Sony PMC-D407L Service Manual

PMC-D407L

SERVICE MANUAL

Ver 1.0 1998.09

Section

Tape

Section

AEP Model

Model Name Using Similar Mechanism PMC-D307L CD Mechanism Type KSM-213CDM Optical Pick-up Name KSS-213C Model Name Using Similar Mechanism PMC-D307L 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 Except Italian model 87.6 - 107 MHz

Italian model 87.5 - 108 MHz MW 531 - 1,602 kHz LW 153 - 279 kHz

FM: 10.7 MHz MW/LW: 450 kHz

Aerials

FM: External aerial terminal MW/LW: 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

Super woofer

Speaker

Woofer: 10 cm (4 in.) dia., 4.0 ohms, cone type

Power output

30 W (at 100 Hz)

Power consumption

AC 30 W

Dimensions (incl. projecting parts)

Approx. 210 × 210 × 247 mm (w/h/d) (8 3/8 × 8 3/8 × 9 3/4 inches)

Mass

Approx. 4.1 kg (9 lb. 1 oz.)

– Continued on next page –

MICROFILM

PERSONAL COMPONENT SYSTEM

– 1 –

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

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

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-C305AD (1) FM lead aerial (1) MW/LW loop aerial (1) Audio connecting cord (2)

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) Section ........................................................ 5

3-2. Case (Lower) Section .......................................................... 6

3-3. Tape Mechanism Deck, Line Board .................................... 6

3-4. Cabinet (CD) Section .......................................................... 7

3-5. CD, System Board............................................................... 7

3-6. RDS Board, LCD Section ................................................... 8

3-7. Optical Pick-up Section.......................................................8

3-8. Rear Chassis (Speaker) Assy ............................................... 9

3-9. Power Amp, Terminal, Jack Board...................................... 9

3-10. Power Board...................................................................... 10

3-11. Rear Chassis (Woofer Speaker) Assy................................ 10

3-12. S/Woofer Amp Board........................................................ 11

3-13. Woofer Power Board ......................................................... 11

4. MECHANICAL ADJUSTMENTS............................... 12

5. ELECTRICAL ADJUSTMENTS

Tape Section ..........................................................................12

Tuner Section.........................................................................14

CD Section ............................................................................ 16

6. DIAGRAMS

6-1. IC Pin Description............................................................. 20

6-2. Circuit Boards Location .................................................... 21

6-3. Block Diagram –Tuner Section–....................................... 23

6-4. Block Diagram –CD Section–........................................... 25

6-5. Block Diagram –Tape Section– ........................................ 27

6-6. Printed Wiring Board –Tuner Section– ............................. 29

6-7. Schematic Diagram –Tuner Section–................................ 31

6-8. Printed Wiring Boards –RDS Section– ............................. 33

6-9. Schematic Diagram –RDS Section– ................................. 35

6-10. Printed Wiring Boards –CD Section– ............................... 37

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

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

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

6-14. Printed Wiring Boards –Control Section–......................... 48

6-15. Schematic Diagram –Control Section– ............................. 51

6-16. Printed Wiring Boards –Woofer Speaker Section– ........... 55

6-17. Schematic Diagram –Woofer Speaker Section– ............... 57

6-18. Printed Wiring Boards –Power Amplifier Section– .......... 59

6-19. Schematic Diagram –Power Amplifier Section– ..............61

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 AR T NUMBERS APPEAR AS SHO WN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

7. EXPLODED VIEWS

7-1. Case Section ......................................................................68

7-2. Cabinet (Front) Section ..................................................... 69

7-3. Cabinet (CD) Section ........................................................ 70

7-4. Optical Pick-up Section..................................................... 71

7-5. Tape Mechanism Deck Section-1 ...................................... 72

7-6. Tape Mechanism Deck Section-2 ...................................... 73

7-7. Speaker (L) Section........................................................... 74

7-8. Speaker (R) Section........................................................... 75

7-9. Woofer Speaker Section .................................................... 76

8. ELECTRICAL PARTS LIST ........................................ 77

– 2 –

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 OPERATE 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.

– 3 –

2-1. LOCATION OF CONTROLS

SECTION 2

GENERAL

– upper side view –

8 9

11 12

– front side view –

234

1. 6 PUSH OPEN/CLOSE button (CD)

2. PLAY MODE MONO/ST ISS button

3. PGM SET AUTO PRESET button

4. SOUND button

5. 2 (Headphones) jack

6. RDS display window

7. OPERATE (power) button

8. Display window

9. Remote sensor window

10. FUNCTION button

11. TAPE operation buttons

9 (Reverse side playback) button ( (Front side playback) button p (Stop) button

12. DIR MODE button

13. r/P (Recording/pause) button

21 22

2425

14. RADIO operation buttons BAND button PRESET – button PRESET + button

15. OPTICAL DIGITAL OUT (CD) jack

16. VOLUME +/– button

17. DISPLAY ENTER/MEM button

18. =/+, TUNE –/+ button

19. 0/) button

20. CD operation buttons

( (Playback) button P (Pause) button p (Stop) button

21. 6 PUSH (cassette holder open) button

22. Cassette holder

23. OPEN $ knob

24. LINE OUT jack

25. LINE IN jack

– 4 –

SECTION 3

DISASSEMBLY

• The equipment can be removed using the following procedure.

