Model Name Using Similar Mechanism PMC-D305L
CD Mechanism TypeKSM-213CDM
Optical Pick-up NameKSS-213C
Model Name Using Similar Mechanism NEW
T ape Transport Mechanism TypeMF-D307
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/–2.5 dB
Wow and flutter
Below measurable limit
Radio section
Frequency range
FMExcept Italian,
East European model87.6 - 107 MHz
Italian model87.5 - 108 MHz
East European model65 - 74 MHz
8. ELECTRICAL PARTS LIST.........................................66
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 PAR TS WHOSE
P ART NUMBERS APPEAR AS SHOWN IN THIS MANU AL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
– 2 –
Page 3
SECTION 1
SERVICING NOTES
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
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.
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
1. Turn POWER switch on with to disc inserted and press
FUNCTION button to CD position.
2. Open the lid (CD).
3. Turn on S801 as following figure.
4. Press the ( (CD) button.
5. Confirm the laser diode emission while observing the objecting
lens. When there is no emission, Auto Po wer Control circuit or
Optical Pick-up is broken.
Objective lens moves up and do wn three times for focus search.
S801
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.
This Compact Disc player is classified as a
CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT table is
location on the rear exterior.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation exposure.
HOW TO CHANGE THE FM CERAMIC FILTERS
This model is used three ceramic filters of CF1, 2 and CF3.
Therefore, the ceramic filters must change three pieces together since
it’s supply three pieces in one package as a spare parts.
– 3 –
Page 4
2-1. LOCATION OF CONTROLS
SECTION 2
GENERAL
– upper side view –
5
– front side view –
7
8
9
10
11
12
13
14
1
234
6
16
17
18
19
20
21
15
1. 6 OPEN/CLOSE (CD) button
2. PLAY MODE MONO/ST/ISS button
3. PGM SET/AUTO PRESET button
4. SOUND button
5. 2 (Headphones) jack
6. Display window
7. OPERATE (power) button
8. Remote sensor window
9. CD operation buttons
( (Play) button
P (Pause) button
p (Stop) button
10. FUNCTION button
11. RADIO operation buttons
PRESET – button
BAND button
PRESET + button
22
2324
12. DIR MODE button
13. r/P (Recording/pause) button
14. TAPE operation buttons
9 (Reverse) button
p (Stop) button
( (Play) button
15. OPTICAL DIGITAL OUT (CD) jack
16. VOLUME +/– button
17. DISPLAY/ENTER button
18. =/+, TUNE +/– button
19. 0/) button
20. 6 PUSH (cassette holder open) button
21. Cassette holder
22. OPEN $ knob
23. LINE OUT jack
24. LINE IN jack
– 4 –
Page 5
SECTION 3
DISASSEMBLY
• The equipment can be removed using the following procedure.
SetCabinet (rear)Case (lower) sectionCabinet (CD) sectionCD, Control board
2. Demagnetize the record/playback/erase head with a head demagnetizer. (Do not bring the head demagnetizer 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
ModeTorque MeterMeter Reading
FWD
FWD2.0 – 6.0 g•cm
Back tension(0.028 – 0.076 oz•inch)
REV
REV2.0 – 6.0 g•cm
Back tension(0.028 – 0.076 oz•inch)
FF, REWCQ-201B
CQ-102C
CQ-102RC
30 – 70 g•cm
(0.42 – 1.02 oz•inch)
30 – 70 g•cm
(0.42 – 1.02 oz•inch)
80 – 170 g•cm
(1.12 – 2.38 oz•inch)
TAPE SECTION 0 dB = 0.775 V
1. The adjustments should be performed in the order given in the
service manual. (As a general rule. Playback circuit adjustment
should be completed before performing recording circuit adjustment.)
2. The adjustments should be performed for both L-ch and R-ch
unless otherwise indicated.
Standard Output Level
SP OUTPHONES
Load impedance6 Ω32 Ω
Output level0.775 V (0 dB)0.25 V (–10 dB)
Frequency difference between the beginning and the end of the tape
should be within 1% (30 Hz).
