Sharp CDPC-671-H, CDPC-651-H Service manual

Illustration: CD-PC671H

CD-PC671H/651H

SERVICE MANUAL

No. S5930CDPC671H

CD-PC671H

CD-PC671H mini component system consisting of CD-PC671H (main
unit), CP-C671H (front speakers), CP-SW671H (sub woofer),
GBOXS0026AWM1 (center speaker) and GBOXS0027AWM1
(surround speakers).

CD-PC651H

CD-PC651H mini component system consisting of CD-PC651H (main
unit), CP-C651H (front speakers), GBOXS0026AWM1 (center speaker)
and GBOXS0027AWM1 (surround speakers).

• In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.

• Note for users in U.K.

Recording and playback of any material may require consent
which SHARP is unable to give. Please refer particularly to the
provisions of Copyright Act 1956, the Dramatic and Musical

Illustration: CD-PC651H

Prefomers Protection Act 1956, the Preformers Protection Acts
1963 and 1972 and to any subsequent statutory enactments and
orders.

CONTENTS

SAFETY PRECAUTION FOR SERVICE MANUAL ........................................................................................................... 2

IMPORTANT SERVICE NOTES ( FOR U.K. ONLY) ......................................................................................................... 2

SPECIFICATIONS ..............................................................................................................................................................3

NAMES OF PARTS ........................................................................................................................................................... 4

OPERATION MANUAL ...................................................................................................................................................... 7

DISASSEMBLY.................................................................................................................................................................. 8

REMOVING AND REINSTALLING THE MAIN PARTS................................................................................................... 11

ADJUSTMENT ................................................................................................................................................................. 11

NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 18

BLOCK DIAGRAM ........................................................................................................................................................... 19

SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD.............................................................................................. 22

VOLTAGE ........................................................................................................................................................................ 46

WAVEFORMS OF CD CIRCUIT...................................................................................................................................... 47

TROUBLESHOOTING (CD SECTION) ........................................................................................................................... 48

FUNCTION TABLE OF IC................................................................................................................................................ 53

FL DISPLAY......................................................................................................................................................................60

WIRING OF PRIMARILY SUPPLY LEADS (FOR U.K. ONLY).........................................................................................61

PARTS GUIDE/EXPLODED VIEW
PACKING METHOD (FOR U.K. ONLY)

Page

DIFFERENCE BETWEEN CD-PC671H AND CD-PC651H

CD-PC671H CD-PC651H

Sub woofer

This document has been published to be used

SHARP CORPORATION

– 1 –

for after sales service only.
The contents are subject to change without notice.

CD-PC671H/PC651H

SAFETY PRECAUTION FOR

SERVICE MANUAL

Precaution to be taken when replacing and servicing the
Laser Pickup.

The AEL (Accessible Emission Level) of Laser Power Output
for this model is specified to be lower than Class I Requirements.
However, the following precautions must be observed during
servicing to protect your eyes against exposure to the Laser
beam.

(1) When the cabinet has been removed, the power is turned

on without a compact disc, and the Pickup is on a position
outer than the lead-in position, the Laser will light for several
seconds to detect a disc. Do not look into the Pickup Lens.

(2) The Laser Power Output of the Pickup inside the unit and

replacement service parts have already been adjusted prior
to shipping.

(3) No adjustment to the Laser Power should be attempted

when replacing or servicing the Pickup.

(4) Under no circumstances look directly into the Pickup Lens

at any time.

(5) CAUTION - Use of controls or adjustments, or performance

of procedures other than those specified herein may result
in hazardous radiation exposure.

(Except for U.K.)

(For U.K.)

Laser Diode Properties

Material: GaAIAs
Wavelength: 780 nm
Emission Duration: continuous
Laser Output: max. 0.6 mW

LASER KLASSE 1
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT

IMPORTANT SERVICE NOTES (FOR U.K. ONLY)

Before returning the unit to the customer after completion of a
repair or adjustment it is necessary for the following withstand
voltage test to be applied to ensure the unit is safe for the
customer to use.
Setting of Withstanding Voltage Tester and set.

Set name set value
Withstanding Voltage Tester
Test voltage 4,240 VPEAK

3,000 VRMS
Set time 6 secs
Set current(Cutoff current) 4 mA
Unit
Judgment
OK: The “GOOD” lamp lights.

NG: The “NG” lamp lights and the buzzor sounds.

CAUTION-INVISIBLE LASER RADIATION WHEN OPEN. DO NOT STARE INTO
BEAM OR VIEW DIRECTLY WITH OPTICAL INSTRUMENTS.

VARNING-OSYNLIG LASERSTRALNING NAR DENNA DEL AR OPPNAD. STIRRA
EJ IN I STRALEN OCH BETRAKTA EJ STRALEN MED OPTISKA INSTRUMENT.

ADVERSEL-USYNLIG LASERSTRALING VED ABNING. SE IKKE IND I
STRALEN-HELLER IKKE MED OPTISKE INSTRUMENTER.

VARO! AVATTAESSA OLET ALTTIINA NAKYMATON LASERSATEILYLLE.
ALA TUIJOTA SATEESEEN ALAKA KATSO SITA OPTISEN LAITTEEN LAPI.

VARNING-OSYNLIG LASERSTRALNING NAR DENNA DEL AR OPPNAD.
STIRRA EJ IN I STRALEN OCH BETRAKTA EJ STRALEN GENOM OPTISKT
INSTRUMENT.

ADVERSEL-USYNLIG LASERSTRALING NAR DEKSEL APNES. STIRR IKKE
INN I STRALEN ELLER SE DIREKTE MED OPTISKE INSTRUMENTER.

VAROITUS! LAITTEEN KéYTTéMINEN MUULLA KUIN
TéSSé
KéYTTô OHJEESSA MAINITULLA TAVALLA SAATTAA
ALTISTAA KéY TTéJéN TURVALLISUUSLUOKAN 1
YLITTéVéLLE NéKYMéTTôMéLLE LASERSéTEILYLLE.

