ON
A/D
CONVERTER
PWM
GENERATOR
TRACKING
PWM
GENERATOR
FOCUS
PWM
GENERATOR
SLED
PWM
GENERATOR
VC
TRACKING
SERVO
FOCUS
SERVO
SLED
SERVO
SERVO DSP
TFDR
TRDR
FFDR
FRDR
SRDR
SFDR
MDP
DETECTOR
D OUT
DATA
SUBQ
SQCK
SCOR
MUTE
S STOP
RFDC
FE
TE
SE
MIRR
FOK CPU
INTERFACE
DFCT
SENS
DATA
XLT
CLK
CLOCK
GENERATOR
TIMING
GENERATOR 1
XTAI
XTSL
M
M
TRACKING
COIL
FOCUS
COIL
T+
T
F+
F
SD+
SD
SP+
SP
FOCUS/TRACKING COIL DRIVE
SPINDLE/SLED MOTOR DRIVE
IC102
VC
TFDR
TRDR
FFDR
FRDR
SRDR
SFDR
MUTE
09
S101
LIMIT SW
C2PO
+5V
SCLK
IC104
XRST
ADATA
BCLK
LCLK
SUBQ
SQCK
AMUTE
SCOR
SCLK
MCK
SENS
DATA
XLT
CLK
C2PO
CTRL 1
CTRL 2
XRST
LD ON
LCLK
BCLK
+5V
MD2
RF AC
ASYI
ASYO
CONTROL SIGNAL
BLOCK
SERVO
BLOCK
VCC
VC
VIDEO
SECTION
• SIGNAL PATH
: CD
: VIDEO
(Page 20)
A
4
5
19
20
10
9
24
23
15
1
2
16
17
13
12
27
26
3
5
6
4
9
8
1
2
15
19
13
11
10
12
17
36
38
39
28
29
26
27
30
4
6
8
10
2
100
96
77
46
71
74
78
79
47
45
62
83
70
80
86
87
88
64
56
99
81
M102
SLED
MOTOR
M101
SPINDLE
MOTOR

19
19
– MAIN SECTION –
MCE-F88K
09
S40 ACTIVE
D700-706
FL
DRIVER
IC701
17
S39 WIDE 18
S38 K.PON 19
S37 UP 20
S36 NATURAL 21
S35 DOWN 22
C6
2
C2
7
C1 G1
G6
S1
S24
56
42
40
33
C5
3
6
AMP
IC801
DI
CL
CE
BLK
L-CH
AMP.ON
LO.BOOST
A MUTE
STANDBY
DATA0
CLK1
FLCS
FLBLK
P.ON
RESET
B
VIDEO
SECTION
(Page 20)
61
62
63
64
12
LPF
IC802
1
2
3
IC804
75
MIC MIX AMP
IC602(1/2)
12
MIC AMP
IC602(2/2)
76
13
MIC1 AMP
IC601(1/2)
MIC1 AMP
IC601(2/2)
J602
MIC1
1
ATT SW
Q802
SWITCH
Q801
LINE
MUTE
Q803
HP MUTE
Q813
AUDIO
OUT
PHONES
LEVEL
PHONES
RV300
R-CH
R-CH J600
R
L
J801
SWITCH
Q600
VFDP REG
Q817
+5V REG,RESET GEN
IC806
+B,-B
SWITCH
Q812,815 VOLTAGE
SELECTOR
S900
RECT
D806,807
RECT
D804
+5V REG
Q816
-5V REG
Q819
ECHO
LEVEL
MUTE
CONT
Q814
+7V REG
IC807
+7V
+12V
+5V
-5V
RST
+5V VCC
+B
-B
VFDP
VF1
VF2
VF1 VF2
+5V
8
RV303
IC600
1
1
4
5
12
+V OUT CO+
-V OUT CO-
14
5 3
10 ON/OFF
LED
DRIVE
Q700-706
ATT
CONT
Q804,809
LOW
BOOST
SWITCH
Q807,810
POWER ON
SWITCH
Q820,821
•R CH: Same as L ch
•SIGNAL PATH
: CD
: MIC
•Abbreviation
EA : Saudi Arabia model.
HK : Hong Kong model.
MY : Malaysia model.
SP : Singapore model.
TH : Thai model.