Adjustment Location:
adjustable
resistor
M691
– 10 –
Page 11
Record/Playback Head Azimuth Adjustment
k
Procedure:
1. Mode: playback
test tape
P-4-A063
(6.3 kHz, –10 dB)
set
2
level meter
Ω
32
+
–
(headphones) jac
2. Turn the adjustment screw for the maximum output levels. If
these levels do not match, turn the adjustment screw
until both
of output levels match together within 1 dB.
Adjustment Location:
forward
L-CH
peak
screw
position
3. Phase Check
Mode: playback
test tape
P-4-A063
(6.3 kHz, –10 dB)
R-CH
peak
L-CH
set
R-CH
within
1dB
output
level
32
32
2
(headphones) jack
Screen pattern
L-CH
peak
Ω
Ω
R-CH
peak
oscilloscope
H
V
+
+
–
–
within
1dB
screw
angle
reverse
screwdriver
in phase 45
°90°
GoodWrong
135°180
°
4. After the adjustment, lock the screws with locking compound.
– 11 –
Page 12
TUNER SECTION 0 dB = 1 µV
)
Precautions in Repairing
Note : As a tuner unit (TU1) is difficult to repair if faulty,
replace it with new one.
• FM Section
Setting:
FUNCTION button: FM
FM RF signal
generator
0.01
22.5 kHz frequency
deviation by 400 Hz signal
output level : as low as possible
• MW/LW Section
Setting:
FUNCTION button: MW or LW
AM RF signal
generator
30% amplitude
modulation by 400 Hz signal
output level : as low as possible
• Connecting Level Meter (FM, MW and LW)
32
set
2
(headphones) jack
EXT ANT FM
jack (CNP2)
µ
F
set
Put the lead-wire
antenna close to
the set.
level meter
(range: 0.5-5 V ac
Ω
FM FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display
Reading on Digital voltmeter
87.5 MHz
(65 MHz)
108 MHz
1.3 V or more9.0 V or less
(1.0 V or more) (10.0 V or less)
Adjustment Part<confirmation> <confirmation>
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
<confirmation><confirmation>
87.5 MHz (68 MHz)108 MHz (102 MHz)
MW FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display531 kHz1,611 kHz
Reading on Digital voltmeter0.85 ± 0.5 V6.8 ± 1.5 V
Adjustment Part<confirmation> <confirmation>
MW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3CT4
621 kHz1,404 kHz
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
CFT1
450 kHz
LW FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display153 kHz279 kHz
Reading on Digital voltmeter0.6 ± 0.4 V7.5 ± 0.5 V
Adjustment Part<confirmation>L4
• Connecting Digital Voltmeter (FM, MW and LW)
–tuner board (conductor side)–
digital
voltmeter
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.
L W TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L5CT5
162 kHz261 kHz
( ) : East European model
Adjustment Location: TUNER board (See page 13.)
– 12 –
Page 13
Adjustment Location:
T
–tuner board (component side)–
CFT1
AM IF
ADJUSTMENT
IC1
L4
LW
FREQUENCY
COVERAGE
ADJUSTMENT
TU1
CT4 L3
MW
TRACKING
ADJUSTMENT
CT5
L5
LW
TRACKING
ADJUSTMEN
– 13 –
Page 14
CD SECTION
Notes on Adjustment
1. Perform adjustment in test mode.
After adjustments, 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.
How to Put the Set into Test Mode
1. Disconnect an AC plug cord. (Power is not applied to the set.)
2. Solder across the TEST1 terminal.
3. Close the lid (CD).
4. Connect an AC plug cord.
[SW (A) BOARD] (Conductor Side)
TEST 1
Terminal
E-F Balance Adjustment
This adjustment is to be done when the optical pick-up is replaced.
Procedure:
oscilloscope
(DC range)
CD board
TP (TRACKING-Y)
TP (VC)
+
–
1. Connect the oscilloscope to TP (TRACKING-Y) and TP (VC)
on the CD board.
2. Insert the disc (YEDS-18) in and close the lid (CD).
3. Put the set into test mode.
4. Press the + and = buttons to move the optical pick-up to
the center.
5. Press the ( button.
From focus searching, focus is turned ON while entering
CLV drawing-in mode. Tracking and sled are turned OFF.
6. Adjust R V703 so tha t the oscilloscope traverse wav eform is symmetrical, as shown in the figure below.
Note: Take long sweep time
VOLT/DIV: 0.2 V (with the 10:1 probe in use.)