Set Cabinet (rear) Case (lower) Cabinet (CD) CD, System RDS board, LCD section

section section section board Optical pick-up section

Tape mechanism deck, Line board

Rear chassis (speaker) assy Power Amp, Terminal, Jack board Power board Rear chassis (woofer speaker) assy S/Woofer Amp board Woofer power board

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

3-1. CABINET (REAR) SECTION

KTP 3x10

cabinet (rear) section

BVTP 3x10

KH312

BVTP 3x10

– 5 –

3-2. CASE (LOWER) SECTION

BVTP 3x10

earth lead

case (lower) section

parallel wire (27 core)

(CNP801)

CNP3, 301, 303, 305, 307, 310, 311

3-3. TAPE MECHANISM DECK, LINE BOARD

BVTP 3x10

LINE board

P 2.6x8

BVTP 3x10

tape mechanism

deck

CNP705

– 6 –

3-4. CABINET (CD) SECTION

CNP705

cabinet (CD) section

CNP802, 803

3-5. CD, SYSTEM BOARD

BVTP 3x10

FFC cable 16P

(optical pick-up)

CD board

claws

BVTP 3x10

parallel wire (9 core)

(CNP706)

SYSTEM board

BTP 2.6x8

CNP804

CNP707

– 7 –

S801

3-6. RDS BOARD, LCD SECTION

P 2.6x8

RDS board

parallel wire (19 core)

(CNP402, 403)

parallel wire (19 core)

(CNP401, 404)

LCD section

3-7. OPTICAL PICK-UP SECTION

screw (2.6x16)

BTP 2.6x8

optical pick-up section

– 8 –

3-8. REAR CHASSIS (SPEAKER) ASSY

CNP504

rear chassis (speaker) assy

screw B tappin

3-9. POWER AMP, TERMINAL, JACK BOARD

BTP 3x10

BVTP 3x10

screw B tapping

JACK board

TERMINAL board

CNP503

BVTP 3x1

CNP505

POWER AMP board

BVTP 3x10

– 9 –

3-10. POWER BOARD

CNP501

P 4x

POWER board

3-11. REAR CHASSIS (WOOFER SPEAKER) ASSY

CNP601

P 4x6

P 3x6

CNP603

rear chassis (woofer speaker) assy

screw +B tapping

– 10 –

screw +B tapping

3-12. S/WOOFER AMP BOARD

BVTP 3x10

S/WOOFER AMP board

CNP602

CNP605

BTP 3x1

3-13. WOOFER POWER BOARD

P 4x6

CNP606

P 4x6

WOOFER POWER board

– 11 –

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 head.)

3. Do not use a magnetized screwdriver for the adjustments.

4. After the adjustments, apply suitable locking compound to the parts adjusted.

5. The adjustments should be performed with the rated power supply voltage unless otherwise noted.

Torque Measurement

Mode Torque Meter Meter Reading

FWD 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)

T ape Tension Measurement

Mode Tension Meter Meter Reading

FWD CQ-403A REV CQ-403R

more than 90 g

(more than 3.17 oz)

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

Tape Speed Adjustment

Procedure:

Mode: playback

digital frequency

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

set

Adjust so that the value on the frequency counter is 3 kHz.

counter

Ω

(headphones) jack

Specification Values:

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 and 3,030 Hz.

Adjustment Location:

adjustable resistor

M691

– 12 –

Record/Playback Head Azimuth Adjustment

Procedure:

1. Mode: playback

test tape P-4-A063 (6.3 kHz, –10 dB)

set

level meter

Ω

+ –

(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

(headphones) jack

Screen pattern

L-CH peak

Ω

R-CH peak

oscilloscope

–

within 1dB

screw angle

reverse

screwdriver

in phase 45

Good Wrong

90 °135 °180

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

– 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

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

EXT ANT FM jack (CNP2)

set

Put the lead-wire antenna close to the set.

FM FREQUENCY COVERAGE

ADJUSTMENT

Frequency Display 87.5 MHz 108 MHz Reading on Digital voltmeter 1.3 V or more 9.0 V or less Adjustment Part <confirmation> <confirmation>

FM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

87.5 MHz 108 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>

MW TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

L3 CT4

621 kHz 1,404 kHz

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

• Connecting Level Meter (FM, MW and LW)

level meter (range: 0.5-5 V ac

Ω

set

(headphones) jack

• Connecting Digital Voltmeter (FM, MW and LW)

digital voltmeter

tuner board TP (VT)

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

L W TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

L5 CT5

162 kHz 261 kHz

Adjustment Location: TUNER board (See page 15.)

