Sony PMC-D307L User manual

– 1 –
SERVICE MANUAL
AEP Model
UK Model
Singapore Model
PMC-D307L
PERSONAL COMPONENT SYSTEM
MICROFILM
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
FM Except Italian,
East European 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: External aerial terminal
MW/LW: External aerial terminal
– Continued on next page –
Cassette-corder section
Recording system
4-track 2-channel stereo
Fast winding time
Approx. 130 s (sec.) with Sony cassette C-60
Frequency response
TYPE I (normal): 40 - 15,000 Hz
General
Speaker
Full range: 8 cm (3 1/4 in.) dia., 6.0 ohms,
cone type ×2
InputLINE IN jack (stereo minijack)
Minimum input level 250 mV
Outputs
Headphones jack (stereo minijack)
For 16 - 68 ohms impedance headphones
LINE OUT jack (stereo minijack)
Rated output level 440 mV at load impedance
47 kilohms
Optical digital output (optical output connector)
Wave length: 630 - 690 nm
Maximum power output
10 W + 10 W
Power requirements
For personal component system:
230 V AC, 50 Hz
For remote commander:
3 V DC, 2 R6 (size AA) batteries
CD Model Name Using Similar Mechanism PMC-D305L
Section CD Mechanism Type KSM-213CDM
Optical Pick-up Name KSS-213C
Tape Model Name Using Similar Mechanism NEW
Section Tape Transport Mechanism Type MF-D307
SPECIFICATIONS
Ver 1.0 1998. 07

– 2 –
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 PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
Power consumption
AC 35 W
Dimensions (incl. projecting parts)
Player: approx. 130 ×211 ×200 mm (w/h/d)
(5 1/8 ×8 3/8 ×7 7/8 inches)
Left speaker: approx. 130 ×210 ×235 mm
(w/h/d) (5 1/8 ×8 3/8 ×9 3/8 inches)
Right speaker: approx. 130 ×211 ×200 mm
(w/h/d) (5 1/8 ×8 3/8 ×7 7/8 inches)
MassPlayer: approx. 1.7 kg (3 lb. 12 oz.)
Left speaker: approx. 3.2 kg (7 lb. 1 oz.)
Right speaker: approx. 1.6 kg (3 lb. 9 oz.)
Supplied accessories
Remote commander (RMT-C305AD) (1)
FM lead aerial (1)
MW/LW loop aerial (1)
Audio connecting cord (1)
Design and specifications are subject to change without
notice.
TABLE OF CONTENTS
1. SERVICING NOTES......................................................... 3
2. GENERAL
2-1. Location of Controls ........................................................... 4
3. DISASSEMBLY
3-1. Cabinet (Rear) ..................................................................... 5
3-2. Case (Lower) Section ..........................................................6
3-3. Tape Mechanism Deck Section ...........................................6
3-4. Cabinet (CD) Section .......................................................... 7
3-5. CD, Control Board .............................................................. 7
3-6. Optical Pick-up Section ...................................................... 8
3-7. Rear Chassis (Speaker) Section .......................................... 8
3-8. Amplifier, Terminal, Jack Board ......................................... 9
3-9. Power Board ........................................................................ 9
4. MECHANICAL ADJUSTMENTS............................... 10
5. ELECTRICAL ADJUSTMENTS
Tape Section .......................................................................... 10
Tuner Section......................................................................... 12
CD Section ............................................................................ 14
6. DIAGRAMS
6-1. Block Diagram –Tuner Section– ....................................... 18
6-2. Block Diagram –CD Section–........................................... 20
6-3. Block Diagram –Tape Section– ........................................ 21
6-4. IC Pin Description............................................................. 23
6-5. Circuit Boards Location .................................................... 25
6-6. Printed Wiring Board –Tuner Section– ............................. 27
6-7. Schematic Diagram –Tuner Section–................................ 29
6-8. Printed Wiring Boards –CD Section– ............................... 32
6-9. Schematic Diagram –CD Section–.................................... 35
6-10. Printed Wiring Boards –Main Section– ............................ 38
6-11. Schematic Diagram –Main Section–................................. 41
6-12. Printed Wiring Boards –Control Section–......................... 44
6-13. Schematic Diagram –Control Section– ............................. 47
6-14. Printed Wiring Boards –Power Amplifier Section– .......... 50
6-15. Schematic Diagram –PowerAmplifier Section– .............. 53
7. EXPLODEDVIEWS
7-1. Case Section ...................................................................... 58
7-2. Cabinet (Front) Section ..................................................... 59
7-3. Cabinet (CD) Section ........................................................ 60
7-4. Optical Pick-up Section .................................................... 61
7-5. Tape Mechanism Deck Section-1...................................... 62
7-6. Tape Mechanism Deck Section-2...................................... 63
7-7. Speaker (L) Section........................................................... 64
7-8. Speaker (R) Section........................................................... 65
8. ELECTRICAL PARTS LIST......................................... 66