TIME/DIV: 1 ms
for easy monitoring.
How to Release the Test Mode
1. Be sure to disconnect the AC plug cord and remove the solder
bridge at the TEST1 terminal connected before in setting.
2. The set thus becomes available for normal operation
Before Beginning 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. Press the ( button. (Focus search operation is performed continuously.)
2. Look at the optical pick-up objective lens and confirm that it
moves up and down smoothly, when no catching or abnormal
noises.
3. Press the p button.
Confirm that focus search operation stops. If it does not , press
the p button again longer.
A
0 V
A=B
B
0 V
Adjustment value: 0.4 ± 0.2 Vp-p (A + B)
7. Release the test mode after adjustment is completed.
Adjustment Location: CD board (See page 17.)
A
B
A=B
Note: When the malfunction is occurred by mis-passing other keys, turn
off the power and check again from making the test mode.
– 14 –
Page 15
Focus Bias Adjustment
This adjustment is to be done when the optical pick-up is replaced.
Procedure:
oscilloscope
(AC range)
CD board
TP (RF)
TP (VC)
+
–
1. Connect the oscilloscope TP (RF) and TP (VC) on the CD board.
2. Insert the disc (YEDS-18) in and close the lid for CD.
3. Put the set into test mode. (See page 14.)
4. Press + and = buttons to move the optical pick-up to the
center. (Move the optical pick-up to the music area on the disc
to enable easy visibility of the eye pattern.)
5. Press the ( button.
From focus searching, focus is turned ON while entering
CLV drawing-in mode. Tracking and sled are turned OFF.
6. Press the ( button.
[Both tracking and sled are turned ON.]
7. Adjust RV701 so that the oscilloscope waveform is as sho wn 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)
VOLT/DIV : 0.2 V (With the 10:1 probe in use)
TIME/DIV : 500 ns
1.3
±
0.2 Vp-p
REFERENCE
Focus/Tracking Gain Adjustment
A frequency response analyzer is necessary in order to perform this
adjustment exactly .
However , this gain has a mar gin, so e ven if it is slightly off, there is
no problem. Therefore, do not perform this adjustment.
Focus/tracking gain determines the pick-up follow-up (vertical and
horizontal) relative to mechanical noise and mechanical shock when
the 2-axis device operate.
However, as these reciprocate, the adjustment is at the point where
both are satisfied.
• When gain is raised, the noise when the 2-axis device operates
increases.
• When gain is lowered, mechanical shock and skipping occurs
more easily.
• When gain adjustment is off, the symptoms below appear.
Gain
Symptoms
• The time until music starts becomes
longer for p→( on automatic
selection.lowlow or high
(=, + buttons pressed.)
(Normally takes about 2 seconds.)
• Music does not start and disc
continues to rotate for p→( or
automatic selection.
(=, + buttons pressed.)
• Sound is interrupted during PLAY.
Or time counter display stops—low
progressing.
• More noise during 2-axis device
operation.
FocusTracking
—low
highhigh
When observing the eye pattern, set the oscilloscope for AC
range and raise vertical sensitivity.
8. Release the test mode after adjustment is completed.
Adjustment Location: CD board (See page 17.)
– 15 –
Page 16
The following is a simple adjustment method.
– Simple Adjustment –
Note:Since exact adjustment cannot be performed, remember the posi-
tions of the controls before performing the adjustment. If the positions after the primary adjustment are only a little different, return
the controls to the original position.
oscillosope
(DC range)
CD board
8. Connect the oscilloscope to TP (TRACKING-Y) and TP (VC)
on the CD board.
9. Adjust RV704 so that the waveform is as shown in the figure
below. (tracking gain adjustment)
VOLT/DIV: 1 V
TIME/DIV:2 ms
0 V
TP (FOCUS-Y)
TP (TRACKING-Y)
TP (VC)
+
–
Procedure:
1. Keep the set horizontal.
If the set is not horizontal, this adjustment cannot be performed
due to the gravity against the 2-axis device.
2. Connect the oscilloscope TP (FOCUS-Y) and TP (VC) on the
CD board.
