Sony PMCD-307 Service manual

PMC-D307

SERVICE MANUAL

Ver 1.0 1999. 05

Section

Tape

Section

Canadian Model

E Model

Model Name Using Similar Mechanism PMC-D305 CD Mechanism Type KSM-213CDM Optical Pick-up Name KSS-213C Model Name Using Similar Mechanism NEW T ape Transport Mechanism Type MF-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

Frequency response

20 - 20,000 Hz +1/–2.5 dB

Wow and flutter

Below measurable limit

Radio section

Frequency range

FM: 87.6 - 108 MHz AM: 530 - 1,710 kHz

Aerials

FM: Lead aerial AM: External aerial terminal

SPECIFICA TIONS

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

Input

LINE 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

Power output

10 W + 10 W (at 6.0 ohms, 10% harmonic distortion)

Power requirements

For personal component system: 120 V AC, 60 Hz For remote commander: 3 V DC, 2 size AA (R6) batteries

– Continued on next page –

MICROFILM

PERSONAL COMPONENT SYSTEM

– 1 –

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 × 210 × 200 mm

(w/h/d) (5 1/8 × 8 3/8 × 7 7/8 inches)

Mass

Player: 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-C305A (1) AM loop aerial (1) Audio connecting cord (1) Slip stoppers (8)

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. IC Pin Description............................................................. 18

6-2. Circuit Boards Location .................................................... 20

6-3. Block Diagram –Tuner Section–....................................... 21

6-4. Block Diagram –CD Section–........................................... 23

6-5. Block Diagram –Tape Section– ........................................ 25

6-6. Printed Wiring Board –Tuner Section–............................. 27

6-7. Schematic Diagram –Tuner Section–................................ 29

6-8. Printed Wiring Boards –CD Section– ...............................31

6-9. Schematic Diagram –CD Section–.................................... 33

6-10. Printed Wiring Boards –Main Section– ............................ 36

6-11. Schematic Diagram –Main Section–................................. 39

6-12. Printed Wiring Boards –Control Section–......................... 42

6-13. Schematic Diagram –Control Section– ............................. 45

6-14. Printed Wiring Boards –Power Amplifier Section– .......... 47

6-15. Schematic Diagram –Power Amplifier Section– .............. 49

7. EXPLODED VIEWS

7-1. Case Section ...................................................................... 55

7-2. Cabinet (Front) Section ..................................................... 56

7-3. Cabinet (CD) Section ........................................................ 57

7-4. Optical Pick-up Section .................................................... 58

7-5. Tape Mechanism Deck Section-1...................................... 59

7-6. Tape Mechanism Deck Section-2...................................... 60

7-7. Speaker (L) Section........................................................... 61

7-8. Speaker (R) Section .......................................................... 62

8. ELECTRICAL PARTS LIST ........................................63

– 2 –

SECTION 1

SERVICING NOTES

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.

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 breakdo wn 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.

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

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

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 P ART NUMBERS APPEAR AS SHOWN IN THIS MANU AL OR IN SUPPLEMENTS PUBLISHED BY SONY.

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!!

LES COMPOSANTS IDENTIFIÉS P AR UNE MARQUE ! SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES 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.

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 –

2-1. LOCATION OF CONTROLS

SECTION 2

GENERAL

– upper side view –

– front side view –

8 9

11 12

234

20 21

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. 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

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 –

(

SECTION 3

DISASSEMBLY

• The equipment can be removed using the following procedure.

Set Cabinet (rear)

Rear chassis

Note : Follow the disassembly procedure in the numerical order given.

3-1. CABINET (REAR)

Case (lower) section Cabinet (CD) section Optical

Tape mechanism deck section

speaker) section Amplifier, terminal, jack board Power board

CD, Control board

KTP 3x10

pick-up section

KTP 3x10

cabinet (rear)

BVTP 3x10

– 5 –

3-2. CASE (LOWER) SECTION

BVTP 3x10

earth lead

case (lower) section

parallel wire (27 core)

(CN303)

CN301, CNP302, 304, 306, 307

3-3. TAPE MECHANISM DECK SECTION

BVTP 3x10

tape mechanism

deck section

P 2.6x8

BVTP 3x10

– 6 –

3-4. CABINET (CD) SECTION

CNP705

cabinet (CD) section

CNP802, 803

3-5. CD, CONTROL BOARD

BVTP 3x10

FFC cable 16P

(optical pick-up)

CD board

claws

BVTP 3x10

parallel wire (9 core)

(CNP706)

CONTROL boar

P 2.6x8

CNP707

– 7 –

S801

3-6. OPTICAL PICK-UP SECTION

screws (2.6x16)

optical pick-up section

3-7. REAR CHASSIS (SPEAKER) SECTION

CNP504

rear chassis (speaker) assy

B 3.5x16, tapping

– 8 –

B 3.5x16, tapping

3-8. AMPLIFIER, TERMINAL, JACK BOARD

AMPLIFIER board

BVTP 3x10

JACK board

TERMINAL board

CNP503

BVTP 3x1

CNP505

3-9. POWER BO ARD

BVTP 3x10

CNP501

P 4x

POWER board

– 9 –

P 3x6

P 4x6

SECTION 4

MECHANICAL ADJUSTMENTS

SECTION 5

ELECTRICAL 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 demagnetizer. (Do not bring the head demagnetizer close to the erase 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 supply voltage unless otherwise noted.