– 3 –
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
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
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, ob-
serve 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.
SECTION 1
SERVICING NOTES
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 Power Control circuit or
Optical Pick-up is broken.
Objective lens moves up and down three times for focus search.
HOW TO CHANGE THE FM CERAMIC FILTERS
This model is used three ceramic filters of CF1, 2 and CF3.
Therefore, theceramic filtersmust changethree piecestogether since
it’s supply three pieces in one package as a spare parts.
S801

– 4 –
SECTION 2
GENERAL
2-1. LOCATION OF CONTROLS
1. 6OPEN/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
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. 6PUSH (cassette holder open) button
21. Cassette holder
22. OPEN $knob
23. LINE OUT jack
24. LINE IN jack
1
234
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
2324
– upper side view –
– front side view –

– 5 –
• The equipment can be removed using the following procedure.
SECTION 3
DISASSEMBLY
5 cabinet (rear)
4 BVTP 3x10
3 BVTP 3x10
2 KTP 3x10
1 KTP 3x10
3-1. CABINET (REAR)
Set Cabinet (rear) Case (lower) section Cabinet (CD) section CD, Control board
Optical pick-up section
Tape mechanism deck section
Rear chassis (speaker) section Amplifier, terminal, jack board Power board
Note : Follow the disassembly procedure in the numerical order given.

– 6 –
3-2. CASE (LOWER) SECTION
3-3.TAPE MECHANISM DECK SECTION
2 CN301, CNP302, 304, 306, 307
3 earth lead
4 BVTP 3x10
5 case (lower) section
1 parallel wire (27 core)
(CN303)
2 BVTP 3x10
3 BVTP 3x10
4 tape mechanism
deck section
1 P 2.6x8

– 7 –
3-4. CABINET (CD) SECTION
3-5. CD, CONTROL BOARD
2 claws
3 CNP802, 803
4 cabinet (CD) section
1 CNP705
1 CNP707
6 S801
7 P 2.6x8
9 CONTROL boar
d
3 parallel wire (9 core)
(CNP706)
4 BVTP 3x10
5 CD board
8 BVTP 3x10
2 FFC cable 16P
(optical pick-up)

– 8 –
3-6. OPTICAL PICK-UP SECTION
3-7. REAR CHASSIS (SPEAKER) SECTION
1 screw (2.6x16)
2 optical pick-up section
3 CNP504
4 rear chassis (speaker) assy
1 B 3.5x16, tapping
2 B 3.5x16, tapping

– 9 –
3-8. AMPLIFIER,TERMINAL, JACK BOARD
3-9. POWER BOARD
5 BVTP 3x10
3 BVTP 3x1
0
4 BVTP 3x10
1 CNP503
2 CNP505
8 JACK board
7 TERMINAL board
6 AMPLIFIER board
1 CNP501
4 P 4x
6
3 P 4x6
2 P 3x6
5 POWER board