3. Insert the disc (YEDS-18) in and close the lid for CD.
4. Put the set into test mode. (See page 14.)
5. Press the ( button.
From focus searching, focus is turned ON while entering
CLV drawing-in mode. Tracking and sled are turned OFF.
6. Press the ( button.
[Both tracking and sled are turned ON.]
7. Adjust RV702 so that the waveform is as shown in the figure
below. (Focus gain adjustment)
VOLT/DIV: 100 mV
TIME/DIV:2ms
100 mV
0 V
• Inconnect Examples (DC level changes more than on adjusted
waveform)
• Incorrect Examples (fundamental wave appears)
low tracking gain
VOLT/DIV: 1 V
TIME/DIV: 2ms
0 V
high tracking gain
high fundamental wave
than for low gain
VOLT/DIV: 1 V
TIME/DIV: 2ms
0 V
Note:
VOLT/DIV: with the 10:1 probe in used.
10. Release test mode after adjustment is completed.
• IC801 CXP83120A-022Q (SYSTEM CONTROL, LCD DRIVE) (EXCEPT East European Model)
• IC801 CXP83120A-031Q (SYSTEM CONTROL, LCD DRIVE) (East European Model)
Pin No.Pin NameI/OPin Description
1AC CHKIAC check input
2C-SCORICD-SCOR input
3RMCIRemote commander input
4C-XRSTOCD system reset output
5C-XLATOCD DSP (IC702) command latch output
6C-DATOCD DSP (IC702) command data output
7C-CLKOClock output for CD DSP (IC702) command
8C-DOORIOpen/close detection input (“L”: close, “H”: open)
9328/332I328/332 select input (Fixed at “H”.)
10C-SENCICD-SENS input
11C-SQCKOClock output for CD SUBQ
12C-SQSOICD SUBQ input
13T-BIASITape REC BIAS input
14——Not used (Open)
15T-RECITape REC input
16T-SOLOPlunger control output
17T-MODEOHEAD switching output
18T-AMSIAMS sensitivity switching
19T-MCONOMotor control output (“H”: Motor ON)
20P-CONOPower on/off control output
21V-CLKOVolume clock output
22V-DATOVolume data output
23V-CEOElectrical volume (IC302) chip enable output
24R-STIStereo detection input
25R-COUNTITuner PLL IC count input
26R-DATOTuner PLL IC data output
27R-CLKOTuner PLL IC clock output
28R-CEOTuner PLL IC chip enable output
299K/10KI9K/10K select input (Not used.)
30T-STATITape detection input
31 – 34KEY-0 – 3IKey return signal input
35INITOInitial setting output (East European model)
36SIMUKEIDestination setting terminal
37SFCOShift clock ON/OFF out
38RSTIReset input
39EXTAL1IClock oscillation input (4.19 MHz)
40XTAL1OClock oscillation output (4.19 MHz)
41VSS—Ground (for A/D converter)
42XTAL2OClock oscillation output (Open)
43EXTAL2IClock oscillation output (Fixed at “L”.)
44AVREFIReference voltage input (for A/D converter)
45AVSS—Ground (for A/D converter)
46VLOLCD bias resistor current control terminal (Cut off at standby)
47 – 49VLC3 – 1—LCD bias power supply terminal
50 – 53COM0 – 3OLCD common signal output terminal
54 – 77SEG0 – 23OLCD segment signal output terminal
78 – 84NC—Not used. (Open)
85 – 87——Not used. (Open)
88BL-CONTOLCD Back light control output
89VDD—Power supply (+5 V)
– 23 –
Page 22
Pin No.Pin NameI/OPin Description
90NC—Connected to the power supply.
91VSS—Ground
92TXOCrystal connection for clock oscillation. (32.768 kHz)
93TEXICrystal connection for clock oscillation. (32.768 kHz)
94C-MUTEOMute output for CD.
95B-MUTEOMute output for Tuner.
96A-MUTEOMute output for Audio.