VARNING - OM APPARATEN ANVéNDS Pè ANNAT SéTT
éN I DENNA BRUKSANVISNING SPECIFICERAS. KAN
ANVéNDAREN UTSéTTAS FôR OSYNLIG
LASERSTRèLNING, SOM ôVERSKRIDER GRéNSEN FôR
LASERKLASS 1.

WITHSTANDING
VOLTAGE TESTER

AC

+

OUT

PROBE

-

SHORT-CIRCUIT
AC POWER
SUPPLY CORD

UNIT

CONNECT THE PROBE
TO GND OF CHASSIS

SCREW

– 2 –

CD-PC671H/651H

g

)

FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.

SPECIFICATIONS

CD-PC671H/651H

● General

Power source: AC 230 V, 50 Hz
Power consumption: 140 W
Dimensions: Width; 270 mm (10-5/8")

Height; 300 mm (11-13/16")
Depth; 362 mm (14-1/4")

Weight: 8.1 kg (17.7 lbs.)

● Amplifier section

Output power: Front speakers;

RMS; 80 W (40 W + 40 W)
(10 % T.H.D.)
RMS; 72 W (36 W + 36 W)
(0.9 % T.H.D.)
Center speaker;
RMS; 20 W (10 % T.H.D)
RMS; 14 W (0.9 % T.H.D)
Surround speakers;
RMS; 20 W (10 W + 10 W)
(10 % T.H.D.)
RMS; 14 W (7 W + 7 W)
(0.9 % T.H.D.)
Sub woofer;
RMS; 40 W (10 % T.H.D)
RMS; 32 W (0.9 % T.H.D)

Output terminals: Front speakers; 6 ohms

Centre speaker; 4 ohms
Surround speakers; 8 ohms
Sub woofer; 6 ohms
Headphones; 16-50 ohms
(recommended; 32 ohms)
CD digital output (optical)

Input terminals: Video/Auxiliary (audio signal)

× 2; 500 mV/47 kohms

● Compact disc player section

Type: 3-disc multi-play compact disc

player

Signal readout: Non-contact, 3-beam semi-

conductor laser pickup

D/A converter: 1-bit D/A converter
Frequency response: 20 - 20,000 Hz
Dynamic range: 90 dB (1 kHz)

● Tuner section

Frequency range: FM; 87.5-108 MHz

AM; 522-1,620 kHz

● Front speaker section

CP-C671H

Type: 3-way type [13 cm (5-1/4") woofer,

5 cm (2") tweeter and super tweeter]

Maximum input power: 80 W
Rated input power: 40 W
Impedance: 6 ohms
Dimensions: Width; 200 mm (7-7/8")

Height; 300 mm (11-13/16")
Depth; 254 mm (10")

Weight: 2.9 kg (6.3 lbs.)/each

● Front speaker section

CP-C651H

Type: 2-way type [13 cm (5-1/4") woofer

and 5 cm (2") tweeter]

Maximum input power: 60 W
Rated input power: 30 W
Impedance: 6 ohms
Dimensions: Width; 200 mm (7-7/8")

Height; 300 mm (11-13/16")
Depth; 240 mm (9-7/16")

Weight: 2.9 kg (6.3 lbs.)/each

● Center speaker section

GBOXS0026AWM1

Type: 10 cm (4") full-range speaker
Maximum input power: 40 W
Rated input power: 20 W
Impedance: 4 ohms
Dimensions: Width; 260 mm (10-1/4")

Height; 140 mm (5-1/2")
Depth; 155 mm (6-1/8")

Weight: 0.9 kg (2.0 lbs.)

● Surround speaker section

GBOXS0027AWM1

Type: 10 cm (4") full-range speaker
Maximum input power: 20 W
Rated input power: 10 W
Impedance: 8 ohms
Dimensions: Width; 170 mm (6-3/4")

Height; 88 mm (3-1/2")
Depth; 170 mm (6-3/4")

Weight: 0.5 kg (1.0 lbs.)/each

● Cassette deck section

Frequency
response: 50-14,000 Hz (Normal tape)
Signal/noise ratio: 55 dB (TAPE 1, playback)

50 dB (TAPE 2, recording/
playback)

Wow and flutter: 0.15 % (WRMS)

● Sub woofer section (CD-PC671H Only)

CP-SW671H

Type: 13 cm (5-1/4") full-range speaker
Maximum input power: 80 W
Rated input power: 40 W
Impedance: 6 ohms
Dimensions: Width; 200 mm (7-7/8")

ht: 3.4 kg (7.5 lbs.

Wei

Height; 300 mm (11-13/16")
Depth; 310 mm (12-3/8")

Specifications for this model are subject to change without
prior notice.

– 3 –

CD-PC671H/PC651H

CD-PC671H/651H

■ Front panel

11.

Disc Number Selector Buttons

12.

Disc Tray

13.

Multi Indicator

14.

Disc Skip Button

15.

Open/Close Button

16.

Dolby Pro Logic Indicator

17.

RDS Indicator

18.

Programme Type Indicator

19.

Traffic Information Indicator

10.

Extra Bass Indicator

11.

FM Stereo Mode Indicator

12.

FM Stereo Indicator

13.

Traffic Programme Indicator

14.

Traffic Announcement Indicator

15.

(CD) Play Indicator

16.

(CD) Pause Indicator

17.

Dynamic PTY Indicator

18.

EON Indicator

19.

(CD) Repeat Indicator

20.

(CD) Disc Number Indicators

21.

(CD/TUNER) Memory Indicator

22.

Timer Play Indicator

23.

Timer Record Indicator

24.

Spectrum Analyzer/Volume Level Indicator

25.

(TAPE 2) Record Indicator

26.

Sleep Indicator

NAMES OF PARTS

11
12

1

23

6

17

18

24

7108

19

9

13
14

15
16

25 26

4

5

20
21

22
23

27.

Timer Set Indicator

28.

(TUNER) Display Mode Selector Button

29.

(TUNER) Station Selector Button

30.

(TAPE 2) Record Pause Button

31.

(CD) Track Down/Review Button

3

(TUNER) Preset Down Button

3

(TAPE 2) Rewind Button

32.