– 10 –
Mode Tension Meter Meter Reading
FWD CQ-403A more than 90 g
REV CQ-403R (more than 3.17 oz)
Mode Torque Meter Meter Reading
FWD CQ-102C
30 – 70 g•cm
(0.42 – 1.02 oz•inch)
FWD 2.0 – 6.0 g•cm
Back tension (0.028 – 0.076 oz•inch)
REV CQ-102RC
30 – 70 g•cm
(0.42 – 1.02 oz•inch)
REV 2.0 – 6.0 g•cm
Back tension (0.028 – 0.076 oz•inch)
80 – 170 g•cm
FF, REW CQ-201B (1.12 – 2.38 oz•inch)
32 Ω
test tape
WS-48B
(3 kHz, 0dB)
set
2
(
headphones
)
j
ack
digital frequency
counter
Tape Speed Adjustment
Procedure:
Mode: playback
Frequency difference between the beginning and the end of the tape
should be within 1% (30 Hz).
Adjustment Location:
Adjustment Values:
SECTION 5
ELECTRICAL ADJUSTMENTS
SECTION 4
MECHANICAL ADJUSTMENTS
PRECAUTION
1. Clean the following parts with a denatured-alcohol-moistened
swab:record/playback/erase head pinch roller
rubber belts capstan
idlers
2. Demagnetize the record/playback/erase head with a head de-
magnetizer. (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 sup-
ply voltage unless otherwise noted.
Torque Measurement
Tape Tension Measurement
Standard Output Level
TestTape
TAPE SECTION 0 dB = 0.775V
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 ad-
justment.)
2. The adjustments should be performed for both L-ch and R-ch
unless otherwise indicated.
SP OUT PHONES
Load impedance 6 Ω32 Ω
Output level 0.775 V (0 dB) 0.25 V (–10 dB)
Type Signal Used for
WS-48B 3 kHz, 0 dB Tape speed adjustment
P-4-A063 6.3 kHz, –10 dB Head azimuth adjustment
Digital frequency counter
2,970 to 3,030 Hz
adjustable
resistor M691

– 11 –
3. Phase Check
Mode: playback
+
–
VH
+
–
Screen pattern
set
L-CH 32
Ω
test tape
P-4-A063
(6.3 kHz, –10 dB)
2 (headphones) jack
R-CH 32
Ω
oscilloscope
Good Wrong
in phase 45
° 90 ° 135 ° 180 °
4. After the adjustment, lock the screws with locking compound.
forward
screwdriver
reverse
screw
position
L-CH
peak
within
1dB
output
level
L-CH
peak R-CH
peak
within
1dB
screw
angle
R-CH
peak
Record/Playback Head Azimuth Adjustment
Procedure:
1. Mode: playback
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.
+
–
set
32
Ω
level meter
test tape
P-4-A063
(6.3 kHz, –10 dB)
2 (headphones) jac
k
Adjustment Location:

– 12 –
FM FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display 87.5 MHz 108 MHz
(65 MHz)
Reading on Digital voltmeter 1.3 V or more 9.0 V or less
(1.0 V or more) (10.0 V or less)
Adjustment Part <confirmation> <confirmation>
FMTRACKING 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 Display 531 kHz 1,611 kHz
Reading on Digital voltmeter 0.85 ±0.5 V 6.8 ±1.5 V
Adjustment Part <confirmation> <confirmation>
MWTRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3 CT4
621 kHz 1,404 kHz
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
CFT1
450 kHz
LW FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display 153 kHz 279 kHz
Reading on Digital voltmeter 0.6 ±0.4 V 7.5 ±0.5 V
Adjustment Part <confirmation> L4
LW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L5 CT5
162 kHz 261 kHz
( ) : East European model
Adjustment Location: TUNER board (See page 13.)
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
22.5 kHz frequency
deviation by 400 Hz signal
output level : as low as possible
• MW/LW Section
Setting:
FUNCTION button: MW or LW
30% amplitude
modulation by 400 Hz signal
output level : as low as possible
• Connecting Level Meter (FM, MW and LW)
EXT ANT FM
jack (CNP2)
FM RF signal
generator
0.01
µ F
set
digital
voltmeter
TP (VT)
2 (headphones) jack
set
32
Ω
level meter
(range: 0.5-5 V ac
)
Put the lead-wire
antenna close to
the set.
AM RF signal
generator
• Connecting Digital Voltmeter (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.
–tuner board (conductor side)–

