Sony CFD-922L User manual

– 1 –
CD Model Name Using Similar Mechanism CFD-S22/S32
Section CD Mechanism Type KSM-213CDM
Optical Pick-up Name KSS-213C
TC Model Name Using Similar Mechanism CFD-S22/S32
Section Tape Transport Mechanism Type MF-S22-117
SERVICE MANUAL
E Model
CFD-922L
CD RADIO CASSETTE-CORDER
CD player section
System
Compact disc digital audio system
Laser diode properties
Material: GaAlAs
Wave length: 780 nm
Emission duration: Continuous
Laser output: Less than 44.6 µW
(This output is the value measured at a distance of
about 200 mm from the objective lens surface on
the optical pick-up block with 7 mm aperture.)
Spindle speed
200 r/min (rpm) to 500 r/min (rpm) (CLV)
Number of channels
2
Frequency response
20 - 20,000 Hz +1/–2 dB
Wow and flutter
Below measurable limit
Radio section
Frequency range
CFD-922L
FM 87.5 - 108 MHz
MW 531 - 1,602 kHz
LW 153 - 279 kHz
IF FM: 10.7 MHz
MW/LW: 450 kHz
Aerials
FM: Telescopic aerial
MW/LW: Built-in ferrite bar aerial
SPECIFICATIONS
–Continued on next page –
Cassette-corder section
Recording system
4-track 2 channel stereo
Fast winding time
Approx. 120 s (sec.) with Sony cassette C-60
Frequency response
TYPE I (normal): 70 - 10,000 Hz
General
Speaker
Full range: 10 cm dia.,
3.2 ohms, cone type (2)
Outputs
Headphones jack (stereo minijack)
For 16 - 68 ohms impedance headphones
Maximum power output
2.3 W + 2.3 W
Power requirements
For CD radio cassette-corder:
230 V AC, 50 Hz
9 V DC, 6 R20 (size D) batteries
Power consumption
AC 20 W
Photo: Blue
Ver 1.0 2000. 08

–2 –
Battery life
For CD radio cassette-corder:
FM recording
Sony R20P: approx. 13.5 h
Sony alkaline LR20: approx. 20 h
Tape playback
Sony R20P: approx. 7.5 h
Sony alkaline LR20: approx. 15 h
CD playback
Sony R20P: approx. 2.5 h
Sony alkaline LR20: approx. 7 h
Dimensions
Approx. 420 ×165 ×256 mm (w/h/d)
(16 5/8 ×6 1/2 ×10 1/8 inches) (incl. projecting parts)
MassApprox. 4.1 kg (9 lb. 1 oz.) (incl. batteries)
Supplied accessories
Mains lead (1)
Design and specifications are subject to change without
notice.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINE
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.
CAUTION
Use of controls or adjustments or performance of proce-
dures other than those specified herein may result in haz-
ardous radiation exposure.
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 dam-
aged by heat.
NOTES ON HANDLING THE 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.
This Compact Disc player is
classified as a CLASS 1
LASER product.
The CLASS 1 LASER
PRODUCT label is located
on the bottom exterior.