Torque Measurement

Mode Torque Meter Meter Reading

FWD FWD 2.0 – 6.0 g•cm

Back tension (0.028 – 0.076 oz•inch) REV REV 2.0 – 6.0 g•cm

Back tension (0.028 – 0.076 oz•inch) FF, REW CQ-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 OUT PHONES

Load impedance 6 Ω 32 Ω Output level 0.775 V (0 dB) 0.25 V (–10 dB)

Test T ape

Type Signal Used for

WS-48B 3 kHz, 0 dB Tape speed adjustment P-4-A063 6.3 kHz, –10 dB Head azimuth adjustment

T ape Speed Adjustment

Procedure:

Mode: playback

digital frequency

counter

Ω

test tape WS-48B (3 kHz, 0dB)

T ape T ension Measurement

Mode Tension Meter Meter Reading

FWD CQ-403A

REV CQ-403R

(more than 3.17 oz)

more than 90 g

set

(headphones) jack (J301)

Adjust so that the value on the digital frequency counter is 3,000 Hz.

Specification Value:

Digital Frequency counter

2,970 to 3,030 Hz

Adjust so that the frequency at the beginning and that at the end of tape winding are between 2,970 to 3,030 Hz.

Adjustment Location:

adjustable resistor

M691

– 10 –

Record/Playback/Erase Head Azimuth Adjustment

Procedure:

1. Mode: playback

test tape P-4-A063 (6.3 kHz, –10 dB)

set

level meter

Ω

+ –

(headphones) jack (J301)

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

L-CH peak

Ω

(headphones) jack (J301)

Screen pattern

R-CH peak

oscilloscope

–

within 1dB

screw angle

reverse

screwdriver

in phase 45

°90°

Good Wrong

135°180

4. After the adjustment, lock the screws with locking compound.

– 11 –

TUNER SECTION 0 dB = 1 µV

• 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

FM lead-wire antenna (CNP2)

set

FM FREQUENCY COVERAGE

ADJUSTMENT

Frequency Display 87.6 MHz 108 MHz Reading on Digital voltmeter 1.6 ± 0.4V 6.5 ± 0.5V Adjustment Part L2 <confirmation>

Note: Not use the FM RF signal generator in this adjustment.

FM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

L1 CT1

87.6 MHz 108 MHz

• AM Section

Setting:

FUNCTION button: AM

AM RF signal generator

Put the lead-wire antenna close to AM loop antenna.

30% amplitude modulation by 400 Hz signal output level : as low as possible

• Connecting Level Meter (FM and AM)

level meter (range: 0.5-5 V ac)

Ω

set

(headphones) jack (J301)

• Connecting Digital Voltmeter (FM and AM)

AM FREQUENCY COVERAGE

ADJUSTMENT

Frequency Display 530 kHz 1,710 kHz Reading on Digital voltmeter 1.0 ± 0.5 V 5.0 ± 1.0 V Adjustment Part L4 <confirmation>

Note: Not use the AM RF signal generator in this confirm.

AM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

L3 CT2

620 kHz 1,400 kHz

AM IF ADJUSTMENT

Adjust for a maximum reading on level meter.

CFT1

450 kHz

Adjustment Location: TUNER board (See page 13.)

–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.

– 12 –

Adjustment Location:

FM FREQUENCY

COVERAGE

ADJUSTMENT

–tuner board (component side)–

TP (VT)

CFT1

AM IF

ADJUSTMENT

FM TRACKING

ADJUSTMENT

CT1

AM FREQUENCY

COVERAGE

ADJUSTMENT

L3 CT2

AM TRACKING

ADJUSTMENT

– 13 –

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 that the oscilloscope traverse wa veform 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.

0 V

A=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

Note: When the malfunction is occurred by mis-passing other keys, turn

off the power and check again from making the test mode.

– 14 –

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

0.2 Vp-p

1.3

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 of f, 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. low low 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 inter rupted during PLAY. Or time counter display stops — low progressing.

• More noise during 2-axis device operation.

Focus Tracking

—low

high high

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 –

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.

Adjustment Location: CD board (See page 17.)

low focus gain

high focus gain

VOLT/DIV: 100 mV TIME/DIV:2ms

250 mV

0 V

VOLT/DIV: 100 mV TIME/DIV:2ms

100 mV 75 mV

0 V

– 16 –

)

Connection and Adjustment Location:

–CD board (conductor side)–

(RF)

TRACKING

(FOCUS-Y

IC701

FOCUS

–CD board (component side)–

FOCUS BIAS

ADJUSTMENT

CNP706

RV701

(TRACKING-Y)

RV703 E-F BALANCE ADJUSTMENT

(VC)

RV704

TRACKING GAIN

ADJUSTMENT

RV702

FOCUS GAIN

ADJUSTMENT

CNP701

– 17 –

+ 39 hidden pages