– 13 –
AdjustmentLocation:
–tuner board (component side)–
TU1
IC1
CFT1
AM IF
ADJUSTMENT
CT5
L5
LW
TRACKING
ADJUSTMEN
T
CT4 L3
MW
TRACKING
ADJUSTMENT
L4
LW
FREQUENCY
COVERAGE
ADJUSTMENT

– 14 –
E-F Balance Adjustment
This adjustment is to be done when the optical pick-up is replaced.
Procedure:
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 RV703 so thatthe oscilloscopetraversewaveformis sym-
metrical, as shown in the figure below.
A
B
0 V A
B
0 V
A=B
Note: Take long sweep time
for easy monitoring.
VOLT/DIV: 0.2 V (with the 10:1 probe in use.)
TIME/DIV: 1 ms
A=B
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.)
+
–
CD board
TP (TRACKING-Y)
TP (VC)
oscilloscope
(DC range)
TEST 1
Terminal
How to Release theTest 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 con-
tinuously.)
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 pbutton.
Confirm that focus search operation stops. If it does not , press
the pbutton again longer.
Note: When the malfunction is occurred by mis-passing other keys, turn
off the power and check again from making the test mode.
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 intoTest 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)
CD SECTION

– 15 –
Focus Bias Adjustment
This adjustment is to be done when the optical pick-up is replaced.
Procedure:
1. Connect theoscilloscopeTP (RF) andTP (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 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)
VOLT/DIV : 0.2 V (With the 10:1 probe in use)
TIME/DIV : 500 ns
1.3
± 0.2 Vp-p
+
–
CD board
TP (RF)
TP (VC)
oscilloscope
(AC range)
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.)
Gain Focus Tracking
Symptoms
• The time until music starts becomes
longer for p→(on automatic
selection. low low or high
(=, +buttons pressed.)
(Normally takes about 2 seconds.)
• Music does not start and disc
—low
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 high high
operation.
Focus/Tracking Gain Adjustment
A frequency response analyzer is necessary in order to perform this
adjustment exactly.
However, this gain has a margin, so even 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 tomechanical noise and mechanicalshock 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.
REFERENCE

– 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 posi-
tions after the primary adjustment are only a little different, return
the controls to the original position.
+
–
TP (FOCUS-Y)
TP (TRACKING-Y)
TP (VC)
oscillosope
(DC range)
CD board
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)
100 mV
0 V
low focus gain
0 V
250 mV
high focus gain VOLT/DIV: 100 mV
TIME/DIV:2ms
VOLT/DIV: 100 mV
TIME/DIV:2ms
VOLT/DIV: 100 mV
TIME/DIV:2ms
100 mV
75 mV
0 V
• Inconnect Examples (DC level changes more than on adjusted
waveform)
high tracking gain
high fundamental wave
than for low gain
VOLT/DIV: 1 V
TIME/DIV:2 ms
0 V
low tracking gain VOLT/DIV: 1 V
TIME/DIV: 2ms
0 V
0 V
VOLT/DIV: 1 V
TIME/DIV: 2ms
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)
• Incorrect Examples (fundamental wave appears)
Note:
VOLT/DIV: with the 10:1 probe in used.
10. Release test mode after adjustment is completed.
Adjustment Location: CD board (See page 17.)

– 17 –
Connection and Adjustment Location:
–CD board (conductor side)–
TP
(RF) TP (FOCUS-Y
)
TP
(TRACKING-Y) TP (VC)
RF
VC FOCUS
Y
YX
X
TRACKING
IC701
–CD board (component side)–
CNP706
CNP701
RV701
FOCUS BIAS
ADJUSTMENT RV702
FOCUS GAIN
ADJUSTMENT
RV704
TRACKING GAIN
ADJUSTMENT
RV703
E-F BALANCE
ADJUSTMENT

