Sony PMC-107L Service manual
PMC-107L
SERVICE MANUAL
Ver 1.2 1999. 07
CD
Section
TC
Section
AEP Model
UK Model
Singapore Model
Model Name Using Similar Mechanism CFD-222L
CD Mechanism Type KSM-213CDM
Optical Pick-up Name KSS-213C
Model Name Using Similar Mechanism NEW
Tape Transport Mechanism Type MF-107
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
FM AEP, UK, Singapore model 87.6 - 107 MHz
Italian model 87.5 - 108 MHz
East European model 65 - 74 MHz
87.5 - 108 MHz
MW 531 - 1,602 kHz
LW 153 - 279 kHz
IF
FM: 10.7 MHz
MW/LW: 450 kHz
Aerials
FM: Wire aerial
MW/LW: External aerial
SPECIFICATIONS
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 (4 in.) dia.,
3 ohms, cone type (2)
Outputs
Headphones jack (stereo minijack)
For 16 - 68 ohms impedance headphones
Maximum power output
5 W + 5 W
Power requirements
For personal component system:
230 V AC, 50 Hz
For remote control:
3 V DC, 2 R6 (size AA) batteries
Power consumption
AC 23 W
– Continued on next page –
PERSONAL COMPONENT SYSTEM
MICROFILM
– 1 –
Dimensions (incl. projecting parts)
Player :Approx. 160 × 245 × 215 mm (w/h/d)
(6 3/8 × 9 3/4 × 8 1/2 inches)
Speaker :Approx. 150 × 245 × 175 mm (w/h/d)
(6 × 9 3/4 × 7 inches)
Mass
Player :Approx. 2.6 kg (5 lb. 12 oz.)
Speaker :Approx. 1.1 kg (2 lb. 7 oz.)
Supplied accessories
Remote control (RMT-C107AD) (1)
(Except East European model)
Remote control (RMT-C107A) (1)
(East European model)
MW/LW loop aerial (1)
Conversion plug adaptor (1) (UK)
Design and specifications are subject to change without
notice.
CHUCK PLATE JIG ON REPAIRING
On repairing CD section, playing a disc without the CD lid, use
Chuck Plate jig.
• Part No. of Chuck Plate jig : X-4918-255-1
This Compact Disc player is
classified as a CLASS 1
LASER product.
The CLASS 1 LASER
PRODUCT label is located
on the bottom exterior.
CAUTION
Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous 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.
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
1. Open the CD lid.
2. Push on PUSH SWITCH (SW701) as following figure.
3. 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 once for the focus search.
Push on SW701 in the
arrowed direction with
a screwdriver, etc.
SW701
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 pickup block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
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 P ARTS WHOSE
P ART NUMBERS APPEAR AS SHOWN IN THIS MANU AL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
– 2 –
TABLE OF CONTENTS
1. GENERAL
Playing a CD ........................................................................... 4
Listening to the radio............................................................... 5
Playing a tape .......................................................................... 6
Recording on a tape ................................................................. 7
2. DISASSEMBLY
2-1. Front Cabinet Assy..............................................................8
2-2. CD Chassis Assy ................................................................. 9
2-3. Power Board........................................................................ 9
2-4. Main Board ....................................................................... 10
2-5. CD Board .......................................................................... 10
2-6. Optical Pick-up ................................................................. 11
2-7. Mechanism Deck Block ....................................................11
2-8. Control Board.................................................................... 12
3. MECHANICAL ADJUSTMENTS............................... 13
4. ELECTRICAL ADJUSTMENTS
Tape Section .......................................................................... 13
Tuner Section......................................................................... 14
CD Section ............................................................................ 16
5. DIAGRAMS
5-1. IC Pin Description............................................................. 20
5-2. Circuit Boards Location .................................................... 22
5-3. Block Diagram –CD Section–........................................... 23
5-4. Block Diagram –Main Section–........................................ 25
5-5. Printed Wiring Boards –CD Section– ............................... 27
5-6. Schematic Diagram –CD Section–.................................... 29
5-7. Printed Wiring Boards –Panel Section– ............................ 31
5-8. Schematic Diagram –Panel Section– ................................ 33
5-9. Printed Wiring Boards –Main Section– ............................ 35
5-10. Schematic Diagram –Main Section (1/2)– ........................ 37
5-11. Schematic Diagram –Main Section (2/2)– ........................ 39
6. EXPLODED VIEWS
6-1. Rear Cabinet Section......................................................... 44
6-2. Front Cabinet Section........................................................ 45
6-3. Upper Cabinet Section ...................................................... 46
6-4. Cassette Mechanism Section-1 ......................................... 47
6-5. Cassette Mechanism Section-2 ......................................... 48
6-6. Cassette Mechanism Section-3 ......................................... 49
6-7. Cassette Mechanism Section-4 ......................................... 50
6-8. Optical Pick-up Section..................................................... 51
6-9. Speaker Section ................................................................. 52
7. ELECTRICAL PARTS LIST......................................... 53
– 3 –
SECTION 1
GENERAL
This section is extracted
from instruction manual.
