D-F21, D-F22ST, ICD-BP220 - Sony Audio Service Manual (repair manual)

Model
D-F21 D-F22ST ICD-BP220
Pages
32
Size
4.33 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
d-f21-d-f22st-icd-bp220.pdf
Date

View Sony D-F21 / D-F22ST / ICD-BP220 Service Manual online

1
Model Name Using Similar Mechanism
D-E220/E225/E226CK
CD Mechanism Type
CDM-3123EBA
Optical Pick-up Name
DAX-23E
SERVICE MANUAL
US Model
D-F22ST
E Model
D-F21
D-F21/F22ST
FM/AM PORTABLE CD PLAYER
CD player
System
Compact disc digital audio system
Laser diode properties
Material: GaAlAs
Wavelength: 
λ = 780 nm
Emission duration: Continuous
Laser output: Less than 44.6 µW (This output
is the value measured at a distance of 200 mm
from the objective lens surface on the optical
pick-up block with 7 mm aperture.)
D-A conversion
1-bit quartz time-axis control
Frequency response
20 - 20,000 Hz +1/–2 dB
(measured by EIAJ CP-307)
Output (at 4.5 V input level)
Headphones (stereo minijack)
Approx. 12 mW + Approx. 12 mW
at 16 ohms
Radio
Frequency range (STEP switch)
9 kHz step:
   FM: 87.5 - 108.0 MHz
   AM: 531 - 1,710 kHz
10 kHz step:
   FM: 87.5 - 108.0 MHz
   AM: 530 - 1,710 kHz
Antenna
FM: Headphones/earphones cord antenna
AM: Built-in ferrite bar antenna
SPECIFICATIONS
General
Power requirements
For the area code of the model you purchased,
check the upper left side of the bar code on the
package.
• Two LR6 (size AA) batteries: 3 V DC
• AC power adaptor (DC IN 4.5 V jack):
US/E92/MX model: 120 V, 60 Hz
E13 model: 220 - 230 V, 50/60 Hz
Battery life* (approx. hours)
(When you use the CD player on a flat and stable
surface.)
Playing time varies depending on how the CD player
is used.
When using
ESP
RADIO
on
off
on
Two sony alkaline
24
25
66
batteries LR6(SG)
* Measured value by the standard of JEITA
(Japan Electronics and Information Technology
Industries Association).
** Charging time varies depending on how the
rechargeable battery is used.
Operating temperature
5°C - 35°C (41°F - 95°F)
Dimensions (w/h/d) (excluding projecting
parts and controls)
Approx. 161 
× 26.3 × 130.3 mm
(6 
3/8
 