6-1. BLOCK DIAGRAM —TUNER SECTION —
PMC-D307L
– 18 – – 19 –
SECTION 6
DIAGRAMS
1 5 8 6
6
7
3
19
14 7
24
181514
17 16 11
7
ANT VT OSC OUT VCC IF OUT
TU1
TUNER UNIT
CF1 CF2
IF AMP
Q4
LW SW
Q22
VT
CONTROL
Q13
MW SW
Q21
FM B+SW
Q24 RADIO7.5V
CNP2
EXT ANT
FM
FM
DET T1
FM/AM
BUFFER
FM
MPX
STEREO
SW
Q17
AM
HI-CUT
Q9
IF SW
Q11
BAND
SW
Q10
MONO-ST
SW
Q12
AM
DET
IF
BUFFER
CFT1
AM
MIX
AMP
Q6
AM
OSC
12
13 10
24
AM IF IN
MO-ST BAND IF OUT
DET
OUT
22
AM
RF IN
FM
IF IN
AM
OSC
OSC
OUT
MIX
OUT
MPX
IN
L OUT
R OUT R-CH
L-CH
ST-IND VCO
CF4
R ST
95 B MUTE
R COUNT
R DAT
R CLK
R CE
CFT1
AM IF
IF IN CD
6
DA
5
CK
4
25
26
27
28
CE
XOUT
XIN
13 P6
9MO/ST
16 AM IN
8FM
17 FM IN
10 LW
21 PD1
11
1
2
MW
X1
75kHz
PLL
IC2
SYSTEM CONTROL
IC801 (1/3)
TAPE SECTION
A
L4
AM OSC
LW
SW
Q5
LW
SW
Q7
CT5 CT4
D5
CNP1
MW/LW LOOP
ANTENNA
L5
LW RF
L3
MW RF
MW SW
Q3
MW SW
Q2
LW SW
Q1
L4CT4, L3
LW
FREQUENCY
COVERAGE
MW TRACKING
CT5, L5
LW TRACKING
FM/AM RF AMP, OSC, IF AMP, DET
IC1
04
IF MUTE
Q8
MW/LW
Signal Path
R-ch : same as L-CH.
: FM
: MW/LW

6-2. BLOCK DIAGRAM — CD SECTION —
PMC-D307L
35 31
25
24
21
20
19
23 55
59
57
56
54
1
14 21 6 12
142
5
8
18
1
22
40
22
20
34
35
48
39
53
52
51
47
46
43
49 10
94
3
2
12
31
32
33
34
88
3
38
3
1
11
6
5
7
4
92
93
37
60
50
64
3
37
42
44
22
16
6
13
25
36
39
38
40
1
2
34
33
27
M
E-F
BALANCE
RV703
FOCUS
GAIN
LD POWER
CONTROL
Q701, 703
RV702
I-V
AMP
PD1 RF PCMD
EMPH
BCK
LRCK
XTAI
XTAO
MUTE
DOUT
SENS
SCOR
SQSO
SQCK
DATA
XLAT
CLOK
FOK
SEIN
DATO
XLTO
CLKO
CNIN
SPOA
XRST
LDON
MDP
RFO
FOK
SENS
DATA
XLT
CLK
C.OUT
F.BIAS
TO
TI
XRST
SLO
FEO
TFO
PD2
E
F
EI
FO
FI
PD
LD
RV701
FOCUS
BIAS
RV704
TRACKING
GAIN
S701
(LIMIT)
CD RF & SYSTEM SERVO PROCESSOR
IC701
OPTICAL PICK-UP
KSS-213C
CD DIGITAL SIGNAL PROCESSOR
IC702
D/A CONVERTER
IC704
39
40
8
DATA LO
RO
EMPH
BCK
LRCK
XI
MUTE
RSTN
FOCUS/TRACKING COIL DRIVE,
SLED/SPINDLE MOTOR DRIVE
IC703
LEVEL
SHIFT
26
19
18 LEVEL
SHIFT
17
3
7
2LEVEL
SHIFT
1
10
12 LEVEL
SHIFT
11
14
15
M
T+
T-
F+
F-
SL+
SL-
SP+
SP-
M702
(SLED)
M701
(SPINDLE)
TRACKING
FOCUS
PD
LD
TIN
FIN
SLIN
SPIN
SPI
MUTE
FREQUENCY
CONVERTER
Q802, 803
X802
4.19MHz
X801
32.768kHz
OPTICAL
DIGITAL OUT
(CD)
J331
50
|
77
C-MUTE COMO-3
SEG1-23
KEY0
KEY1
KEY2
KEY3
BL CONT
RMC
RST
AC CHK
C-SENS
C-SCOR
C-SQSO
C-SQCK
C-DATA
C-XLAT
C-CLK
C-XRST
TX
TEX
SFC
EXTAL1
XTAL1
C-DOOR
LCD801
LIQUID CRYSTAL
DISPLAY PANEL
S901-923
KEY MATRIX
LCD BACK
LIGHT DRIVE
Q805
BL7.5V
REMOTE
CONTROL
RECEIVER
IC901
21 RESET
IC803 3 2
+5V
REG
IC802
D805
D804
Q804
1AC CHK
Q801
COM12V
COM12V
PUSH
OPEN/CLOSE
S801
PL801
PL802
(LCD BACK LIGHT)
SYSTEM CONTROL, LCD DRIVE
IC801 (3/3)
L-CH TAPE SECTION
R-CH
B
D802
D803
X701
16.9344MHz
04
Signal Path
R-ch : same as L-CH.
: CD
: digital out
– 20 –