– 4 –
– 5 –
– 6 –
– 7 –
SECTION 2
4
DISASSEMBLY
• The equipment can be removed using the following procedure.
Set Front cabinet assy CD chassis assy Main board
Power board CD board Optical pick-up
Mechanism deck block
Control board
Note : Follow the disassembly procedure in the numerical order given.
2-1. FRONT CABINET ASSY
3
BVTP 3x14
1
BVTP 3x14
2
BVTP 3x1
0
front cabinet assy
4
CNP303
– 8 –
8
CNP308
9
7
CNP306
CNP702
5
CNP301
6
CNP302
2-2. CD CHASSIS ASSY
0
5
CD chassis assy
3
wire
2
BVTP 3x10
1
BVTP 3x1
2-3. POWER BOARD
1
CNP902
4
CNP901
2
BVTP 4x16
– 9 –
3
POWER board
2-4. MAIN BOARD
3
MAIN board
1
CNP304
2-5. CD BOARD
4
BVTP 3x10
3
connector
2
CNP703
6
CD board
5
BVTP 3x10
1
CNP701
2
BVTP 3x10
– 10 –
2-6. OPTICAL PICK-UP
3
optical pick-up
2
screws (2.6x16)
1
screws (2.6x16)
3
BVTP 3x8
2
BVTP 3x8
4
mechanism deck block
1
Open the cassette lid.
2-7. MECHANISM DECK BLOCK
– 11 –
2-8. CONTROL BOARD
1
BVTP 3x8
3
CNP803
4
CONTROL board
2
BVTP 3x8
– 12 –
SECTION 3
phones jack
set
32
Ω
test tape
WS-48A
(3 kHz, 0 dB)
digital frequency
counter
MECHANICAL ADJUSTMENTS
SECTION 4
ELECTRICAL ADJUSTMENTS
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 demagnetizer. (Do not bring the head magnetizer close to the erase head.)
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
5. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
Torque Measurement
Mode Torque meter Meter reading
FWD CQ-102C
FWD
Back Tension (0.021 – 0.076 oz • inch)
FF CQ-201B
REW CQ-201B
CQ-102C
30 – 70 g • cm
(0.42 – 0.97 oz • inch)
1.5 – 5.5 g • cm
more than 60 g • cm
(more than 0.83 oz • inch)
more than 60 g • cm
(more than 0.83 oz • inch)
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
T ape T ension Measurement
Mode Tension meter Meter Reading
FWD CQ-403A
more than 100 g
(more than 3.53 oz)
1. Make sure that the value indicated on the frequency counter
falls into the specification.
2. If out of specification, adjust so that the value on the frequency
counter is 3 kHz.
Adjustment V alue:
Digital frequency counter
2,985 to 3,015 Hz
Adjust so that the frequency at the beginning and that at the end of
tape winding are between 2,955 to 3,045 Hz.