• Repeat the procedures in each adjustment several times, and the frequency coverage and tracking adjustments should be finally done by the trimmer capacitors.

– 14 –

Adjustment Location:

– tuner board (component side) –

(VT)

CFT1

AM IF

ADJUSTMENT

IC1

FREQUENCY

COVERAGE

ADJUSTMENT

TU1

CT4 L3

TRACKING

ADJUSTMENT

CT5 L5

LW TRACKING ADJUSTMEN

– 15 –

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.

[SW1 BOARD] (Conductor Side)

TEST1 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.

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 19.)

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.

– 16 –

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 16.)

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. 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 interrupted 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 19.)

– 17 –

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 16.)

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 19.)

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

– 18 –

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

– 19 –

SECTION 6

DIAGRAMS

6-1. IC PIN DESCRIPTION

• IC801 CXP83120A-022Q (SYSTEM CONTROL, LCD DRIVE)

Pin No. Pin Name I/O Pin Description

1 AC CHK I AC check input 2 C-SCOR I CD-SCOR input 3 RMC I Remote commander input 4 C-XRST O CD system reset output 5 C-XLAT O CD DSP (IC702) command latch output 6 C-DAT O CD DSP (IC702) command data output 7 C-CLK O Clock output for CD DSP (IC702) command 8 C-DOOR I Open/close detection input (“L”: close, “H”: open)

9 328/332 I 328/332 select input (Fixed at “H”.) 10 C-SENS I CD-SENS input 11 C-SQCK O Clock output for CD SUB-Q. 12 C-SQSO I CD SUB-Q input 13 T-BIAS I Tape REC BIAS input 14 — — Not used. (Open) 15 T-REC I Tape REC input 16 T-SOL O Plunger control output 17 T-MODE O HEAD switching output 18 T-AMS I AMS sensitivity switching 19 T-MCON O Motor control output (“H”: Motor ON) 20 P-CON O Power on/off control output 21 V-CLK O Volume clock output 22 V-DAT O Volume data output 23 V-CE O Electrical volume (IC302) chip enable output 24 R-ST I Stereo detection input 25 R-COUNT I Tuner PLL IC count input 26 R-DAT O Tuner PLL IC data output 27 R-CLK O Tuner PLL IC clock output 28 R-CE O Tuner PLL IC chip enable output 29 9K/10K I 9K/10K select input (Fixed at “H”.) 30 T-STAT I Tape detection input

31 – 34 KEY-0 – 3 I Key return signal input

35 INIT O Initial setting output (Not used.) 36 SIMUKE I Destination setting terminal (Fixed at “H”.) 37 SFC O Shift clock ON/OFF out 38 RST I Reset input 39 EXTAL1 I Clock oscillation input (4.19 MHz) 40 XTAL1 O Clock oscillation output (4.19 MHz) 41 VSS — Ground (for A/D converter) 42 XTAL2 O Clock oscillation output (Not used.) 43 EXTAL2 I Clock oscillation output (Fixed at “L”.) 44 AVREF I Reference voltage input (for A/D converter) 45 AVSS — Ground (for A/D converter) 46 VL O LCD bias resistor current control terminal (Cut off at standby)

47 – 49 VLC3 – 1 — LCD bias power supply terminal 50 – 53 COM0 – 3 O LCD common signal output terminal 54 – 77 SEG0 – 23 O LCD segment signal output terminal 78 – 84 NC — Not used. (Open) 85 – 87 — — Not used. (Open)

88 BL-CONT O LCD Back light control output 89 VDD — Power supply (+5 V)

– 20 –

Pin No. Pin Name I/O Pin Description

90 NC — Connected to the power supply. 91 VSS — Ground 92 TX O Crystal connection for clock oscillation. (32.768 kHz) 93 TEX I Crystal connection for clock oscillation. (32.768 kHz) 94 C-MUTE O Mute output for CD. 95 B-MUTE O Mute output for Tuner. 96 A-MUTE O Mute output for Audio. 97 ISS1 I ISS1 switch input 98 ISS2 I ISS2 switch input 99 T-END I Tape end detection input

100 NC — Not used. (Open)

6-2. CIRCUIT BOARDS LOCATION

– Main Section –

H/P board

RDS.LCD board

LAMP1 board

SW1 board

HEAD board

SW2 board

RDS board

SYSTEM board

REGULATOR board

CD board

CD MOTOR board

LAMP2 board

AUDIO board

SW board

LINE board

TUNER board

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+ 47 hidden pages