97ISS1IISS1 switch input
98ISS2IISS2 switch input
99T-ENDITape end detection input
100NC—Not used. (Open)
– 24 –
Page 23
6-5. CIRCUIT BOARDS LOCATION
d
– Main Section –
CONTROL board
HEADPHONE board
LAMP board
SW (A) board
HEAD board
SW (B) board
CD board
CD MOTOR board
AUDIO board
SW board
LINE board
– Speaker (L) Section –
TERMINAL board
TUNER board
JACK board
AMPLIFIER boar
– 25 –
POWER board
Page 24
6-7. SCHEMATIC DIAGRAM — TUNER SECTION —
• IC Block Diagrams
IC1 TA2008AN
222324
PMC-D307L
181314192021
1716
15
• Wavef orms
1
IC1
2
IC2
1
2.2µs
(VCO)
!£
75kHz
(X OUT)
1.4Vp-p
1.4Vp-p
AM
RF
FM
RF
IC2 BU2615S
2
XIN
1
XOUT
16
FMIN
15
AMIN
FM
MIX
FM
AM
OSC
OSC
AM
MIX
REFERENCE DIVIDER
PRESCALERMAIN COUNT
AGC
1/8DIV
FM
IF
BUFFBUFF
IF
BUFFAFBUFF
AM
DET
LEVEL
AM
DET
IF
PHASE
DET
ULLOCK
BUFFER
P5
AM/FM
ST/MONO
SW
FM
DETSTDET
FM MPX
MUTE
101112987654312
19
PD1
PD2/P5
11
18
VDD1
17
VDD2
VSS
20
3
CE
4
CK
5
DA
6
CD
7
P0
8
P1
14
P2
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and 1/
specified.
¢
•
: internal component.
4
W or less unless otherwise
• C : panel designation.
• U : B+ Line.
• H : adjustment for repair.
• Voltage and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
() : MW
<< >> : LW
SHIFT REGISTER LATCH
I/O
CTL
20BIT COUNT
12109
P3
P4
P6
IF COUNT
CTL
• Voltages are taken with a VOM (Input impedance 10 M Ω).
Voltage variations may be noted due to normal production tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F: FM
f: MW/LW
IF IN
13
– 29 –– 30 –– 31 –
Page 25
6-9. SCHEMATIC DIAGRAM — CD SECTION — • Refer to page 55 for IC Block Diagrams.
• Wavef orms
1
IC701 #¡ (RFO)
2
IC701
3
IC701
4
IC702
5
1.3±0.2Vp-p
Approx. 50mVp-p
(TI)
$¢
Approx. 50mVp-p
(FI)
2
22.6µs
(LRCK)
@º
PMC-D307L
5Vp-p
6.7Vp-p
280ns
@™
(BCK)
IC702
6
4.8Vp-p
240ns
IC702
(XPCK)
@∞
7
4.8Vp-p
16.9344MHz
IC702
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and 1/
specified.
Note: The components identified by mark ! or dotted line
with mark ! are critical for safety.
Replace only with part number specified.
• U : B+ Line.
• H : adjustment for repair.
• Voltage and waveforms are dc with respect to ground
under no-signal conditions.
no mark : CD
• V oltages are taken with a V OM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J: CD
c : digital out
(XTAO)
#∞
4
W or less unless otherwise
– 35 –– 36 –– 37 –
Page 26
6-11. SCHEMATIC DIAGRAM — MAIN SECTION — • Refer to page 57 for IC Block Diagrams.
PMC-D307L
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and 1/
specified.
• C : panel designation.
• U : B+ Line.
• Voltages are dc with respect to ground under no-signal
(detuned) conditions.
no mark : FM
() : PB
<< >> : REC
[] : CD
• Voltages are taken with a V OM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production tolerances.
• Signal path.
F: FM
E: PB
a : REC
L : LINE IN
J: CD
c : digital out
: Impossible to measure
∗
4
W or less unless otherwise
– 41 –– 42 –– 43 –
Page 27
6-13. SCHEMATIC DIAGRAM — CONTROL SECTION —
• Wavef orms
1
4.19MHz
IC801
2
32.768kHz
IC801
(XTAL1)
$º
(£
PMC-D307L
4.9Vp-p
3Vp-p
(TEX)
– 47 –– 48 –– 49 –
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and 1/
specified.
• C : panel designation.
• U : B+ Line.
• Voltages and wavef orms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
() : PB
<< >> : REC
[] : CD
• V oltages are taken with a V OM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production tolerances.
• Circled numbers refer to waveforms.
• Abbreviation
EE: East European model.