–3 –
TABLE OF CONTENTS
1. SERVICING NOTES......................................................... 4
2. GENERAL
Location of controls................................................................. 5
Adjusting the sound emphasis (MEGA BASS/TONE) ...........5
Playing a CD ........................................................................... 6
Listening to the radio............................................................... 6
Playing a tape .......................................................................... 7
Recording ................................................................................ 7
3. DISASSEMBLY
3-1. Cabinet (Front) Sub Assy ....................................................8
3-2. Wires ................................................................................... 9
3-3. Secondary Board, Power Board .......................................... 9
3-4. Tuner Board....................................................................... 10
3-5. Cabinet (Upper) Assy ........................................................ 10
3-6. Main Board ....................................................................... 11
3-7. CD Block Assy .................................................................. 11
3-8. MD Block Assy ................................................................. 12
3-9. Holder Assy, Cassette ........................................................ 12
3-10. PRE Board......................................................................... 13
3-11. “Head, Magnetic”, Head (Erase), Belt, M301
(Capstan/Reel Motor) ........................................................ 13
4. MECHANICAL ADJUSTMENTS............................... 14
5. ELECTRICAL ADJUSTMENTS
Tape Section .......................................................................... 14
Tuner Section......................................................................... 15
CD Section ............................................................................ 16
6. DIAGRAMS
6-1. IC Pin Description............................................................. 17
6-2. Circuit Boards Location .................................................... 18
6-3. Block Diagram – CD Section –......................................... 19
6-4. Block Diagram – Main Section –...................................... 21
6-5. Printed Wiring Board – Tuner Section – ........................... 23
6-6. Schematic Diagram – Tuner Section –.............................. 25
6-7. Printed Wiring Board – CD Section – ............................... 27
6-8. Schematic Diagram – CD Section –.................................. 29
6-9. Schematic Diagram – PRE Section –................................ 31
6-10. Printed Wiring Boards – Main Section – .......................... 33
6-11. Schematic Diagram – Main Section (1/2) – ...................... 35
6-12. Schematic Diagram – Main Section (2/2) – ...................... 37
6-13. Printed Wiring Board – Control Section – ........................ 39
6-14. Schematic Diagram – Control Section – ........................... 41
6-15. Printed Wiring Boards – Power Supply Section – ............ 43
6-16. Schematic Diagram – Power Supply Section –................. 45
7. EXPLODEDVIEWS
7-1. Cabinet (Front) Section .....................................................50
7-2. Cabinet (Rear) Section ...................................................... 51
7-3. Cabinet (Upper) Section.................................................... 52
7-4. Tape Mechanism Section-1 ............................................... 53
7-5. Tape Mechanism Section-2 ............................................... 54
7-6. Optical Pick-up Section..................................................... 55
8. ELECTRICAL PARTS LIST......................................... 56

–4 –
CHUCK PLATE JIG ON REPAIRING
On repairing CD section, playing a disc without the lid (CD), use
Chuck Plate Jig.
•Code number of Chuck Plate Jig: X-4918-255-1
SECTION 1
SERVICING NOTES
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
1. Turn ON the OPERATE button and press FUNCTION button
to CD position.
2. Open the lid (CD).
3. Turn on S501 with screwdriver, etc. as following figure.
4. Press the CD N X button.
5. Confirm the laser diode emission while observing the objecting
lens. When there is no emission,Auto Power Control circuit or
Optical Pick-up is broken.
Objective lens moves up and down three times for focus search.
S501

–5 –
SECTION 2
GENERAL This section is extracted
from instruction manual.
Reinforcing the bass sound
Press MEGA BASS.
"MEGA BASS" appears in the display.
To return to normal sound, press the button again.
Tape compartment
MEGA BASS
ZPUSH OPEN/CLOSE
CD compartment
VOLUME+,–
TUNING–, +
., >
DISPLAYENT
MEMORY
PLAY MODE
MONO/ST*
Location of contr ols
i(headphones)jack
Number buttons for
CD/RADIO DIRECT OPERATION
x
u
OPERATE
(or POWER) SLEEP
CD RADIO BAND
AUTO PRESET
Tip
To listen through headphones, connect the headphones to the
i (headphones) jack.
TONE
(CFD-S32/S32Lonly)
OPR/BATT
indicator
* The name of this button is PLAY MODE•MONO/ST for CFD-S22/S32,
PLAY MODE•MONO/ST ISS for CFD-S22L/S32L/922L.
TAPE
Adjusting the sound emphasis (MEGA BASS/TONE)

