Sony PMC-DR45 - Personal Component System User manual

– 1 –
CD
Model Name Using Similar Mechanism CFD-S47
Section CD Loading Mechanism Type FLM-DR45-149
CD Mechanism Type KSM-213CCP
Optical Pick-up Name KSS-213C
Tape Model Name Using Similar Mechanism NEW
Section Tape Transport Mechanism Type MF-DR45
SERVICE MANUAL
US Model
Canadian Model
PMC-DR45
PERSONAL COMPONENT SYSTEM
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 +0/–1 dB
Wow and flutter
Below measurable limit
Radio section
Frequency range
FM: 87.6 - 108 MHz
AM:530 - 1,710 kHz
Antennas
FM: Lead antenna
AM:Loop antenna – 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): 50 - 14,000 Hz
General
Speaker
Full range: 8 cm (3 1/4 in.) dia., 4 ohms,
cone type ×2
InputLINE IN jack (stereo minijack)
Minimum input level 440 mV
Outputs
Headphones jack (stereo minijack)
For 16 - 64 ohms impedance headphones
LINE OUT jack (stereo minijack)
Rated output level 330 mVat load impedance
47 kilohms
OPTICAL DIGITAL OUT (CD) (optical output connector)
Wave length: 760 - 880 nm
Power output (excluding US model)
15 W + 15 W (at 4 ohms, 10% harmonic distortion
inAC operation)
SPECIFICATIONS
AUDIO POWER SPECIFICATIONS
POWER OUTPUTAND TOTAL
HARMONIC DISTORTION
With 4-ohm loads, both channels driven from
150 - 10,000 Hz; rated 13 W per channel-
minimum RMS power, with no more than 10%
total harmonic distortion inAC operation.

– 2 –
Power requirements
For personal component system:
120 VAC, 60 Hz
For remote control:
3 V DC, 2 AA(size R6) batteries
Power consumption
AC 45 W (US model)
AC 50W(Canadian model)
Dimensions (incl. projecting parts)
Player: approx. 137 ×202 ×212 mm (w/h/d)
(5 1/2 ×8 ×8 3/8 inches)
Left speaker: approx. 137 ×202 ×212 mm
(w/h/d) (5 1/2 ×8 ×8 3/8 inches)
Right speaker: approx. 137 ×202 ×180 mm
(w/h/d) (5 1/2 ×8 ×7 1/8 inches)
MassPlayer: approx. 1.8 kg (3 lb. 15 oz.)
Left speaker: approx. 3 kg (6 lb. 10 oz.)
Right speaker: approx. 1.5 kg (3 lb. 5 oz.)
Supplied accessories
Remote control (1) (RMT-CDR45A)
FM lead antenna (1)
AM loop antenna (1)
Audio connecting cord (1)
Design and specifications are subject to change without
notice.
TABLE OF CONTENTS
1. SERVICING NOTES......................................................... 3
2. GENERAL
Playing a CD ........................................................................... 4
Listening to the radio............................................................... 4
Playing a tape .......................................................................... 5
Recording on a tape ................................................................. 5
Setting the clock ...................................................................... 6
3. DISASSEMBLY
3-1. Cabinet (Front) Assy ........................................................... 7
3-2. Cabinet (Rear) ..................................................................... 8
3-3. Front Board ......................................................................... 8
3-4. Control Board ...................................................................... 9
3-5. Line Board........................................................................... 9
3-6. Tuner Board....................................................................... 10
3-7. Holder, Cassette ................................................................ 10
3-8. Top Block Assy ................................................................. 11
3-9. CD Assy, H/P Board.......................................................... 11
3-10. Main Board ....................................................................... 12
3-11. Tape Mechanism Block ..................................................... 12
3-12. Top Board .......................................................................... 13
3-13. “Plate Assy, Chuck”, Tray................................................. 13
3-14. Loading Board................................................................... 14
3-15. CD Board .......................................................................... 14
3-16. CD Mechanism Block ....................................................... 15
3-17. Power Board ...................................................................... 15
4. MECHANICAL ADJUSTMENTS............................... 16
5. ELECTRICAL ADJUSTMENTS
5-1. Tape Section ...................................................................... 16
5-2. Tuner Section .................................................................... 18
5-3. CD Section ........................................................................ 20
6. DIAGRAMS
6-1. IC Pin Descriptions ........................................................... 21
6-2. Circuit Boards Location .................................................... 23
6-3. Block Diagram –Tuner Section– ....................................... 25
6-4. Block Diagram –CD Section–........................................... 27
6-5. Block Diagram –Tape Section– ........................................29
6-6. Block Diagram –System Control, Power Section– ........... 31
6-7. Printed Wiring Board –Tuner Section– ............................. 33
6-8. Schematic Diagram –Tuner Section– ................................35
6-9. Printed Wiring Boards –CD Section– ............................... 37
6-10. Schematic Diagram –CD Section–....................................39
6-11. Printed Wiring Board –TC Section– .................................41
6-12. Schematic Diagram –TC Section– ....................................43
6-13. Printed Wiring Board –Main Section– .............................. 45
6-14. Schematic Diagram –Main Section–................................. 47
6-15. Printed Wiring Board –Control Section– ..........................49
6-16. Schematic Diagram –Control Section– ............................. 53
6-17. Printed Wiring Board –Front Section– .............................. 55
6-18. Schematic Diagram –Front Section– ................................56
6-19. Printed Wiring Board –Top Section– ................................57
6-20. Schematic Diagram –Top Section– ................................... 58
6-21. Printed Wiring Board –Line Section– ............................... 59
6-22. Schematic Diagram –Line Section– ..................................59
6-23. Printed Wiring Boards –Power Section–...........................61
6-24. Schematic Diagram –Power Section– ...............................63
6-25. IC Block Diagrams............................................................ 65
7. EXPLODEDVIEWS
7-1. Cabinet Section ................................................................. 69
7-2. Cabinet (Top) Section ....................................................... 70
7-3. CD Chassis Section ........................................................... 71
7-4. Mechanism Deck Section (1) ............................................72
7-5. Mechanism Deck Section (2) ............................................73
7-6. Optical Pick-up Section .................................................... 74
7-7. Speaker (L) Section...........................................................75
7-8. Speaker (R) Section........................................................... 76
8. ELECTRICAL PARTS LIST......................................... 77