(CD) Track Up/Cue Button

3

(TUNER) Preset Up Button

3

(TAPE 2) Fast Forward Button

33.

Bypass Button

34.

Normal Button

35.

Timer/Sleep Button

36.

Clock Button

37.

(TUNER) Programme Type/Traffic Information
Search Button

38.

(TUNER) EON Button

39.

(TUNER) ASPM Button

40.

On/Stand-by Button

41.

Equalizer Mode Selector Button

42.

Dimmer Button

43.

Phantom Button

44.

Extra Bass/Demo Mode Button

45.

Volume Control

46.

Headphone Socket

47.

Function Selector Buttons

48.

Memory/Set Button

49.

(CD/TAPE) Stop Button

50.

(TAPE) Play Button

3

(CD) Play/Repeat Button

51.

Tuning and Time Up/Down Buttons

52.

Sub Woofer Volume Control

35
36

37

38
39

40

27

46

28

47

29

30

48

53

31

49

32 33 34

51

50

54

41
42

43
44

45

52

53.

(TAPE 1) Cassette Compartment

54.

(TAPE 2) Cassette Compartment

– 4 –

■ Rear panel

11.

CD Digital Output Socket

12.

AC Power Lead

13.

FM 75 Ohms Aerial Socket

14.

AM Loop Aerial Socket

15.

Video/Auxiliary (Audio Signal) Input Sockets

16.

Surround Speaker Terminals

17.

Center Speaker Terminals

18.

Front Speaker Terminals

19.

Sub Woofer Terminals (CD-PC671H Only)

■ Front speaker

CP-C671H

11.

Super Tweeter

12.

Tweeter

13.

Woofer

14.

Bass Reflex Duct

15.

Speaker Wire

2

1

1
2

3
4

CD-PC671H/651H

789

6

3

4
5

5

■ Front speakers

CP-C651H

11.

Tweeter

12.

Woofer

13.

Bass Reflex Duct

14.

Speaker Wire

■ Center speaker

GBOXS0026AWM1

16.

Full-Range Speaker

17.

Speaker Wire

■ Surround speaker

GBOXS0027AWM1

18.

Full-Range Speaker

19.

Speaker Wire

1
2

3

4

6

7

8

– 5 –

9

CD-PC671H/PC651H

■ Sub woofer (CD-PC671H Only)

CP-SW671H

10.

Woofer

11.

Bass Reflex Duct

12.

Speaker Wire

CD-PC671H/PC651H

■ Remote control

11.

Remote Control Transmitter LED

12.

Surround Level Buttons

13.

Center Level Buttons

14.

Dolby Pro Logic Button

15.

Centre Mode Button

16.

Test Tone Button

17.

Balance Control Buttons

● Tuner control section

18.

Preset Up/Down Buttons

10

11

12

1

2

3

4

8

5
6

7

● CD control section

19.

Memory Button

10.

Pause Button

11.

Stop Button

12.

Play/Repeat Button

13.

Clear Button

14.

Track Down/Review Button

15.

Random Button

16.

Track Up/Cue Button

17.

Disc Skip Button

● Tape control section

18.

(TAPE 1) Play Button

19.

(TAPE 1/2) Stop Button

20.

(TAPE 2) Record Pause Button

21.

(TAPE 2) Rewind Button

22.

(TAPE 2) Play Button

23.

(TAPE 2) Fast Forward Button

24.

Equalizer Mode Button

25.

Function Selector Buttons

26.

On/Stand-by Button

27.

Extra Bass Button

28.

Volume Up/Down Buttons

13
14

18

25

26

27

109

2419202221

11 12

15
16

17

23

28

– 6 –

OPERATION MANUAL

SETTING THE CLOCK

1

Press the ON/STAND-BY button to enter the stand-by mode.

2

Press the CLOCK button.

3

Within 5 seconds, press the MEMORY/SET button.

4

Press the TUNING/TIME ( or ) button to select the time

display mode.

"0:00" → T he 24-ho ur display wil l appear.

(0:00 - 23:59)

"AM 0:00 " → The 12-hou r display will appear.

(AM 0:00 - PM 11:59)

"AM 12:00" → The 12-hour display will appear.

(AM 12:00 - PM 11:59)

● Note that this can only be set when the unit is first installed

or it has been reset (see page 29).

5

Press the MEMORY/SET button.

6

Press the TUNING/TIME ( or ) button to adjust the hour.

● Press the TUNING/TIME ( or ) button once to advance

the time by 1 hour. Hold it down to advance continuously.

● When the 12-hour display is selected, "AM" will change auto-

matically to "PM".

7

Press the MEMORY/SET button.

8

Press the TUNING/TIME ( or ) button to adjust the

minutes.

● Press the TUNING/TIME ( or ) button once to advance

the time by 1 minute. Hold it down to change the time in 5

minute intervals.

● The hour setting will not advance even if minutes advance from

"59" to "00".

9

Press the MEMORY/SET button.

● The clock starts operating from "0" seconds.

(Seconds are not displayed.)

To see the time display:

TUNING/

TIME

( )

MEMORY/

SET

CLOCK

ON/

STAND-BY

0:00 AM 0:00 AM 12:00

2

3

4

7

6

5

8

9

Press the CLOCK button.

● The time display will appear for about 5 seconds.

Note:

● The clock display will flash on and off at the push of the CLOCK

button when the AC power supply is restored after a power

failure occurs or after the AC power lead is disconnected.

If this happens, follow the procedure below to change the clock

time.

To change the clock time:

①

Press the CLOCK button.

②

Within 5 seconds, press the MEMORY/SET button.

③

Perform steps 6 - 9 above.

To change the time display mode:

①

Perform steps 1 - 2 in the section "RESETTING THE MICRO-

COMPUTER", on page 29.

②

Perform steps 1 - 9 above.

(Main unit operation)

In this example, the clock is set for the

24-hour (0:00) system.

■

Remote control

Notes concerning use:

● Replace the batteries if the operating distance is reduced or if

the operation becomes erratic.

● Periodically clean the transmitter LED on the remote control

and the sensor on the main unit with a soft cloth.