–6 –
1 Press CD (direct power-on).
3 Close the CD compartment.
4 Press u(N on the remote, CFD-S32/S32L only).
The player plays all the tracks once.
Tracknumber Playingtime
To
adjust the volume
stop playback
pause playback
go to the next track
go back to the previous track
remove the CD
turn on/off the player
c
Playing a CD
Press
VOLUME +, –(VOL +, –on the remote,
CFD-S32/S32L only)
x
u (X on the remote, CFD-S32/S32L only)
Press the button again to resume play after
pause.
>
.
ZPUSH OPEN/CLOSE
OPERATE (or POWER)
1 Press RADIO BAND•AUTO PRESET until the band you
want appears in the display (direct power-on).
Each time you press the button, the indication changes as
follows:
CFD-S22/S32: “FM1”t“FM2”t“AM”
CFD-S22L/S32L/922L: “FM1”t“FM2”t“MW”t
“LW”.
2 Hold down TUNING + or –(TUNE + or –on the remote,
CFD-S32/S32L only) until the frequency digits begin to
change in the display.
The player automatically scans the radio frequencies and
stops when it finds a clear station.
If you can't tune in a station, press the button repeatedly
to change the frequency step by step.
To
adjust the volume
turn on/off the radio
To improve broadcast reception
Reorient the antenna for FM. Reorient the player itself for AM or
MW/LW.
FM AM/MW/LW
Tips
•The "FM1" and "FM2" bands have the same functions. You can store the
stations you want separately in "FM1" and "FM2".
•If the FM broadcast is noisy, press PLAY MODE•MONO/ST until
"Mono" appears in the display and the radio will play in monaural.
Listening to the radio
Press
VOLUME +, –(VOL +, –on the remote,
CFD-S32/S32L only)
OPERATE (or POWER)
Display
Display
2 Press ZPUSH OPEN/CLOSE down to open the CD
compartment and place a CD in the CD compartment.
With the labeled side up
c
Display

–7 –
1 Press TAPE (direct power-on).
2 Press xZ to open the tape compartment and insert a
recorded tape. Close the compartment.
3 Press N.
With the sideyou want to
play facing upward 2
Select the program source you want to record.
To record from the CD player
Press CD and insert a CD (See "Playing a CD").
To recordfrom the radio
Press RADIO BAND•AUTO PRESET and tune in the
station you want (See "Listening to the radio").
3 Press zto start recording.
(Nis depressed automatically.)
1 Press xZ to open the tape compartment and insert a
blank tape.
With the sideyou want to
recordon facing upward
To Press
stop recording xZ
pause recording X
Press the button again to resume recording.
turn on/off the player OPERATE (or POWER)
Tips
•Adjusting the volume or the audio emphasis will not affect the
recording level.
•CFD-S22L/S32L/922L only: If the MW/LW program makes a
whistling sound after you've pressed zin step 3, press PLAY MODE•
MONO/ST ISS (Interference Suppress Switch) repeatedly until the
noise is at a minimum.
•For the best results, use the AC power as a power source for recording.
•To erase a recording, proceed as follows:
1 Insert a tape with the recording you want to erase.
2 Press TAPE.
3 Press z.
To
adjust the volume
stop playback
fast-forward or rewind the tape
pause playback
eject the cassette
turn on/off the player
Notes on cassettes
•Break off the cassette tab from side A or Bto prevent accidental
recording. If you want to reuse the tape for recording, cover the broken
tab with adhesive tape.
•The use of a cassette with more than 90 minutes of play time is not
recommended except for long, continuous recording or playback.
Tab for side B Tab for side A
SideA
c
c
UseTYPEI (normal) tape only.
Press
VOLUME +, –(VOL +, –on the
remote, CFD-S32/S32L only)
xZ
Mor m
X
Press the button again to resume play
after pause.
xZ
OPERATE (or POWER)
Display
Display
Display
UseTYPEI (normal) tape only.
Playing a tape Recording

–8 –
Set Cabinet
(Front)
Sub Assy
Wires MD
Block
Assy
Main
Board
CD
Block
Assy
Holder Assy,
Cassette
PRE
Board
“Head, Magnetic”,
Head (Erase),
Belt,
M301
(Capstan/Reel Motor)
Cabinet
(Upper)
Assy
Secondary Board,
Power Board
Tuner
Board
•The equipment can be removed using the following procedure.
SECTION 3
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
1lid, battery case
3BVTP 3x10
2BVTP 3x10
5BVTP 3x12
6BVTP 3x12
4BVTP 3x10
lid (CD)
7CNP323
8CNP501
9cabinet (front) sub assy
3-1. CABINET (FRONT) SUB ASSY