•
GRID
DRIVE
Q401-402
3
75
OUTPUT AMP
IC803
1
2
3
AC IN
T900
POWER
TRANSFORMER
EA, HK, MY, SP
ECHO
CONTROL
RV400
+5V
MIC1
LEVEL
RV401
MIC2
LEVEL
J603
MIC2
FLUORESCENT
INDICATOR TUBE
FL700

20
20
– VIDEO SECTION –
MCE-F88K
SYSTEM
SELECT
S501
65
15
13
09
38
P.ON
25
JOG1
47
LO. BOOST
AUDIO MUTE
XRESET
INSW
OUTSW
LOAD OUT
LOAD IN
TEST LED
NT/PAL
XOUT
+5V
D502
S152
LOAD IN
A7
DF LATCH
SHARPNESS
XIN
24
45 BUS
35 XV LEVEL. DOWN
DSP DATA
DSP LATCH
SENSE CLK
DSP CLK
SENSE
DSP MUTE
CTRL1(L:DOUBLE)
CTRL2
LDON
SCOR
SUBQ DATA
22
34
X501
NTSC
AUTO
PAL
10MHz
X503
27MHz
MECHA CONTROL
IC502
INVERTER
IC504
INVERTER
IC501
D-RAM
IC507
ROM
IC506
AMP
IC101
VIDEO/CD DECODER
IC505
DIGITAL FILTER & D/A CONVERTER
IC509
DATA1O
DATA1I
CLK1
CL680 INT
CL680 HSEL
CL680 HRDY
680 RESET
DATA0
DATAI
CLK1
INT
HSEL
HRDY
RESET
ADATA
BCLK
LRCK
C2P0
DATA
XLT
CLK
SENS
SCLK
AMUTE
CTRL1
CTRL2
LDON
SCOR
SUBQ
SQCK
XRST
MCK
A
CD
SECTION
(Page 18)
5
B
MAIN
SECTION
•R CH: Same as L ch
•SIGNAL PATH
: CD
: CHROMA
:Y
: VIDEO
SUBQ CLK
DEVICE RESET
(Page 19)
23
48
78
STANDBY
79
FL CS
7
REMOTE IN
JOG2 26
90
KEY1
91
KEY2
89
MIC CTRL
MASO 80
100
AMP.ON
94
MUSIC VOL
KEY3
P.ON
JOG1
LB
MUTE
STANDBY
FL CS
REMOTE
JOG2
KEY1
KEY2
MIC C
FLBLK
AMP
MVOL
KEY3
92
4
50
49
7
1
93
73
12
51
3
4
5
1
2
10
11
27
28
18
37
36
77
20
21
33
32
31
69
HD-OUT
6CD-C2P0
CD-LRCK
CD-BCK
HRDY
HD-IN
HCK
HINT
HSEL
RESET
PGIO2/VSYNC/CSYNC
INVERTER
Q502
CD-DATA
MWE WE
RAS UCAS LCAS A0 A8 DQ1 DQ16
RASO
CAS
MCE
MD0
I
MD15
MA0
I
MA10
C-OUT
Y-OUT
75
DA-DATA
DA-BCK 111
VCK-IN 106
DA-XCLK 86
110
DA-LRCK 108
112
119
117
113
114
121
93
RREF
SWITCH
Q501 72
60
3
5
4
13 14 28 29
38 42 40
10
8
4
13
5
1
13
8
12
6
11
1
3
19
17
DATA0
CLK1
DATA0
CLK1
8
7
10 21 20 4
11
18
MODE
PLM
D/A
CONV
CLOCK
DIVIDER
9
24
1
16 - 19 22 - 26 2 - 10 31 - 39
O0 O7 A11 A17 A0 A10 CE
13 - 15 17 - 21 25 4 28 29 3 2 14 10 12 - 5 27 26 23
58 - 44
10 - 29
22
37
MUTE
Q454
OUTPUT
AMP
Q452
OUTPUT
AMP
Q451
BUFFER
Q301
MUTE
Q453
MIX AMP
Q308,310
BUFFER
Q303,304
TRAP
Q302,306,307
1
3
2
4
14
VIDEO OUT
J302
J301
VIDEO
FREQUENCY
CT503
DATA0
L - CH
R-CH
CLK1
XRST
AMUTE
LO.BOOST
P.ON
STANDBY
FLCS
FLBLK
AMP.ON
MUTE
LB
P.ON
STANDBY
FLCS
FLBLK
AMP
27MHz
384FS
768FS
S VIDEO
OUT
DATAI
DATAO
CLK1
HRDY
INT
HSEL
RST
S151
LOAD IN
M151
LOADING
MOTOR
52
MOTOR
DRIVE
LOADING
MOTOR DRIVER
IC451
JOG
SELECTOR
S700
MIC
CONTROL
REMOTE
SENSOR
IC700
2
J601
MUSIC
LEVEL
RV301
S701-719
M