Adjustment Location:
TAPE SPEED
Adjustment
– 13 –
TUNER SECTION 0 dB = 1 µV
)
• FM Section
Setting:
BAND switch: FM
FM RF signal
generator
µ
F
0.01
22.5 kHz frequency
deviation by 400 Hz signal
output level : as low as possible
TP (FM ANT)
set
FM FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display
Reading on Digital voltmeter
87.5 MHz
(65 MHz)
108 MHz
1.8 ± 0.2 V 5.6 ± 0.2V
(0.9 ± 0.2 V) (7.3 ± 0.2 V)
Adjustment Part L6 <confirmation>
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L5 CT1
87.5 MHz (68 MHz) 108 MHz (102 MHz)
• MW/LW Section
Setting:
BAND switch: MW or LW
AM RF signal
generator
30% amplitude
modulation by
400 Hz signal
Put the lead-wire
antenna close to
the supplied MW/LW
loop antenna.
• Connecting Level Meter (FM, MW and LW)
level meter
(range: 0.5–5 V ac
32
Ω
set
phones jack
• Connecting Digital Voltmeter (FM, MW and LW)
digital
voltmeter
MW FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display 531 kHz 1,611 kHz
Reading on Digital voltmeter 0.9 ± 0.1 V 5.6 ± 0.2V
Adjustment Part L2 CT2
MW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L9 CT4
621 kHz 1,404 kHz
LW FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display 153 kHz 279 kHz
Reading on Digital voltmeter 0.6 ± 0.1 V 5.3 ± 0.2V
Adjustment Part CT3 <confirmation>
L W TRA CKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L10 CT5
162 kHz 261 kHz
( ) : East European model
Adjustment Location: See page 15.
Ω
100 k
TP (VT)
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
– 14 –
Adjustment Location: main board
–main board (component side)–
TP
(FM ANT)
TP (VT)
R31
FM
TRACKING
Adjustment
CT1
L5
MW
TRACKING
Adjustment
L6
FM
FREQUENCY
COVERAGE
Adjustment
FREQUENCY
COVERAGE
Adjustment
MW
L9
CT4
L2
CT2
CT3
LW
FREQUENCY
COVERAGE
Adjustment
L10
CT5
LW
TRACKING
Adjustment
– 15 –
CD SECTION
Notes on Adjustment
1. Perform Traver se adjustment in test mode.
After adjustment, be sure to release test mode.
2. Perform adjustments in the order given.
3. Use the disc (YEDS-18, Part No. 3-702-101-01) only when so
indicated.
4. Short the both sides of R714 on the CD board for stop operation
of anti-shock circuit. (See page 19.)
• Switch position
FUNCTION switch : CD
• In case of Test Mode
1. Short the solder bridge the TP801 (TEST) on the key board.
2. Insert the AC power plug.
• Release the Test Mode
Release the shorted solder bridge the TP801 (TEST), the test mode
is release.
–key board (conductor side) –
Before Adjustment
Put the set into test mode and perform the following checks. Repair
if there are any problems.
• Sled Motor Check
Press the ± , ≠ buttons and confirm that the optical pick-up
moves smoothly from the innermost to outermost circumference
and back smoothly and with no catching or abnormal noises.
± : Optical pick-up moves to the outer circumference
≠ : Optical pick-up moves to the inner circumference
• Focus Search Check
1. Push the fl button. (Focus search operation is performed
continuously.)
2. Look at the optical pick-up objective lens and confirm the it moves
up and down smoothly, with no catching or abnormal noises.
3. Push the π button.
Confirm that focus search operation stops. If it does not, push the
π button again longer.
Traverse Adjustment
This adjustment is to be done when the optical pick-up block is
replaced.
Procedure:
oscilloscope
(DC range)
CD board
TP801
(TEST)
TP (TE)
TP (VC)
1. Connect the oscilloscope between TP (TE) and TP (VC).
2. Put the set into test mode.
3. Push the CD lid to open and insert disc (YEDS-18).
4. Close the CD lid.
5. Press the ± and ≠ buttons to move the optical pick-up to
the center.
6. Push the fl button.
7. Push the π button.
8. Push the fl button.
9. Adjust RV702 so that the oscilloscope traverse waveform is
symmetrical, as shown in the figure below.
10. Release test mode after adjustment is completed.
A
0V A=B
B
Adjustment Location : See page 19.
– 16 –
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