–9 –
3-2.WIRES
3-3. SECONDARY BOARD, POWER BOARD
Put flat cable and wires between the cabinets and push them in the
grooves located at A to G in the figure to prevent disconnection
before assembling the set.
1BVTP 3x10
2BVTP 3x10
4CNP902
5CNP901
6POWER board
3BVTP 3x10
SECONDARY board
CABINET (REAR)
CABINET (FRONT
)
AB
E
F
from speaker
G
CD

–10 –
3-5. CABINET (UPPER) ASSY
3-4.TUNER BOARD
1BVTP 3x10 5holder (PWB)(TU)
3CNP1
2
6TUNER board
4
1CNP902
4BVTP 3x10
5BVTP 3x12
6BVTP 3x12
7BVTP 3x12
2holder assy, cassette
8handle
9cabinet (upper) assy
3lid (CD)
cabinet (rear)

–11 –
3-6. MAIN BOARD
3-7. CD BLOCK ASSY
1BVTP 3x10
2BVTP 3x10
3connector
(S501)
8MAIN board
4CNP651
5CNP322
6CNP505
7CNP502
1PWH 2.6x10 2PWH 2.6x10
3CD block assy

–12 –
3-8. MD BLOCK ASSY
3-9. HOLDER ASSY, CASSETTE
1BVTP 3x10
2BVTP 3x10
3MD block ass
y
1BVTP 3x10
2damper
4holder assy, cassette
3

–13 –
3-10. PRE BOARD
1BVTP 2x4
2PRE board
3Removal the solders.
3-11.“HEAD, MAGNETIC”, HEAD (ERASE), BELT, M301 (CAPSTAN/REEL MOTOR)
MD block assy
1B 2.6 ×5
4M301
(capstan/reel motor
)
2
3belt
5claws
7claws
6head (erase)
8head, magnetic

–14 –
i
j
ack
(
J321
)
set
32 Ω
test tape
WS-48A
(3 kHz, 0 dB)
digital frequency
counter
TAPE SECTION 0 dB = 0.775 V
•Standard Output Level
Output terminal HP OUT
load impedance 32 Ω
output signal level 0.25 V (–10 dB)
•Test Tape
Type Signal Used for
WS-48A 3 kHz, 0 dB tape speed adjustment
Tape Speed Adjustment
Procedure:
Mode: playback
PRECAUTION
1. Clean the following parts with a denatured-alcohol-moistened
swab :
record/playback head pinch roller
erase head rubber belts
capstan idlers
2. Demagnetize the record/playback head with a head demagne-
tizer. (Do not bring the head magnetizer close to the erase head.)
3. Do not use a magnetized screwdriver for the adjustments.
4. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
Torque Measurement
Mode Torque meter Meter reading
FWD CQ-102C 30 –70 g •cm
(0.42 –0.97 oz •inch)
FWD CQ-102C 1.5 –5.5 g •cm
Back Tension (0.021 –0.076 oz •inch)
FF CQ-201B more than 60 g •cm
(more than 0.83 oz •inch)
REW CQ-201B more than 60 g •cm
(more than 0.83 oz •inch)
Tape Tension Measurement
Mode Tension meter Meter Reading
FWD CQ-403A more than 100 g
(more than 3.53 oz)
SECTION 5
ELECTRICAL ADJUSTMENTS
SECTION 4
MECHANICAL ADJUSTMENTS
Adjust so that the value on the digital frequency counter is
3,000 Hz.
Specification Value:
Digital frequency counter
2,910 to 3,090 Hz
Adjust so that the frequency at the beginning and that at the end of
tape winding are between 2,910 to 3,090 Hz.
Adjustment Location:
Tape speed adjustment
control inside motor