–3 –
This Compact Disc player is
classified as a CLASS 1
LASER product.
The CLASS 1 LASER
PRODUCT lable is located
on the bottom exterior.
SECTION 1
SERVICING NOTES
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.
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.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0SUR LES
DIAGRAMMESSCHÉMATIQUESETLA LISTE DESPIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
To Exposed Metal
Parts on Set
0.15µF 1.5k
Ω
AC
voltmeter
(0.75V)
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following
safety check before releasing the set to the customer:
Checktheantenna terminals,metaltrim, “metallized”knobs,screws,
and all other exposed metal parts forAC leakage. Check leakage as
described below.
LEAKAGETEST
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’instructions to use these
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a VOM
or battery-operatedAC voltmeter. The “limit”indication is 0.75
V, so analog meters must have an accurate low-voltage scale. The
Simpson 250 and Sanwa SH-63Trd are examples of a passive
VOM that is suitable. Nearly all battery operated digital
multimeters that have a 2V AC range are suitable. (See Fig.A)

–4 –
SECTION 2
GENERAL This section is extracted
from instruction manual.
Basic Operations4
Playing a CD
Basic Operations
For hookup instructions, see pages 32 - 36.
1Press ZCD OPEN/CLOSE
(direct power-on) and place the
CD on the CD tray.
2Press u.
(On the remote, press Non the
CD section.)
The CD tray closes and the player
plays all the tracks once.
With the label sideup
Display
PlayingtimeTracknumber
21
Basic Operations
Basic Operations
5
Use these buttons for additional operations
Tip
Next time you want to
listen to a CD, just press
u. The player turns on
automatically and starts
playing the CD.
To Press
adjust the volume VOLUME +, –
(VOL +, –on the remote)
stop playback x
pause playback u
(Xon the remote)
Press again to resume play
after pause.
go to the next track >
go back to the previous track .
remove the CD ZCD OPEN/CLOSE
turn on/off the player POWER
u., >
ZCD
OPEN/CLOSE
VOLUME +, –
POWER
x
Basic Operations6
Listening to the radio
For hookup instructions, see pages 32 - 36.
1Press BAND•AUTO PRESET
until the band you want appears
in the display (direct power-on).
2Hold down TUNE TIME SET + or
–(TUNE + or –on the remote)
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 cannot tune in a station,
press the button repeatedly to
change the frequency step by
step.
Display
2
1
Indicates an FM
stereo broadcast.
Basic Operations
Basic Operations
7
Usethese buttons for additional operations
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 MODE until
“MONO”appears in the
display and the radio
will play in monaural.
•Next time you want to
listen to the radio, just
press the BAND•AUTO
PRESET button. The
player turns on
automatically and starts
playing the previous
station.
To Press
adjust the volume VOLUME +, –
(VOL +, –on the remote)
turn on/off the radio POWER
To improve broadcast reception
FM:
Keep the FM lead antenna as horizontal as possible
and reorient it.
If the FM broadcast is still noisy, disconnect the FM
lead antenna and connect the FM outdoor antenna
(not supplied) (page 36).
AM:
Keep the AM loop antenna as far as possible from the
player and reorient it.
VOLUME +, –
MODE
POWER