● Exposing the sensor on the main unit to strong light may in -

terfere with operation. Change the lighting or the direction of

the unit.

● Keep the remote control away from moisture, excessive heat,

shock, and vibrations.

15

15

0.2 m - 6 m

(8" - 20')

2

1,2

RESETTING THE MICROCOMPUTER

Reset the microcomputer under the following conditions:

● To erase all of the stored memory contents (clock and timer

settings, and tuner and CD presets).

● If the display is not correct.

● If the operation is not correct.

1

Press the ON/STAND-BY button to enter the stand-by mode.

2

Whilst pressing down the button and the

button, hold down the ON/STAND-BY button for at least 1

second.

Caution:

● The operation explained above will erase all data stored in

memory including clock and timer settings, and tuner and CD

presets.

CD-PC671H/651H

– 7 –

CD-PC671H/PC651H

DISASSEMBLY

Caution on Disassembly

Follow the below-mentioned notes when disassembling
the unit and reassembling it, to keep it safe and ensure
excellent performance:

1. Take cassette tape and compact disc out of the unit.

2. Be sure to remove the power supply plug from the wall
outlet before starting to disassemble the unit.

3. Take off nylon bands or wire holders where they need to
be removed when disassembling the unit. After servicing
the unit, be sure to rearrange the leads where they were
before disassembling.

4. Take sufficient care on static electricity of integrated
circuits and other circuits when servicing.

CD-PC671H/651H

STEP R EMOVAL PROCEDURE FIGURE

1 Top Cabinet 1. Screw ..................... (A1) x4 8-1

2 Side Panel 1. Screw..................... (B1) x8 8-1

(Left/right)

3 CD Player Unit/ 1. Turn on the power supply, 8-2

CD Tray Cover open the disc tray, take out

the CD cover, and close.
(Note 1)

2. Hook....................... (C1) x3

3. Hook....................... (C2) x2

4. Socket .................... (C3) x3

5. Screw ..................... (C4) x2

4 Back Board 1. Screw ..................... (D1) x8 8-2

(with Tuner PWB/ 2. Socket .................... (D2) x2

Digital Output PWB)

5 Main PWB 1. Socket .................... (E1) x2 9-1

2. Flat Cable............... (E2) x1

3. Flat Wire................. (E3) x1

4. Tip Wire.................. (E4) x1

6 Power PWB 1. Screw ..................... (F1) x4 9-1

2. Socket .................... (F2) x4

3. Holder PWB ........... (F3) x5

7 Front Panel 1. Screw ..................... (G1) x2 9-1

8 Display PWB/ 1. Screw..................... (H1) x13 9-2

Switch PWB
Headphones PWB

9 Tape Mechanism 1. Open the cassette holder. 9-2

10 Turntable 1. Screw ..................... (K1) x1 9-3

11 Disc Tray 1. Screw ..................... (L1) x2 9-3

12 CD Servo PWB 1. Screw ..................... (M1) x1 9-4

(Note 2) 2. Socket .................... (M2) x4

13 CD Changer 1. Screw ..................... (N1) x4 9-5

Mechanism

14 CD Mechanism 1. Screw ..................... (P1) x1 9-5

2.

Support Bracket ..... (H2) x1

2. Screw...................... (J1) x6

3. Socket .................... (J2) x1

2. Cover ..................... (K2) x1

2. Guide ..................... (L2) x2

CD-PC671H/651H

(A1)x2
ø3x12mm

(B1)x2
ø3x10mm

Back Board

(B1)x4
ø3x10mm

(C3) x3

CD Player
Unit

Back Board

(C4) x1
ø3x10mm

(D2)x1

(D1)x5
ø3x10mm

(C2) x1

LOCK
LEVER

Figure 8-1

Pull

(D2)x1

Figure 8-2

Top Cabinet

Side Panel
(Left)

(B1)x2
ø3x8mm

CD Tray Cover

1

Main PWB

(D1)x3
ø3x10mm

(A1)x2
ø3x12mm

Hook
( C1) x3

(C2) x1

(C4) x1

1
2

Note 1:

How to open the changer manually. (Fig. 8-3)

1. Change, turn fully the lock lever in the arrow direction
through the hole on the loading chassis bottom in this state.
After that, push forward the CD player base.

Note 2:

1. After removing the connector for the optical pickup from the

connector, wrap the conductive aluminium foil around the
front end of connector to protect the optical pickup from
electrostatic damage.

Figure 8-3

– 8 –

CD-PC671H/651H

(F3)x5

1 1

Push

2

Pull

POWER
PWB

POWER PWB

(F1)x3
ø3x10mm

Switch PWB

(H1)x2
ø3x10mm

(E4)x1

(E1)x2

Push

(E2)x1

(F2)x2

Front Panel

(F2)x2

Main PWB

Figure 9-1

(J2)x1

(F1)x1
ø3x10mm

Front Panel

(E3)x1

Headphoens
PWB

( L1 ) x1
ø3 x10mm

( L2 ) x1

CD Player Unit

( K1 ) x1
ø3 x10mm

( K2 ) x1

Washer

Turntable

Disc Tray

( L1 ) x1
ø3 x10mm

( L2 ) x1

Figure 9-3

( M1 ) x1
ø3 x10mm

(H1)x10
ø3x10mm

(H1)x1
ø3x10mm

(J1)x6
ø3x10mm

Figure 9-2

(G1)x2
ø3x10mm

Display PWB

Headphones
PWB

Open

(H2)x1

Cassette
Holder

Tape Mechanism

( M2 ) x2

CD Servo PWB

( M2 ) x2

CD Player Unit

Figure 9-4

( N1 ) x4

ø3 x12mm
( P1 ) x1
ø2.6 x10mm

Shift Lever

CD Changer
Mechanism

CD Player Base

CD Mechanism

Be careful when installing the CD changer mechanism.
Install the CD changer mechanism on the CD player base after
the shift lever has been set in the highest position.