–15 –
digital
voltmeter
100 kΩ
TP (VT)
ijack (J321)
set
32 Ω
level meter
(range: 0.5–5 V ac
)
Put the lead-wire
antenna close to
the set.
AM RF signal
generator
TP (JW2)
FM RF signal
generator
0.01 µF
set
TUNER SECTION 0 dB = 1 µV
•MW/LW Section
Setting:
RADIO (BAND) button: MW or LW
30% amplitude
modulation by
400 Hz signal
•FM Section
Setting:
RADIO (BAND) button: FM
75 kHz frequency
deviation by 1 kHz signal
output level : as low as possible
•Connecting Level Meter (FM, MW and LW)
•Connecting DigitalVoltmeter (FM, MW and LW)
•Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
MW/LW IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
450 kHz
MW FREQUENCY COVERAGE
CHECK
Frequency Display 531 kHz 1,611 kHz
Reading on Digital voltmeter 1.0 ± 0.5 V 5.2 ± 0.6 V
Adjustment Part <confirmation> <confirmation>
MWTRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3-1 CT3
621 kHz 1,404 kHz
FM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T2
10.7 MHz
FM FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display 87.5 MHz 108 MHz
Reading on Digital voltmeter 1.6 ± 0.4 V 4.0 ± 0.3 V
Adjustment Part <confirmation> L2
FMTRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1 CT1
87.5 MHz 108 MHz
LW FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display 153 kHz 279 kHz
Reading on Digital voltmeter 0.6 ± 0.3 V 5.0 ± 0.1 V
Adjustment Part <confirmation> L4
LWTRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3-2 CT5
162 kHz 261 kHz
Adjustment Location: See page 16.

–16 –
TP
(RF)
TP
(RF)
–CD board (conductor side) –
TP(VT)
SG
TP
(VT)
–tuner board (conductor side) –
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 IC701 pin qg (or TP (RF))
and GND on CD board.
2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01)
3. Press the CD NXbutton.
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:
RF level :
0.9 –1.5 Vp-p
VOLT/DIV : 50 mV (10 : 1 probe in use)
TIME/DIV : 500 nS
When observing the eye pattern, set the oscilloscope for AC range
and raise vertical sensitivity.
TP
(VT)
IC1
IC2
CNP1
JW2
ANT1
FM
TELESCOPIC
ANTENNA
L1
CT1
FM
TRACKING
ADJUSTMENT L2
FM FREQUENCY
COVERAGE
ADJUSTMENT
T1
MW/LW IF
ADJUSTMENT
T2
FM IF
ADJUSTMENT
–tuner board (component side) –
LW
TRACKING
ADJUSTMENT L3-2
CT5
L3-1
CT3
MW
TRACKING
ADJUSTMENT
L4
LW FREQUENCY
COVERAGE
ADJUSTMENT