–5 –
Basic Operations8
Playing a tape
For hookup instructions, see pages 32 - 36.
1Press ZPUSH OPEN/CLOSE to
open the tape compartment and
insert a recorded tape. Use TYPE I
(normal), TYPE II (high position)
and TYPE IV (metal) tapes.
2Press ZPUSH OPEN/CLOSE to
close the compartment.
3Press N.
(On the remote, press TAPE N.)
The player turns on (direct
power-on) and starts playing.
Display
1, 2
3
With the side you want
to play facing up
Tape counter
Basic Operations
Basic Operations
9
Use these buttons for additional operations
To Press
adjust the volume VOLUME +, –
(VOL +, –on the remote)
stop playback x
play the reverse side n
fast-forward or rewind the tape TAPE Mor m
eject the cassette ZPUSH OPEN/CLOSE
turn on/off the player POWER
To select the direction mode of the tape
Press DIR MODE repeatedly.
To play Display shows
one side of the tape
both sides of the tape
from the upper side to reverse
side only
both sides of the tape repeatedly
Tips
•Press COUNTER RESET
to reset the counter to
“000”.
•Next time you want to
listen to a tape, just
press Nor n. The
player turns on
automatically and starts
playing the tape.
DIR MODE
n
x
VOLUME +, –
TAPEm, M
COUNTER RESET
POWER Z PUSH OPEN/CLOSE
Basic Operations10
Recording on a tape
For hookup instructions, see pages 32 - 36. To record on a
MiniDisc or DAT recorder, connect the component (see
page 38).
1Press ZPUSH OPEN/CLOSE to
open the tape compartment, and
insert a blank tape. Use TYPE I
(normal) tape only.
Press ZPUSH OPEN/CLOSE
again to close the compartment.
2Select the program source you
want to record.
To record from the CD player:
Insert a CD (see page 4) and press
xon the CD section.
To record from the radio:
Tune in the station you want (see
page 6).
31
With the side you want
to record on facing up
Display
3 3
Basic Operations
Basic Operations
11
continued
3Start recording.
To record the whole CD
Press CD DUBBING.
When is displayed:
If the tape is reversed with the
recording of the track unfinished,
the player will record the track
again from its beginning on the
reverse side.
When is displayed:
If the tape reaches to its end, the
player stops.
To record the radio
(You can also record the CD
according to the following
procedure. Play the CD after the
tape starts recording.)
Press z/X and then N.
To record on the reverse side,
press n.
(On the remote, while keeping
z/X pressed, press TAPE Nor
n.)
m

–6 –
Basic Operations12
Recording on a tape (continued)
Tips
•Adjusting the volume or
the audio emphasis
(page 22) will not affect
the recording level.
•When or is
displayed, recording
will be made on both
sides of the tape. To
record on one side, press
DIR MODE to display
.
•If the AM radio makes a
whistling sound after
you’ve pressed z/X in
step 3, press MODE to
select the position that
most decreases the
noise.
Note
When you start
recording using CD
DUBBING, you cannot
set the player in pause.
Use these buttons for additional operations
To Press
stop recording xon the tape section
pause recording z/X
Press the button again to
resume recording.
turn on/off the player POWER
To erase a recording, proceed as follows:
1 Insert a tape you want to erase its recording into the tape
deck and press xon the tape section.
2 On the player: press z/X and then N.
On the remote: While keeping z/X pressed, press
TAPE N.
x
DIR MODE
MODE
POWER
n, N
z/X
The Timer 23
Setting the clock
“– –:––” indication appears in the
display until you set the clock.
The Timer
Tip
The time display
system of this player is
the 12-hour system.
Before you begin, hook up the system (see pages 32 -
36).
1Press and hold CLOCK until the hour digit flashes.
2Set the clock.
1Press TUNE TIME SET
+ or –to set the hour
and press ENTER
MEMORY.
2Press TUNE TIME SET
+ or –to set the
minutes.
3If you are on daylight saving time, press SUMMER
TIME.
4Press ENTER MEMORY.
The clock starts from 00 seconds.
m
TUNE TIME SET –, +
ENTER
MEMORY
SUMMER
TIME
CLOCK
Audio Emphasis/The Timer
continued
The Timer24
To change the display to the daylight saving time
(summer time) indication
Press and hold SUMMER TIME for 2 seconds.
“SUMMER ON”appears in the display for a few
seconds.
To cancel the summer time indication
Press and hold SUMMER TIME again.
“SUMMER OFF”appears in the display for a few
seconds.
Setting the clock (continued)