6-3. BLOCK DIAGRAM —TAPE SECTION —
– 21 – – 22 –
22
24 20 31 24
2
7 1
6
83
12 13 14 15 18 19 20 21 23
5
4
8
9
MUTE
MUTE
3 1
3
12
14
2
15
17
18
15
21
R-CH R-CH
L. LO
R. LO
TAPE
REC
L. RAD
L. IN
L. RD
R. IN
R. RD
L. CD
R-CH
R-CH
LOGIC
REC/PB PRE AMP
IC301
MUTE
CONTROL
Q333
CD/LINE
CONTROL
Q331, 332
CD5V
RADIO7.5V
D317
D319
R-CH
J323
LINE IN
L-CH
L-CH
CD SECTION
B
TUNER SECTION
A
HRPE101
L-CH
R-CH
ERASE
BIAS
OSC
Q301
REC/PB
SW
Q326, 328
BL7.5V
BL7.5V
Q308
Q325
Q307
MUTE
CONTROL
Q327, 335
H/P AMP
SW
Q334
MEGA BASS
Q329
REF
REC/PB
SW
Q302, 303
REC/PB
SW
Q304, 305
BL7.5V
REC/PB
SW
Q324
REC/PB
SW
Q306
BL7.5V
CD5V +5V REG
Q319
CD +7.5V
REG
Q318
AUDIO
+7.5V REG
Q315
POWER
CONTROL
Q313
+12V REG
Q323
TU7.5V
SW
Q316
CD
+5V SW
Q320
CD7.5VCOM5V F501 T501
RECT
D501-504
(AC IN)
BL7.5V
RADIO7.5V
D307
VT
COM12V
DRIVER CONTROL
VOLTONE
ELECTRONIC VOLUME
IC302
D312
Q330
COMP
AMS AMP DET
IC305
D320
Q314
15
20
98
97
13
23
22
21
96
1816
COM12V
SOLENOID
DRIVE
Q309
T AMST SOL
99
BUFFER
Q310
TC CONTROL
Q317
TC M.SW
Q311, 312
T END
17 T MODE
30 T STAT
19 T MCON
A MUTE
V CLK
V DAT
V CE
T BIAS
ISS1
ISS2
T REC
P CONT
PH691
S696
MODE
(HEAD POSITION)
S691
HALF
(CASSETTE)
S694
REC-REV
(ERASE PROOF)
S695
REC-FWD
(ERASE PROOF)
PM691
PLUNGER
SOLENOID
M
M691
(CAPSTAN/REEL)
SYSTEM CONTROL
IC801 (2/3)
H/P AMP
IC303
D305
R-CH -2
R
-2
R
-1
L
-1
L
J302
SIGNAL OUTPUT
J502
SIGNAL INPUT
POWER AMP
IC309
SP101
SPEAKER
L-CH
SP201
SPEAKER
R-CH
J301
Q103
Q101
Q104
R-CH J332
LINE OUT
LINE AMP
IC304
04
Q102
Q131
Q132
T301
VCC
Signal Path
: FM
: TAPE (PB)
: TAPE (REC)
: LINE IN
: CD
R-ch : same as L-CH.
R-CH
PMC-D307L