4
W or less unless otherwise
Page 28
6-15. SCHEMATIC DIAGRAM — POWER AMPLIFIER SECTION —
PMC-D307L
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and 1/
specified.
• 2 : nonflammable resistor.
• C : panel designation.
Note: The components identified by mark ! or dotted line
with mark ! are critical for safety.
Replace only with part number specified.
• U : B+ Line.
• Voltages and wav eforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
• Voltages are taken with a V OM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production tolerances.
• Signal path.
F: FM
4
W or less unless otherwise
– 53 –– 54 –
Page 29
• IC Block Diagrams
– CD Section –
IC701 CXA1782BQ
PHD2
PHD1
3534
PHD
–
+
–
36
LD
33
RF M
32
+
–
+
–
RF O
31
–
+
RF I
30
29CP28
CB
+
CC1
CC2
27
FOK
2526
–
+
+
–
APC
–
+
RF IV AMP1
–
FOK
LEVELS
–
+
++
+
–
––
MIRR
DFCT
24 SENS
IIL
+
–
TTL
23 C. OUT
22 XRST
+
RF IV AMP2
37FE BIAS
+
–
38F
–
FE AMP
TTL
IIL
• IIL DATA RESISTOR• INPUT SHIFT RESISTOR
• ADDRESS DECODER
• OUTPUT DECODER
TTL
21 DATA
20 XLT
IIL
19 CLK
+
F IV AMP
39E
–
+
+
40EI
E IV AMP
TE AMP
–
–
+
FZC COMP
–
+
BAL1
BAL2
BAL3
41VEE
42TEO
TOG1
TOG2
TOG3
43LPFI
44TEI
45ATSC
46TZC
47TDFCT
48VC
• WINDOW COMP
ATSC
DFCT
–
+
–
+
+
–
TZC COMP
DFCT
TM1
FS4
TOG1-3FS1-4TG1-2TM1-7PS1-4
BAL1-3
+
+
––
• TRACKING
TG1
FS1
• PHASE
COMPENSATION
HPF COMPLPF COMP
• FCS PHASE
COMPENSATION
FS2
+
–
TM7
TG2
TM6
TM5
TM4
TM3
• ISET
–
+
TM2
+
–
• F SET
18 VCC
17 ISET
16 SL 0
15 SL M
14 SL P
1312TA O
TG2
11
FSET
TA M
3
2
1
FEI
FEO
FDFCT
4
FGD
5
FLB
6
FE O
FE M
SRCH
TGU
9
8
7
10
– 55 –
Page 30
IC702 CXD2507AQ
XLON
SPOD
SPOC
SPOB
SPOA
CLKO
VDD
XLTO
DATO
CNIN
SEIN
CLOK
52535455565758596061626364
XLAT
FOK
MON
MDP
MDS
LOCK
TEST
FILO
FILI
PCO
VSS
AVSS
CLTV
AVDD
BIAS
ASYI
ASYO
ASYE
WDCK
1
2
3
4
5
6
7
8
9
10
11
12
13
14
RF
15
16
17
18
19
SERVO AUTO
SEQUENCER
14
INTERFACE
DIGITAL
PLL
ASYMMETRY
CORRECTOR
5
CPU
LRCK
PCMD
5
DEMODULATOR
16K
RAM
BCLK
XUGF
GTOP
SUB CODE
PROCESSOR
EFM
3
ERROR
CORRECTOR
3
VDD
XPCK
4
D/A
INTERFACE
GFS
RFCK
CZPO
DIGITAL
CLV
6
XROF
32313029282726252423222120
MNT3
DIGITAL
MNT1
OUT
CLOCK
GENERATOR
51
DATA
XRST
50
SENS
49
MUTE
48
SQCK
47
SQSO
46
45
EXCK
SBSO
44
SCOR
43
42
VSS
WFCK
41
EMPH
40
DOUT
39
C4M
38
37
FSTT
XTSL
36
XTAO
35
XTAI
34
33
MNTO
IC703 BA6898FP
GND
OUT4 –BOUT4 –AIN4
272826252423
D
DD
LEVEL SHIFT
LEVEL SHIFT
DD
2134567891011121314
IN1
OUT1 –B
OUT1 –A
IN4’