× 1 
1/16
 
× 5 
1/4
 in.)
Mass (excluding accessories)
Approx. 210 g (7.5 oz.)
Supplied accessories
For the area code of the location in which you
purchased the CD player, check the upper left
side of the bar code on the package.
Headphones (1)
AC power adaptor (1) (D-F21)
Design and specifications are subject to change
without notice.
• Abbreviation
E13 : AC 220 - 230V area in E model
E92 : AC 120V area in E model
MX : Mexican model
Ver 1.0  2001.10
9-873-372-01
2001J0400-1
© 2001.10
Sony Corporation
Personal Audio Company
Published by Sony Engineering Corporation
2
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron 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.
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.
TABLE OF CONTENTS
1. SERVICE NOTE
................................................................. 3
2. GENERAL
Getting started ......................................................................... 4
3. DISASSEMBLY
3-1.   “Lid, Battery Case”, Cabinet (Front) Assy .......................... 5
3-2.   Lid Assy, Upper ................................................................... 5
3-3.   Main Board, MD Assy ........................................................ 6
3-4.   Optical Pick-up, Motor ....................................................... 6
4. ELECTRICAL ADJUSTMENTS
Tuner Section ........................................................................... 7
CD Section .............................................................................. 8
5. DIAGRAMS
5-1.   IC Pin Descriptions ............................................................. 9
5-2.   Block Diagram –CD Section– ........................................... 13
5-3.   Block Diagram –Tuner Section– ....................................... 14
5-4.   Block Diagram –Power Supply Section– .......................... 15
5-5.   Printed Wiring Board –Main Section– .............................. 16
5-6.   Schematic Diagram –Main Section (1/3)– ......................... 18
5-7.   Schematic Diagram –Main Section (2/3)– ......................... 19
5-8.   Schematic Diagram –Main Section (3/3)– ......................... 20
5-9.   IC Block Diagrams ............................................................ 21
6. EXPLODED VIEWS
6-1.   Cabinet (Front) Section ..................................................... 24
6-2.   Cabinet (Lower) Section ................................................... 25
6-3.   CD Mechanism Deck Section (CDM-3123EBA) ............. 26
7. ELECTRICAL PARTS LIST
......................................... 27
D-F21/F22ST
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.
3
D-F21/F22ST
SOUND/
PRESET
S811
L3
AM
FERRITE-
ROD
ANTENNA
S801
CD DOOR
OPEN
S801
– MAIN BOARD (SIDE B) –
RF-IN
TAP802
– MAIN BOARD (SIDE A) –
SECTION 1
SERVICE NOTE
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
The laser diode in the optical pick-up block may suffer electro-
static 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.
Precautions for Checking Emission of Laser Diode
Laser light of the equipment is focused by the object lens in the
optical pick-up so that the light focuses on the reflection surface
of the disc. Therefore, be sure to keep your eyes more then 30 cm
apart from the object lens when you check the emission of laser
diode.
Before Replacing the Optical Pick-Up Block
Please be sure to check throughly the parameters as par the “Opti-
cal Pick-Up Block Checking Procedures” (Part No.: 9-960-027-
11) issued separately before replacing the optical pick-up block.
Note and specifications required to check are given below.
• FOK output : IC601 eg pin
When checking FOK, remove the lead wire to disc motor.
• RF signal P-to-P value : 0.45 ± 0.1 Vp-p
• The repairing grating holder is impossible.
Laser Diode Checking Methods
During normal operation of the equipment, emission of the laser
diode is prohibited unless the upper lid is closed while turning ON
the S801. (push switch type)
The following two checking methods for the laser diode are
operable.
• Method:
Emission of the laser diode is visually checked.
1. Open the upper lid.
2. With a disc not set, turn on the S801 with a screwdriver having a
thin tip as shown in Fig.1.
or TAP802 is shorted as shown in Fig.2.
Note: Do not push the detection lever strongly, or it may be bent
or damaged.
3. Press the  N X  button.
4. Observing the objective lens, check that the laser diode emits
light.
When the laser diode does not emit light, automatic power
control circuit or optical pick-up is faulty.
In this operation, the objective lens will move up and down 5
times along with inward motion for the focus search.
Fig. 2
Fig. 1
detection lever
detection lever
main board
S801
4
D-F21/F22ST
Locating the controls 
For details, see pages in parentheses. 
 