Figure 9-5

– 9 –

CD-PC671H/PC651H

CP-C671H

STEP REMOVAL

1 Front Speaker 1. Front Panel ............ (A2) x1 10-1

2. Tip .......................... (A4) x2

3. Screw ..................... (A3) x2

4. Screw ..................... (A5) x2

5. Screw ..................... (A5) x2

PROCEDURE

FIGURE

CP-C651H

STEP REMOVAL

1 Front Speaker 1. Net.......................... (A1) x1 10-1

2. Front Panel ............ (A2) x1

3. Screw ..................... (A3) x4

4. Tip .......................... (A4) x2

5. Screw ..................... (A5) x2

6. Tip .......................... (A6) x2

PROCEDURE

FIGURE

CP-C671H

Front Panel

(A1)x1

CP-C651H

Super

Tweeter

Front Panel

(A2)x1

(A3)x2
ø3x10mm

(A2)x2

(A4)x2
ø3x10mm

(A5)x4
ø4x14mm

Figure 10-1

Tweeter

Woofer

Screw Driver

(CD-PC671H Only)

STEP

CP-SW671H

REMOVAL PROCEDURE FIGURE

1 Sub woofer 1. Net.......................... (A1) x1 10-2

3. Screw ..................... (A3) x4

Note:

The rear speakers and center speaker can be easily
disassembled.
Therefore the disassembling method is not described.
For details refer to the disassembling drawing in the
Parts Guide.

(A1)x1

CP-SW671H

(A2)x4

ø4x12mm

(A1)x1

(A3)x4

ø4x12mm

Net

(A5)x2

ø3x10mm

(A6)x2

Figure 10-2

(CD-PC671H Only)

Woofer

Speaker

Box

(A4)x2

Screw Driver

– 10 –

Drive should be pried

Screw
driver

Direction of handle

away from Speaker Box.

Figure 10-3

REMOVING AND REINSTALLING THE MAIN PARTS

( B1 ) x2
ø2.6 x6mm

Shaft
( B2 ) x1

Stop Washer
( B3 ) x1

Gear
( B4 ) x1

CD Mechanism

Pickup

CD MECHANISM SECTION

Perform steps 1, 2, 3 and 10-14 of the disassembly method to
remove the CD mechanism.

CD-PC671H/651H

Loading Motor

How to remove the loading motor
(See Fig. 11-1)

1. Remove the screws (A1) x 2 pcs., to remove the loading
motor.

How to remove the pickup (See Fig. 11-2)

1. Remove the screws (B1) x 2 pcs., to remove the shaft (B2).

2. Remove the stop washer (B3) x 1 pc., to remove the gear
(B4).

3. Remove the pickup.

Note

After removing the connector for the optical pickup from the
connector, wrap the conductive aluminium foil around the
front end of connector to protect the optical pickup from
electrostatic damage.

Motor
PWB

( A1 ) x2
ø2.6 x5mm

Figure 11-1

MECHANISM SECTION

• Driving Force Check

Play: TW-2412 Tape 1: Over 80 g

• Torque Check

Play: TW-2111 30 to 60 g. cm 30 to 60 g.cm
Fast forward: TW-2231 — 60 to 120 g.cm
Rewind: TW-2231 — 60 to 120 g.cm

Torque Meter

Torque Meter

Specified Value

Tape 2: Over 80 g

Specified Value

Tape 1

ADJUSTMENT

Tape 2

– 11 –

Figure 11-2

• Tape Speed

Test Tape

Normal MTT-111 Variable 3,000 ± Speaker
speed Resistor in 30 Hz terminal

TAPE MECHANISM

Variable Resistor in motor

Adjusting

Point

motor. (Load
(MM1) resistance:

Figure 11-3

Specified

Value

MM 1
Motor

Instrument

Connection

8 ohms)

CD-PC671H/PC651H

TUNER SECTION

fL: Low-range frequency
fH: High-renge frequency

• AM IF/RF

Signal generator: 400 Hz, 30%, AM modulated

Test Stage Frequency

IF 450 kHz 1,620 kHz T351 *1
Band — 522 kHz (fL): T306 *2

Coverage 1.1 ± 0.1 V
Tracking 990 kHz 990 kHz (fH): T302 *1

*1. Input: Antenna, Output: TP302
*2. Input: Antenna, Output: TP301

Frequency

Display

Setting/

Adjusting

Parts

CNP303

VR351

T351

AM IF

FM MUTE
LEVEL

TP302

R357

Instrument

Connection

TUNER PWB

T306

AM BAND
COVERAGE

• FM
Notes:

1: Description of the "FM IF Adjustment" is not carried on this

Manual. It is because the IF coil in the FM front end section
has been best adjusted in the factory so that its further
adjustment is not needed at the field. When replacing the
FM front end assembly, no adjustment is needed either.

2: The parts in the FM front end section are prepared in a

complete unit, so you can't obtain each part individually

• FM Mute Level

Signal generator: 1 kHz, 40 kHz dev., FM modulated

Frequency

98.00 MHz 98.00 MHz VR351 Input: Antenna
(25 dBµV) Output: Speaker

Frequency

Display

Adjusting

Parts

Instrument

Connection

Terminal

TP301

R336

SO301
FM ANTENNA

FE301

TERMINAL

CNP301

T302

AM
TRACKING

AM LOOP
ANTENNA
TERMINAL

Figure 12 ADJUSTMENT POINTS

CD ERROR CODE DESCRIPTION

When a malfunction occurs during CD operation, an error
code will be displayed to identify the function in CD operation
which failed.

Error State Code
0001 Cannot detect pickup-in SW
0101 Tray close operation error
0105 Tray close operation error
0201 Tray open operation error
0203 Tray open operation error
0304 Disc skip operation error
0305 Disc skip operation error

0307 Disc skip operation error

– 12 –

TEST MODE

1 2 3

2

1

10ms

0.50 V
IC1 20 FE

10ms

0.50 V
IC1 7 TE

Enlarged
View

TRACKING
OFF-SET
ADJUST

• Setting the test mode

Any one of test mode can be set by pressing several keys as follows.
<CD> + < > + <POWER> TEST: CD operation test

• TEST mode

Function — CD test mode

Setting of TEST mode
Indication of CD TST mode (Fig. 13-1)
OPEN/CLOSE operation is manual operation.
The pickup can be moved by using the (

<MEMORY>
LASER ON

<MEMORY>
Tracking on the spot.
SERVO OFF PLAY

) or ( ) key.