–7 –
SECTION 3
DISASSEMBLY
•The equipment can be removed using the following procedure.
Note : Follow the disassembly procedure in the numerical order given.
3-1. CABINET (FRONT) ASSY
Set Cabinet (Front) Assy
Speaker Set Power Board
CD Assy, H/P Board
Control Board Top Block Assy
Main Board
Loading Board CD Board CD Mechanism Block
Tape Mechanism Block
(TC Board)
“Plate Assy, Chuck”, Tray
Top Board
Cabinet (Rear)
Front Board Tuner Board
Line Board
Holder, Cassette
1BVTP 3x12
4CNP802
5cabinet (front) assy
2BVTP 3x12
3BVTP 3x1
2

–8 –
3-2. CABINET (REAR)
3-3. FRONT BOARD
2BVTP 3x1
0
3BVTP 3x10
4cabinet (rear)
1BVTP 3x10
3FRONT boar
d
1BTP 2.6x8
2BTP 2.6x8

–9 –
3-4. CONTROL BOARD
3-5. LINE BOARD
3BVTP 3x10
4BVTP 3x10
5CONTROL board
1CNP804
2CNP803
6CNP307
2BVTP 3x10
4LINE board
1CNP304
MAIN board
3CNP312

–10 –
3-6.TUNER BOARD
3-7. HOLDER, CASSETTE
2BVTP 3x10
6TUNER board
3BVTP 3x10
4CNP1
5Removal the solder.
1screw
2boss
3boss
4holder, cassette
1spring, cassette

–11 –
3-8.TOP BLOCK ASSY
3-9. CD ASSY, H/P BOARD
1CNP306
5top block assy
CD block assy
2CNP313
H/P board
3claws
4claw
1BVTP 3x10
2BVTP 3x10
3CD assy
4CNP702
5CNP70
3
6plate, CD
7BVTP 3x10
8H/P board

–12 –
3-10. MAIN BOARD
1BVTP 3x10
2BVTP 3x10
3MAIN board
4CNP302
5CNP31
4
7BVTP 3x10 5BVTP 3x10
6TC board
8holder MD
1BVTP 3x10
3tape mechanism bloc
k
2BVTP 3x10
4CN301
3-11.TAPE MECHANISM BLOCK (TC BOARD)

–13 –
4BTP 2.8x8
5BTP 2.8x8
3panel assy, top
6TOP board
1BVTP 3x10
2BVTP 3x10
3-12.TOP BOARD
1P 2.6x
8
2plate assy, chuck
4claw
5claw
7tray
6
3
3-13.“PLATE ASSY, CHUCK”,TRAY

–14 –
5B 2x3
6claw
7claw
8LOADING board
1belt
2claw
3pulley
4CN651
2P 2x5
3CNP701
4CD board
1Removal the
four solders.
3-14. LOADING BOARD
3-15. CD BOARD

–15 –
qa CD mechanism bloc
k
CD mechanism block
0arm
1PWH 2.6x10
4PWH 2.6x10
8PWH 2.6x10
5
7
6
9
2gear, drive
3gear
arm
chassis
chassis
1scews +B tapping
2scews +B tapping
3cabinet (rear), speaker
4bracket, cover
qa BVTP 3x10
qs BVTP 3x10
qd B 4x6
9BTP 2.6x8
0speaker board
qf power board
5CNP903
6CNP911
7CNP901
8CNP902
3-16. CD MECHANISM BLOCK
3-17. POWER BOARD