CD player (front) 
1 i (headphones)
jack
(page 6)
7 Display
(pages 8 - 14)
4 VOLUME
control
(page 6)
5 MENU/PRESET +
button
(pages 8, 11, 12)
2 OPEN button
(page 6)
3 SOUND/
PRESET –
button
(pages 11 - 13)
qa DC IN 4.5 V
(external power
input) jack
(page 18)
8
u (play/pause)
button
(pages 6, 7)
9
x (stop) •RADIO OFF
button
(pages  7, 9, 11, 15)
q; Strap holes
6 RADIO ON•BAND/
MEMORY button
(pages 9 - 12)
qd HOLD switch
(page 14)
qs
./ >
(AMS/search) •
TUNE –/+ buttons
(pages 7 - 9, 11)
CD player (inside) 
qg AVLS switch
(page 14)
CD player (rear)  
qf ESP switch
(page 13)
qh E13 model:
MONO/ST (stereo)  switch (page  10)
Other models:
LOCAL/DX switch  (page  10)
qk Battery compartment
(page 17)
qj STEP switch
(page 12)
SECTION 2
GENERAL
This section is extracted
from instruction manual.
5
D-F21/F22ST
Note : Follow the disassembly procedure in the numerical order given.
3-2. LID ASSY, UPPER
SECTION 3
DISASSEMBLY
3-1. “LID, BATTERY CASE”, CABINET (FRONT) ASSY
1
 B 2x10
3
 B 2x10
4
 claws
0
 cabinet (upper) assy
5
 claws
6
 claws
7
 claws
8
9
2
 lid, battery case
boss
1
 claws
2
 lid assy, upper
cabinet  (front) assy
6
D-F21/F22ST
3-3. MAIN BOARD, MD ASSY
3-4. OPTICAL PICK-UP, MOTOR
1
 CN501
4
 MD assy
7
 MAIN board
cabinet (lower) sub assy
knob (HOLD)
terminal (+.–), battery (BT400)
terminal (–), battery (BT402)
S803
2
 CN502
5
 S812
6
 S813
3
 CN503
1
 B 1.7x5
3
 B 1.7x5
7
 P 1.4x3.5
9
 B 1.4x2.3
0
 rack
8
 retainer, shaft
qa
 screw (feed) assy
qd
 shaft, standard
qs
 pick-up block, optical
4
 cover, gear
2
 motor assy, turntable (M502)
5
 motor assy, sled (M501)
chassis
6
 gear (B)
Note: When installing, fit the knob (HOLD) and S803.
7
D-F21/F22ST
digital
voltmeter
100 k
TP81 (VT)
i
 jack (J302)
set
16 
level meter
(range: 0.5–5 V ac)
Put the lead-wire
antenna close to
the set.
AM RF signal
generator
TP3 (RF-IN)
FM RF signal
generator
0.01 
µ
F
set
  TUNER SECTION     0 dB = 1 µV
• FM Section
Setting:
RADIO ON•BAND/MEMORY button : FM
STEP switch
: 10k
75 kHz frequency
deviation by 1 kHz signal
output level : as low as possible
• AM Section
Setting:
RADIO ON•BAND/MEMORY button : AM
STEP switch
: 10k
30% amplitude
modulation by
400 Hz signal
• Connecting Level Meter (FM and AM)
• Connecting Digital Voltmeter (FM and AM)
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
• For FM adjustment, fix the FM RF coil (L1) as shown next page
and then perform tracking adjustment at L2 and CT1.
Lastly check the voltage value.
• For AM adjustment, fix the ferrite-rod antenna (L3) as shown
next page and then perform tracking adjustment at L4 and CT3.
Lastly check the voltage value.
Adjustment Location: See page 8.
SECTION 4
ELECTRICAL ADJUSTMENTS
FM FREQUENCY COVERAGE
CHECK
Frequency Display
87.5 MHz
108 MHz
Reading on Digital voltmeter
2.5 ± 1.5 V
7.0 ± 4.0 V
Adjustment Part
<confirmation> <confirmation>
FM TRACKING  ADJUSTMENT
Adjust for a maximum reading on level meter.
L2
CT1
87.5 MHz
108 MHz
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
450 kHz
AM FREQUENCY COVERAGE
CHECK
Frequency Display
530 kHz
1,710 kHz
Reading on Digital voltmeter
1.0 ± 0.5 V
5.2 ± 0.7 V
Adjustment Part
<confirmation> <confirmation>
AM TRACKING  ADJUSTMENT
Adjust for a maximum reading on level meter.
L4
CT3
620 kHz
1,400 kHz
8
D-F21/F22ST
TP629
RF
– MAIN BOARD (SIDE B) –
Adjustment Location:
  CD SECTION
CD section adjustments are done automatically in this set.
In case of operation check, confirm that focus bias.
FOCUS BIAS CHECK
1. Connect the oscilloscope between TP629 (RF) and GND on
main board.
2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01)
3. Press the  N X  button.
4. Confirm that the oscilloscope waveform is as shown in the