<MEMORY>

Tracking on the spot.
SERVO ON PLAY

IL is not performed.

CD-PC671H/651H

<STOP>

STOP

<PLAY> key input

TOC. IL is performed, and the ordinary PLAY is performed.
If the following key is pressed during PLAY, it is possible
to specify directly any Track No.
<Disc Number 1> key: Track 4
<Disc Number 2> key: Track 9

Press <STOP> key.

Stop

<Disc Number 3> key: Track 15

Note:

Only in STOP state it is possible to slide the pickup with the ( ) or ( ) key.
VOL. --- Last memory

BAL. --- CENTER
R.GEQ. --- FLAT
X-BAS --- OFF

Canceling method - POWER OFF

Figure 13-1

CD SECTION

Since this CD system incorporates the following automatic adjustment function, when the pickup is replaced, it is not necessary
to readjust it.
Since this CD unit does not need adjustment, the combination of PWB and laser pickup unit is not restricted.

• Automatic adjustment item

1. Focus offset (Fig. 13-2)

2. Tracking offset (Fig. 13-3)

3. E/F balance (tracking error balance) (Fig. 13-4)

4. RF level AGC function (HF level: constant)

5. RF level automatic follow-up of the tracking gain

This automatic adjustment is performed each time a disc is changed. Therefore,
each disc is played back using the optimal settings.

0.1s

0.50 V
IC1 20 FE

FOCUS
OFF-SET
ADJUST

0.1s

0.50 V
IC1 7 TE

TRACKING
OFF-SET
ADJUST

1
2

Figure 13-2

200 ms
1V/diV
IC 1 15

200 ms
1V/diV
IC 1 7

TO

TE

TRACKING/
ERROR
BARANCE

1

ADJUST

2

Figure 13-4

– 13 –

Figure 13-3

CD-PC671H/PC651H

Yes

Yes

Comparing freg.

same or not?

Between current receiving

frequency and (already)

previously memorized

frequency.

Hold down the ASPM button for 3 more second.

No operate. After displayed “END”. Return to

previous station.

“ASPM” blinks in the display.

Begin to scan start 87.50 → 108.00 MHz

Preset CH memory full over?

SD (TUNE) DET out OK?

Yes

No

No

No

No

No

If count 1st OK?

Yes

If count 2nd OK?

Yes

RDS signal or not? PI—identify

Yes

Comparing PI cord

same or not?

between current receiving

PI and before PI which is

already memorized by

ASPM on this time.

Yes

Yes

No

Comparing freg.

same or not?

between current receiving

frequency and (already)

previouslymemorized

frequency.

No

Memorized to the lowest vacant

preset channel.

No

Memorized to the lowest vacant

preset channel.

Compare the field

strength of current receiving

signal.

Is receiving signal stronger than

signal which has same PI cord

and is already memorized to

preset memory ahead of this

receiving time?

No effect

No effect

No effect

Effect

Pass

No effect

Pass

No effect

Pass

No effect

Pass

No effect

Displayed the TTL quantity of memorized

stations by ASPM operation on this time.

And return to the previous

receiving freq. automatically.

Begin to ASPM SCAN from the next

CH-SPAN again.

Repeat and continue with same format

ASPM operation untill 108 MHz.

After reached 108 MHz, displayed the TTL

quantity of memorized stations.

And return to the previous receiving freq.

automatically.

Preset CH memory become full over?

Yes

No

ASPM, summary operation

– 14 –

CD-PC671H/651H

• ASPM SCAN: 87.50MHz → 108.00 MHz.

• Only RDS signal is memorized by ASPM because RDS signal has PI code and is suitable and convenient for ASPM operation.

ASPM
Comparing field strength, only one strongest RDS station is memorized of all stations (repeater relay stations) that have same

PI code.

Each PI has AF’S list by individually.

Same PI code — freq: different

(AF’S)
PS: same
PTY: same

[For example] Pickup and memorized to preset CH.

f 1
f 2 f 3

P 1 (PI code)
PS 1 (Station Name)

Select signals (f1, f5, f7, f10) are memorized in the preset memory by ASPM.

• If tentative - ASPM operation is repeated intentionally, never memorized (over write) at the same frequecy.
1st time ASPM → strongest stations of each PI are memorized.

ASPM is not only very usefull for PTY search, but also EON operation.
2nd time ASPM → 2nd strong stations of each PI are memorized and so on.
PTY search function is equal to FM band search function as a result.

f 5 f 4

P 2
PS 2

Exa: P1 has f1, f2, f3 (same PTY).
P2 has f4, f5 (same PTY).

---

f 6
f 7 f 8

P 3
PS 3

---

f 9 f 10
f 11 f 12 f13

P 4
PS 4

1. Introduction of RDS for CD-PC671H/651H

CD-C661H/661HR RDS function is equal to adding EON feature to the current CD-C75H RDS.
EON feature is EON—PTY and EON—TI.
Although PTY and TI indicators are separated, PTY contains TI in the PTY items (software) like current PTY search items.

NEWS, AFFAIRS, INFO, ALARM, TI (TTL 17 kinds)

↑

EON—PTY EON—TI

Can select and stand-by Can select and stand-by

EON—PTY and EON—TI are basically stand-by → receive the desired program of ON station.

2. The difference point from current CD-C75H RDS. (CD-C75H — CD-PC671H/651H)

1. PTY item: added TA. (TTL 18 kind.)

2. Each “TP”, “TA” ind. light up or go out individually.
“TA” ind. doesn’t light up on current model, CD-C75H due to none EON—TI.

3. Added 3 indicators(in FL) due to adding EON feature.
EON: Lights up only during receiving EON data (14A).
TI: During EON-TI stand-by → Light up

During receiving ON station. → blink.

PTY: During EON-PTY stand-by → Light up

During receiving ON station. → blink.