–16 –
Tape Speed Adjustment
Procedure:
Mode: playback
32 Ω
test tape
WS-48B
(3 kHz, 0 dB)
set
i
(
headphones
)
j
ack
(
J301
)
digital frequenc
y
counter
Mode Tension Meter Meter Reading
FWD CQ-403A more than 100 g
REV CQ-403R (more than 3.52 oz)
Mode Torque Meter Meter Reading
3.53 –5.98 mN•m
FWD (36 –61 g•cm)
CQ-102C (0.50 –0.89 oz•inch)
FWD 0.20 –0.58 mN•m
Back tension (2.0 –6.0 g•cm)
(0.028 –0.076 oz•inch)
3.53 –5.98 mN•m
REV (36 –61 g•cm)
CQ-102RC (0.50 –0.89 oz•inch)
REV 0.20 –0.58 mN•m
Back tension (2.0 –6.0 g•cm)
(0.028 –0.076 oz•inch)
5.99 –14.02 mN•m
FF, REW CQ-201B (61 –143 g•cm)
(0.89 –2.00 oz•inch)
Adjust so that the frequency at the beginning and that at the end of
tape winding are between 2,955 and 3,045 Hz.
Adjustment Location:
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 portion.)
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
5-1.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 4 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-A100 10 kHz, –10 dB Head azimuth adjustment
Digital frequency counter
2,970 to 3,030 Hz
Adjust so that the value on the frequency counter is 3,000 Hz.
SpecificationValues:
TC board
M691
TAPE SPEED
Adjustment

–17 –
screw
position
L-CH
peak
within
1dB
output
level
L-CH
peak R-CH
peak
within
1dB
scre
w
angle
R-CH
peak
3. Phase Check
Mode: FWD/REV playback
4. After the adjustment, lock the screws with locking compound.
Record/Playback/Erase Head Azimuth Adjustment
Procedure:
1. Mode: FWD/REV 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.
Adjustment Location:
+
–
set
32 Ω
level meter
test tape
P-4-A100
(10 kHz, –10 dB)
i(headphones) jack (J301)
+
–
VH
+
–
Screen pattern
set
L-CH 32 Ω
test tape
P-4-A100
(10 kHz, –10 dB)
i(headphones) jack (J301)
R-CH 32 Ω
oscilloscope
Good Wrong
in phase 45 °90 °135 °180 °
screwdriver
FWD
(forward)
REV
(reverse)

–18 –
FM FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display 87.5 MHz 108 MHz
Reading on Digital voltmeter 1.5 ± 0.1V 3.8 ± 0.4V
Adjustment Part L2 <confirmation>
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1 CT1
87.5 MHz 108 MHz
FM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T2
10.7 MHz (Display: 98 MHz)
AM FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display 530 kHz 1,710 kHz
Reading on Digital voltmeter 0.9 ± 0.1V 5.1 ± 0.4V
Adjustment Part T4 <confirmation>
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
T3 CT3
620 kHz 1,400 kHz
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
450 kHz (Display: 1,000 kHz)
Adjustment Location: TUNER board (See page 19.)
5-2.TUNER SECTION 0 dB = 1 µV
•FM Section
Setting:
BAND button: FM
75 kHz frequency
deviation by 1 kHz signal
output level :as low as possible
•AM Section
Setting:
BAND button: AM
30% amplitude
modulation by 400 Hz signal
output level :as low as possible
•Connecting Level Meter (FM and AM)
FM termina
l
(J1)
FM RF signal
generator
0.01 µF
set
Put the lead-wire
antenna close to
the AM loop
antenna.
AM RF signal
generator
i(headphones) jack (J301)
set
32 Ω
level meter
(range: 0.5-5 V ac
)
digital
voltmeter
tuner board
TP (VT)
•Connecting DigitalVoltmeter (FM and AM)
•Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.

–19 –
AdjustmentLocation:
L2
FM
FREQUENCY
COVERAGE
ADJUSTMENT
T4
AM
FREQUENCY
COVERAGE
ADJUSTMENT
T1
AM IF
ADJUSTMENT
CT1 L1
FM TRACKING
ADJUSTMENT T3 CT3
AM TRACKING
ADJUSTMENT
TP(VT)
TM1
FM
TERMINAL
–TUNER BOARD (COMPONENT SIDE) –
T2
FM IF
ADJUSTMENT
(conductor side
)

–20 –
Adjustment Location: CD board
TP(RF)
IC701
IC702
–CD BOARD (CONDUCTOR SIDE) –
5-3. CD SECTION
Focus Bias Check
This check is to be done when the optical block replaced.
Check Procedure:
1. Connect the oscilloscope to test point TP (RF) on CD board.
Insert disk (YEDS-18 (3-702-101-01)).
2. Press the ubutton.
3. Check 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.
4. Release test mode after adjustment is completed.
•RF signal reference waveform (eye pattern)
VOLT/DIV : 50mV
TIME/DIV : 500 ns
(With the 10:1 probe in use)
1.1- 1.3 Vp-p
When observing the eye pattern, set the oscilloscope for AC range
and raise vertical sensitivity.