figure below. (eye pattern)
A good eye pattern means that the diamond shape (     ) in the
center of the waveform can be clearly distinguished.
• RF signal reference waveform (eye pattern)
Test Point:
When observing the eye pattern, set the oscilloscope for AC range
and raise vertical sensitivity.
CN501
IC61
TP81
VT
TP3
RF-IN
– MAIN BOARD (SIDE A) –
CT3   L4
L3
L1
CT1
L2
FM TRACKING ADJ
AM IF ADJ
T1
AM TRACKING
 ADJ
RF level :
0.45 
±
 0.1 Vp-p
VOLT/DIV : 20 mV (10 : 1 probe in use)
TIME/DIV : 500 nS
9
D-F21/F22ST
SECTION 5
DIAGRAMS
5-1. IC PIN DESCRIPTIONS
• IC61  TC9327AF-631 (TUNER PLL, LCD DRIVER)
Pin No.
Pin Name
I/O
Pin Description
1 – 4
COM1 – 4
O
LCD driver signal output
5 – 20
S1 – 16
O
LCD driver signal output
21
AM STEP-I
I
AM 9K/10K tuning step select signal input (initialization)
22
DEST2-I
I
Bit2 tuner destination setting signal input (Fixed at “L” in this set)
23
DEST1-I
I
Bit1 tuner destination setting signal input (Fixed at “L” in this set)
24
DEST0-I
I
Bit0 tuner destination setting signal input (Fixed at “L” in this set)
25
XLOCAL/XMONO-DET-I
I
LOCAL/DX or MONO/STEREO ON-OFF switch detect signal input
26, 27
NC
Not used. (Open)
28
LCDREQ-I
I
LCD display request signal input
29
LID OPEN
I
CD door open detect signal input
30
EEP D0/D1-IO
I/O
Data signal input/output for EEPROM IC.
31
EEP SK-O
O
Clock signal output for EEPROM IC.
32
EEP CS-O
O
Chip select signal output for EEPROM IC.
33
XL/O-I
I
Line out signal input
34, 35
NC
Not used. (Open)
36
MEM-KEY (3-BIT)
I
Memory key signal input (Fixed at “H” in this set)
37
PRESET KEY
I
Not used in this set. (Open)
38
CD ACK-I
O
CD acknowledge signal output
39
CDON-IWP-CDU
I
CD ON request signal input (Wake-up tuner in sleep mode)
40
I/O (RESERVED)
Not used. (Open)
41
NC
Not used. (Open)
42
AD1 KEY
I
Set keys signal input
43
AD2 RMKEY
I
Remote key signal input (Fixed at “L” in this set)
44
AD3 BATT HIDC
I
Battery/HiDC level detect signal input
45
AD DC REF
I
Reference DC signal input of A/D.
46
SDI-I-CDU
I
Serial data signal input from system control IC.
47
SDO-O-CDU (RESERVED)
O
Serial data signal output to system control IC.
48
SCK-I-CDU
I
Serial clock signal input from system control IC.
49
TUBEEP-O
O
Beep sound control signal output
50
NC (I/O)
Not used. (Open)
51
XHOLD-I-SW
I
HOLD detect signal input
52
XAVLS-I-SW
I
AVLS detect signal input
53
XDC IN DET-I
I
DC-in detect signal input
54
TU ON-O
O
Tuner ON request signal output
55
ST OR DX-O-CTR
O
LOCAL/DX or MONO/STEREO ON-OFF control signal output
56
TUBASS2-O
O
MEGA BASS 2 sound mode signal output (Not used in this set)
57
TU TEST MODE
I
Tuner test mode detect signal input
58
TUBASS1-O
O
MEGA BASS 1 sound mode signal output (Not used in this set)
59
AM/XFM-O
O
Band control FM/AM signal output to tuner IC.
60
+B ON/OFF
O
Radio power ON/OFF signal output
61
IFREQ-O
O
IF request signal output
62
TUMUTE-O
O
Mute HP control signal output
63
TEST
Not used. (Open)
64
IFIN
I
FM/AM IF signal input
65
EO (DO1)
O
PLL error signal output
66
NC (DO2)
Not used. (Open)
67
HOLD
I
Not used. (Connect to ground in this set)
68
NC
Not used. (Open)
69
GND
Ground
70
FM IN
I
FM oscillation signal input
10
D-F21/F22ST
Pin No.
Pin Name
I/O
Pin Description
71
AM IN
I
AM oscillation signal input
72
VDD (1.8-2.2V)
Power supply pin
73
RESET
I
Power reset signal input
74
XOUT
O
Crystal oscillation signal output (75 kHz)
75
XIN
I
Crystal oscillation signal input (75 kHz)
76
VXT
Crystal oscillation signal pin
77
VLCD
LCD voltage doubler
78, 79
C1, 2
LCD voltage doubler
80
VEE
Constant voltage output to LCD.

Download Sony D-F21 / D-F22ST / ICD-BP220 Service Manual (Repair Manual)

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