T. S. D.
REGULATOR, BIAS,
T. S. D. MONITOR
RESET
REG –B
VREFIN
REGOUT
22
VCC
VCC
MUTE
212019
VCC
DRIVER
MUTE
VCC
GND
IN3’
IN2’
IN3
OUT3 –AOUT3 –BNC
18171615
D
LEVEL SHIFT
LEVEL SHIFT
DD
IN2
OUT2 –A
OUT2 –B
OPIN –B
NC
GND
OPOUT
– 56 –
Page 31
IC704 SM5877AM
MODE
ATCK
23
24
ATTENUATION COUNTER
1
MUTE
DS
RSTN
TIMING
CONTROL
R
R
NOISE SHAPER
L
L
3
CKO
PROCESSOR BLOCK
4
DVSS
FILTER PROCESSOR &
ATTENUATION PROCESSOR
2
DEEN
XVSS
202122
INPUT INTERFACE
5
6
DI
BCKI
10
15
TO1
AVDDR
1112
AVDDL
RO
AVSS
14
13
LO
XVDD
L
BLOCK
PRODUCE
LRCI
TSTN
MUTE
16
17
XTI
XTO
19
18
R
PWN DATA
7
89
DVDD
– Main Section –
IC301 TA2068N
LINE
IN1
INT
EXT
RADIO
IN1
232221
10k
15k
LINE
NAB
AMP1
RADIO
TAPE
BUF AMP
A1
6k
10k
10k
10k
10k
REC
PLAY
PRE
OUT1
VCC
2024
1k1k
7dB
MUTE
B1
REF AMP
LOGIC
ON
ALC1
DET
MONITOR
AMP
BUF AMP
10k10k
26dB
REC
AMP1
RADIO
LINE
RADIO
IN2
TAPE
TAPE
10k
RADIO
TAPE
NAB
AMP2
151617
TAPETAPE
LINE
10k
LINE
PRE
OUT2
18191413
1k
MONITOR
ON
ALC2
2.1
AMP
7dB
BUF AMP
B2
AMP2
REC
MUTE
26dB
10k
10k
10k
10k
6k
BUF AMP
A2
MUTE
ON
IN2
10k
MIC
AMP1
1k
MIC
IC305 BA338
IN
VCC
OUT
NOISE FILTER
MUTING
GND
NFB
9 8 7 6 5 4 32 1
IN
PRE AMP
S
B+
R
F.F.
COMPARATOR
Q
COMPARATOR
COMPARATOR
SENSE TIMING
PULSE WIDTH
ALC
NAB
OUT1
NAB
NF1
456321
REC
OUT1
NAB
IN1
VREF
GND
987101112
NAB
IN2
REC
OUT2
NAB
NF2
NAB
OUT2
– 57 –
MIC
NF
Page 32
NOTE:
• The mechanical parts with no reference
number in the e xploded vie ws are not supplied.
• Items mar ked “*” are not stoc ked since
they are seldom required f or routine ser vice.
Some delay should be anticipated
when ordering these items.
• Abbreviation
IT: Italian model
EE: East European model
7-1. CASE SECTION
SECTION 7
EXPLODED VIEWS
• -XX and -X mean standardized parts, so
they ma y ha ve some diff erence from the
original one.
• Color Indication of Appear ance P ar ts
Example :
KNOB, BALANCE (WHITE) ... (RED)
cabinet (CD) section
N
Par ts Color Cabinet’ s Color
N
• Accessories and packing materials and
hardw are (# mar k) list are giv en in
the last of this parts list.
The components identified by
mark ! or dotted line with mark.
! are cr itical for saf ety.
Replace only with part number
specified.
• Due to standardization, replacements in
the par ts list ma y be different from the
par ts specified in the diag rams or the
components used on the set.
• -XX and -X mean standardized parts, so
they ma y ha ve some diff erence from the
original one.
• RESIST ORS
All resistors are in ohms.
MET AL:Metal-film resistor.
MET AL O XIDE: Metal o xide-film resistor .
F:nonflammable
IC8018-752-882-79 IC CXP83120A-022Q (EXCEPT EE)
IC8018-752-899-66 IC CXP83120A-031Q (EE)
IC8028-759-449-53 IC S-81256PG-Z
IC8038-759-511-42 IC S-80730AN