4. No adjust type (None adjusting circuit.)

5. Added EON button.

6. Need to change RDS logo due to the addition of EON feature.

7. Added EON—TI, EON—PTY function.

3. Summary of CD-PC671H/651H RDS—EON operation

EON—PTY: Select and set the desired “PTY” → stand-by → switch to ON (other network) Station at the start of desired PTY

automatically → stay and listen to PTY of ON station → switch bac k to TN (This net) station automatically at the end
of PTY (ON) i.e. after changing to another PTY (except AFFAIRS) or cancelling to receive PTY of ON station
midway.

EON—TI: Select and set the “TI” → stand-by → s witch to ON station at the start of traffic announcement automatically → stay

and listen to TA of ON station → switch back to TN station automatically at the end of TA (ON).
ie after TA (ON) is over or cancelled to receive TA of ON station midway.

When switching TN → ON station.
In case of exist 2 more stations having the desired (specified) “PTY” or “TI”, the receiver will select and switch to ON station
comparing field strength at the same time. But when the frequency of ON station exists in the preset-memory, then receiver
switches straight to that ON station (CH), without comparing field strength so can make a quic k s witching from TN—ON station.
Preset memory takes priority of switching TN—ON station.
Therefore ASPM is usefull not only for PTY search but also for rapid EON switching.
Anyway CD-C661H/661HR EON is basically stand-by and receiving method, along with the Guidelines for EON implementation.

↑

– 15 –

CD-PC671H/PC651H

RDS (Radio Data System) OPERATION

RDS is a broadcasting service which a growing number of FM stations are now providing. It allows these FM stations to

send additional signals along with their regular programme signals. For example, the stations send their station names, and

information about what type of programme they broadcast, such as sports or music, etc.

When tuned to an FM station which provide the RDS service, the RDS will appear, the station frequency (and then the

station name if sent) is displayed.

The TP (Traffic Programme) will appear on the display when the received broadcast carries traffic announcements, and the

TA (Traffic Announcement) will appear whilst a traffic announcement is being received.

EON will appear whilst the EON (Enhanced Other Networks information) data is being broadcast.

The PTYI (Dynamic PTY Indicator) will appear whilst the Dynamic PTY station is being received.

Note:

When the TP and TA appear at the same time, an announcement is being made.

When only the TA appears, an announcement is not being made. (See page 24.)

■

Information Provided by RDS

With the CD-PC671H, you can display three types of RDS ser-

vice. To show them in the display, press the DISPLAY MODE

button.

Each time you press the DISPLAY MODE button, the display will

change to show the following information.

PS (Programme Service):

Station names commonly

known will be displayed.

"NO PS" appears if no signal

is being received.

PTY (Programme Type): Programme type will be dis-

played.

"NO PTY" appears if no sig-

nal is being received.

RT (Radio Text): Radio text will be displayed.

"NO RT" appears if no signal

is being received.

Station Frequency: Station frequencies.

DISPLAY

MODE

(Continued)

Descriptions of the PTY (Programme Type) codes, TP (Traffic Programme) and TA (Traffic Announcement)

With the CD-PC671H, you can search for and receive the following PTY, TP and TA signals.

NEWS:

Short accounts of facts, events and

publicly expressed views, reportage

and actuality.

AFFAIRS:

Topical programme expanding or en-

larging upon the news, generally in dif-

ferent presentation style or concept,

including debate, or analysis.

INFO:

Programmes whose purpose is to im-

part advice in the widest sense.

SPORT:

Programme concerned with any aspect

of sport.

EDUCATE:

Programme intended primarily to edu-

cate, of which the formal element is

fundamental.

DRAMA:

All radio plays and serials.

CULTURE:

Programmes concerned with any as-

pect of national or regional culture, in-

cluding language, theatre, etc.

SCIENCE:

Programmes about the natural scien-

ces and technology.

VARIED:

Used for mainly speech-based pro-

grammes usually of light-entertainment

nature, not covered by other ca-

tegories. Examples include: quizzes.

panel games, personality interviews.

POP M:

Commercial music, which would gener-

ally be considered to be of current

popular appeal, often featuring in cur-

rent or recent record sales charts.

ROCK M:

Contemporary modern music, usually

written and performed by young musi-

cians.

EASY M:

Current contemporary music con-

sidered to be "easy-listening", as op-

posed to Pop, Rock or Classical, or one

of the specialized music styles, Jazz,

Folk or Country. Music in this category

is often but not always, vocal, and

usually of short duration.

LIGHT M:

Classical Musical for general, rather

than specialist appreciation. Examples

of music in this category are instrumen-

tal music, and vocal or choral works.

CLASSICS:

Performances of major orchestral

works, symphonies, chamber music

etc., and including Grand Opera.

OTHER M:

Musical styles not fitting into any of the

other categories. Particularly used for

specialist music of which Rhythm &

Blues and Reggae are examples.

WEATHER:

Weather reports and forecasts and Me-

teorological information.

FINANCE:

Stock Market reports, commerce, trading etc.

CHILDREN:

For programmes targeted at a young audience,

primarily for entertainment and interest, rather

than where the objective is to educate.

SOCIAL:

Programmes about people and things that in-

fluence them individually or in groups. Includes:

sociology, history, geography, psychology and

society.

RELIGION:

Any aspect of beliefs and faiths, involving a God

or Gods, the nature of existence and ethics.

PHONE IN:

Involving members of the public expressing their

views either by phone or at a public forum.

TRAVEL:

Features and programmes concerned with travel

to near and far destinations, package tours and

travel ideas and opportunities. Not for use for

Announcements about problems, delays, or

roadworks affecting immediate travel where

TP/TA should be used.

LEISURE:

Programmes concerned with recreational acti-

vities in which the listener might participate.

Examples include, Gardening, Fishing. Antique

collecting, Cooking, Food & Wine etc.

JAZZ:

Polyphonic, syncopated music characterised by

improvisation.

COUNTRY:

Songs which originate from, or continue the mu-

sical tradition of the American Southern States.

Characterised by a straightforward melody and

narrative story line.