6-1. IC PIN DESCRIPTION
• IC501 CXP83620-022Q (SYSTEM CONTROL)
Pin No. Pin Name I/O Pin Description
1 C-SCOR I CD SCOR input
2 RMC I Sircs receiver input
3 MUTE O MUTE output H: Mute
4 ADJ O F TEX frequency division output
5 C-SCLK O CD SENSE read clock output
6 C-SENS I CD SENSE input
7 C-SQCK O CD Sub-Q read clock output
8 C-SQSO I CD Sub-Q data input
9 C-XRST O CD system reset output
10 C-CLOCK O CD system clock output
11 C-LATCH O CD system latch output
12 C-DATA O CD command data output
13 C-AGCCONT O CD AGC control output
14 R-COUNT I Tuner PLL data input
15 R-CLOCK O Tuner PLL clock output
16 R-DATA O Tuner PLL data output
17 R-LATCH O Tuner PLL latch output
18 V-LATCH O Volume latch output Not used. (Open)
19 V-DATA O Volume data output
20 V-CLOCK O Volume clock output
21 P-CON O System power control output H: PCON
22 REG CHK I Regulator check signal input
23 REC I Tape record signal input H: REC
24 SDA I/O EEPROM input/output
25 – 28 KEY-1 – 4 I Key input
29 MODE CHECK I Mode set input
30 RST I System reset input
31 EXTAL I Oscillation input (4.19 MHz)
32 XTAL O Oscillation output (4.19 MHz)
33 VSS — GND
34 VL O LCD drive port ON/OFF output
35 – 37 VLC3 – 1 O LCD drive voltage output
38 – 41 COM0 – 3 O LCD drive common output
42 – 58 SEG0 – 16 O LCD drive segment output
59 SEG17 O LCD drive segment output Not used. (Open)
60, 61 NC — Not used. (Open)
62 INIT O Initial set signal output
63 TONE O TONE control output L: TONE-Hi, H: TONE-Lo
64 MEGA BASS O MEGA BASS control output H: MEGA BASS off, L: MEGA BASS on
65 BT-CHK O Battery check input H: BT-CHK
66 MT-CONT O MT control input H: MT-CONT
67 ISS1 O ISS1 output H: ISS1
68 ISS2 O ISS2 output H: ISS2
69 TAPE O Tape function output H: Tape
70 RADIO O Tuner function output H: Radio
71 CD O CD function output H: CD
72 VDD — Power supply pin (+3.3 V)
73 TX O Oscillation output (153.6 kHz)
74 TEX I Oscillation input (153.6 kHz)
Pin No. Pin Name I/O Pin Description
75 NC — Not used. (Open)
76 A-MUTE O Audio mute output H: Mute
77 SCL O EEPROM clock output
78 EC I Event counter input
79 TC-PLAY I Tape play switch input L: Tape
80 C-DOOR I CD door open/close switch input L: Close
– 17 – – 18 –
6-2. CIRCUIT BOARDS LOCATION
SECTION 6
DIAGRAMS
CONTROL board
LCD board
SECONDARY board POWER board
PRE board
MAIN board
CD board
BATTERY board
HALF BATTERY board
TUNER board
SHILD board

CFD-922L
6-3. BLOCK DIAGRAM — CD SECTION —
– 19 – – 20 –
A
C
B
E
F
D
LD
PD
LD POWER
CONTROL
Q701
PD1
PD2
LD
PD
E
F
VC
12
CNP701
10
11
13
7
5
14
16
9
3
2
4
1
RFO
FE
TE
AGC CONT
8
7
10
LD ON
19
2
5
3
18
11
13
154
RF AMP
IC701
2
13
14
TRACKING
COIL
DRIVE
24
20
FOCUS
COIL
DRIVE
TFDR
3
TRDR
FFDR
23
FRDR
5
SFDR
6
SRDR
SLED
MOTOR
DRIVE
25
SPINDLE
MOTOR
DRIVE
SPIN
VREF
MUTE
T+
T–
17
18
F+
F–
12
11
SL+
SL–
15
16
SP+
SP–
TRACKING
COIL
FOCUS
COIL
OPTICAL PICK-UP
BLOCK
(KSS-213C)
M
M
M702
SLED
MOTOR
M701
SPINDLE
MOTOR
SLED/SPINDLE
MOTOR DRIVE,
TRACKING/FOCUS
COIL DRIVE
IC703
S702
(LIMIT)
RFAC
RFDC
FE
SE
TE
VC
CE
INTERNAL
BUS
EFM DEMODULATOR
CPU
INTERFACE
MDP XLON SENS SQSO SCOR SSTP SQCK DATA XLAT CLK SCLK XRST XTAO XTAI
D/A
INTERFACE
OVER
SAMPLING
DIGITAL
FILTER
&
SERIAL
IN
INTERFACE
SERVO
INTERFACE
&
SERVO AUTO
SEQUENCER
AOUT1
LOUT1
AOUT2
LOUT2
PWM
AMP
PWM
AMP
CD R
1
2
51
39
40
41
38
42
26 27 14 8 1 202 5 6 7 66 679 3
70
72
77
75
SYSTEM SERVO PROCESSOR,
DIGITAL SIGNAL PROCESSOR
IC702
13
70
80
6 8 7 12 11 10 5 91
X701
16.9344MHz
C-AGC
CONT
C-SENS
C-SQSO
C-SQCK
C-SCOR
C-DATA
C-LATCH
C-CLOCK
C-SCLK
C-XRST
C-DOOR
CD
RADIO
71
CD
SYSTEM CONTROL
IC501 (1/2)
RADIO
6V REG
Q513,514
CD
3.3V REG
Q511,512
3.3V REG
IC502
AUDIO 6VRA6V
COM 3.3VCD3.3V
65 BT-CHK
22 REG CHK
66 MT-CONT
S501
CD DOOR
OPEN/
CLOSE
3 3
3 2
3.3V
KH321
3 6 13 12 4 9 8 7 5
11
22
1
3
1
3
CNP902
POWER
SWITCH
Q951
POWER
SWITCH
Q952,953
AUDIO
6V REG
Q955
COM
3.3V REG
Q957
P. CONT
VDD
VDD
D955 D951 D952
VDD(SW)
COM 3.3V
AUDIO 6V
SECONDARY BOARD
AC-HI
VDD
CNB901(1/2)
CNP901
BATTERY
BOARD
POWER
BOARD
41
2
D901 - 904
T901
POWER
TRANSFORMER
CNJ901
AC IN
CNB901(2/2) CNP904
3
CD BOARD
04
MAIN BOARD (1/2)
HALF
BATTERY
BOARD
• Signal path
: CD
R-ch : same as L-ch.
LD ON
SWITCH
Q702
REG,AC
BATTERY
CHECK
Q501-504
SUB CODE
PROCESSOR
DIGITAL
CLV
TIMING
LOGIC
ASYMMETRY
CORRECTION
&
DIGITAL
PLL
OPERATIONAL
AMPLIFIER
ANALOG SWITCH
&
A/D
CONVERTER
TFDR
TRDR
FFDR
FRDR
SFDR
SRDR
30
31
32
33
28
29
SERVO
DSP
&
PWM
GENERATOR
27
15 12 5 6 14 9 10 11 13
11
7
TF
TR
FF
FR
SF
SR
FF
FR
SF
SR
TF
TR
VREF
43
CNP702(1/2)
CNP502(1/2)
D956
VDD
VDD(SW)
D509
D511
VREF
VREF
CNP702(2/2) CNP502(2/2) CNP505(1/3)
15 3 3
F902
CD L
VREF
DRY BATTERY
SIZE " D "
(IEC DESIGNATION R20)
6PCS,9V
4.5V
4.5V

6-4. BLOCK DIAGRAM — MAIN SECTION —
CFD-922L
– 21 – – 22 –
1
CD L
5
21 22 16
4
CNP301(1/3)
L-CH
R-CH
HRP301
RECORD/PLAYBACK
HEAD
HE301
ERASE HEAD
DET
ALC 2
RADIO L
18
15
L.LO
CNP301
(3/3)
R.LO
LINE
TAPE
R-CH
R-CH
VIN2
CNP505
(3/3)
VOUT2
LOGIC
CONTROL
5
CLOCK
4
DATA
VOLUME/SOUND CONTROL
IC302
POWER AMP
IC304
P.CONT
R-CH
SP301
SPEAKER
(L-CH)
SP302
SPEAKER
(R-CH)
J321
REF
L.LIN
L.RO
REC L.RAD
R.RAD
T301
REC BIAS OSC
Q301
REC
23
TAPE
69
V-CLOCK
V-DATA
P-CON
38–41 42–58 73•74 25–28
17 16 15 14
LIQUID CRYSTAL
DISPLAY PANEL
LCD501
SYSTEM CONTROL
IC501 (2/2)
20 19
3
21
MEGA BASS
64
COM0
|
COM3
SEG0
|
SEG16
R-LATCH R-CLOCK R-DATA R-COUNT
30
RST MUTE
KEY1
|
KEY4
31
EXTAL
32
XTAL
TX TEX
TUNER
X501
4.19MHz
X502
153.6kHz
RESET
IC503
3.3V
VOL
2-5
2-5
S601-604
S606-626
CNP601
CNP501
66
VDD (SW)
D601
OPR/BATT
29
MODE CHECK
62
INIT
3
Signal path
: FM
: AM
: TAPE PLAY
: TAPE REC
: CD
R-ch : same as L-ch.
CONTROL BOARD
04
PRE BOARD
2
REC/PB
PRE AMP
IC301
MAIN BOARD (2/2)
LCD BOARD
TUNER BOARD
11
5
6
5
MEGA
BASS
CONTROL
Q122
MODE
SWITCH
CONTROL
Q505,506
MODE
SWITCH
Q507
1-4
21-18
5-21
17-1
68
6
8
8
91
91
20
6
14 R.LIN
8R.IN
L.IN
9R.RO
i
CNP301(2/3)
CNP505(2/3)
A-MUTE
76
SDA
24
MUTE
Q124
LINE
AMP
Q121
SCL
77
TC-PLAY
79
M
TAPE
SWITCH
Q997
1
2
CNP551
CNP651
24
-1 -2
S301
(REC/PB)
REC
PB
AUDIO 6V
EEPROM
IC504
SDA
SCL
VDD(SW)
CNP322
1
2
3
4
S304
(TAPE PLAY)
M301
CAPSTAN/REEL
MOTOR
17
7
CD3.3V
CD R
3
10 5
10 5
ISS2
68
13
13
ISS1
67
12
12
AC-HI
ISS1
Q303
ISS2
Q302
KH504
(1/2)
5
2
1 2 3 4
11 12 20 19
KH503 KH504
(2/2)
CNP1
11 6
1
1
10
2
9
3
8
4
7
5
CE CL
DI
DO
AM IN FM IN XOUT XIN
13
MO/ST
10
IF IN
LPF2/MO-ST
LPF1/BAND
IF-OUT
ST-IND
OSC-OUT
9
BAND
7
BAND
8
ST-IND
18 LP-OUT
6MW/LW
AM
OSC
AM
MIX
FM
MIX
FM
OSC
AM RF-IN
FM
RF-IN
FM
IF-IN
AM
IF-IN
X1
75kHz
PLL
IC2
14 17 13 18
16 15 11
12
1920
22 4 6
7
10
2
2124
T1
T2
CF4
L2
L1 CT1
RA6V
RA6V
D1 D2
CT3
CT5
D3
-2
LW
-1
MW
CT3,L3-1
MW
TRACKING
CT5,L3-2
LW
TRACKING
L4
LW FREQUENCY COVERAGE
CT1,L1
FM
TRACKING
L2
FM
FREQUENCY
COVERAGE
T1
MW/LW
IF
T2
FM
IF
ANT1
FM
TELESCOPIC
ANTENNA
IF
BUFFER
AM
DET
FM
DET
IF CUT
AF
BUFFER
FM
MPX MUTE
AM HIGH
CUT
Q12
IF CUT
R
LR-CH
RA6V
QUAD
FM/MW/LW FRONT-END, IF DET,
FM STEREO DEMODULATOR
IC1
L4
RA6V
CF2
RA6V
RA6V
RA6V
MW SW
Q41
L3
MW/LW
FERRITE-ROD
ANTENNA
LW SW
Q43
LW SW
Q44
VDD(SW)
REG
Q61
MW SW
Q42
MW/LW
Q14
RA6V
AM
OSC
MIX-OUT
FN
RF-OUT FN OSC
DET-OUT MPX-IN
IF REQ
Q510

– 23 – – 24 –
6-5. PRINTEDWIRING BOARD —TUNER SECTION — • Refer to page 18 for Circuit Boards Location.
1
A
B
C
D
E
F
G
H
I
J
234567
04
TP(VT)
DSG
-1
MW
-2
LW
C29
Note on PrintedWiring Boards:
•X: parts extracted from the component side.
•f: internal component.
•b: Pattern from the side which enables seeing.
CFD-922L
(Page 34) (Page 33)
D1 E-4
D2 E-4
D3 F-4
D10 B-3
D11 B-3
IC1 D-5
IC2 H-5
Q12 F-5
Q14 H-3
Q41 G-3
Q42 E-3
Q43 G-3
Q44 G-4
Q61 G-4
•Semiconductor
Location
Ref.No. Location