NATION M:

Current Popular Music of the Nation or Region

in that country's language, as opposed to Inter-

national `Pop' which is usually US or UK inspired

and in English.

OLDIES:

Music from the so-called "golden age" of popular

music.

FOLK M:

Music which has its roots in the musical culture

of a particular nation, usually played on acoustic

instruments. The narrative or story may be

based on historical events or people.

DOCUMENT:

Programme concerned with factual matters,

presented in an investigative style.

TEST:

Broadcast when testing emergency broadcast

equipment or receivers.

ALARM !:

Emergency announcement made under excep-

tional circumstances to give warning of events

causing danger of a general nature.

NONE:

No programme type (receive only).

TP:

Broadcasts which carry traffic announcements.

TA:

Traffic announcements are being broadcast at

present.

Note:

● When the unit is in the EON stand-by mode and a programme

is selected, the unit will display "TI" instead of "TA".

18

– 16 –

CD-PC671H/651H

EXPLANATION OF DOLBY SURROUND PRO LOGIC AND EVALUATION METHOD

Outline

• Namely, two speakers are connected in parallel to one
amplifier.

• In the Pro Logic BYPASS mode the amplifier for C-ch (center

channel) and the amplifier for S-ch (surround channel) are in
MUTE state. The SP output is cut.

• State of element output and terminal output in specific mode

State of set Dolby Pro Logic Dolby Pro Logic On mode
Output point Bypass mode Normal mode Phantom mode

IC501 12 pin L-out Output enabled state Output enabled state Output enabled state

11 pin R-out Output enabled state Output enabled state Output enabled state
IC501 9pin C-out No output Output enabled state No output
IC501 10pin S-out No output Output enabled state Output enabled state
SP OUT L-ch Output enabled state Output enabled state Output enabled state
(SO901) R-ch Output enabled state Output enabled state Output enabled state
SP OUT C-ch No output in MUTE (Q404) state Output enabled state No output in MUTE (Q404) state
(SO901)
SP OUT S-ch No output in MUTE (Q403) state Output enabled state Output enabled state
(SO901)

Test tone output

• Pro Logic ON Normal mode
Press the remote control TEST TONE button.
→Output of only L-ch →Output of only C-ch

↑ ↓

Output of only S-ch ← Output of only R-ch
The test tone (noise) is repeatedly output for output period
(2 sec).
In this case the following indication appears repeatedly.
→TEST →L-ch →C-ch

↑ ↓

S-ch ← R-ch

• Pro Logic ON Phantom mode
Press the remote control TEST TONE button.
→Output of only L-ch →Output of only R-ch

↑ ↓

← Output of only S-ch
The test tone (noise) is repeatedly output for output period
(2 sec).

In this case the following indication appears repeatedly.
→TEST → L-ch → R-ch
↑ ↓
← S-ch←

Relation between VIDEO IN input and output in Pro Logic
ON state

(1) L-ch/R-ch same phase input into VIDEO IN input jack in

VIDEO Function mode

Output point Normal mode

SP out L-ch Almost no output (only omitting component)
(SO901) R-ch Almost no output (only omitting component)

(SO901) SP out C-ch
(SO901) SP out S-ch

Input signal is output.
Almost no output (only omitting component)

• In the normal mode of Pro Logic ON mode the amplifiers for
C-ch and S-ch are in operative state, so that the SP output
appears.

• In the Phantom mode of Pro Logic ON mode the amplifier for
C-ch is in MUTE state, so that the SP output is cut. The
amplifier for S-ch (surround) is in operative state, so that the
SP output appears

Output point Phantom mode

SP out L-ch Input signal is output.
(SO901) R-ch Input signal is output.

(SO901) SP out C-ch SP cut, no output
(SO901) SP out S-ch

Almost no output (only omitting component)

(2) L-ch/R-ch reverse phase input into VIDEO IN input jack in

VIDEO Function mode

(Reverse phase: Phase difference between L and R is 180°)

Output point Normal mode

SP out L-ch
(SO901) R-ch

(SO901) SP out C-ch
(SO901) SP out S-ch Input signal is output.

Output point Phantom mode

SP out L-ch
(SO901) R-ch

(SO901) SP out C-ch SP cut, no output
(SO901) SP out S-ch Input signal is output.

Almost no output (only omitting component)
Almost no output (only omitting component)

Almost no output (only omitting component)

Almost no output (only omitting component)
Almost no output (only omitting component)

• Accordingly, if you want to output signal waveform to C-ch SP

out, give the same phase input into L-ch/R-ch INPUT in the
Pro Logic Normal mode.

If one of channels receives input, C-ch does not output. Only

L-ch or R-ch outputs.

• If you want to output signal waveform to S-ch SP out, you can

use either Normal mode or Phantom mode. However, 180°
reverse phase input must be given to L-ch/R-ch INPUT.

– 17 –

CD-PC671H/PC651H

NOTES ON SCHEMATIC DIAGRAM

• Resistor:
To differentiate the units of resistors, such symbol as K and
M are used: the symbol K means 1000 ohm and the symbol
M means 1000 kohm and the resistor without any symbol is
ohm-type resistor. Besides, the one with “Fusible” is a fuse
type.

• Capacitor:
To indicate the unit of capacitor, a symbol P is used: this
symbol P means micro-micro-farad and the unit of the
capacitor without such a symbol is microfarad. As to
electrolytic capacitor, the expression “capacitance/withstand
voltage” is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene type

• Schematic diagram and Wiring Side of P.W.Board for this
model are subject to change for improvement without prior
notice.

• The indicated voltage in each section is the one measured
by Digital Multimeter between such a section and the chas­sis with no signal given.

1. In the tuner section,

( ) indicates AM
< > indicates FM stereo

2. In the main section, a tape is being played back.

3. In the deck section, a tape is being played back.

( ) indicates the record state.

4. In the power section, a tape is being played back.

5. In the CD section, the CD is stopped.

• Parts marked with “ ” ( ) are important for
maintaining the safety of the set. Be sure to replace these
parts with specified ones for maintaining the safety and
performance of the set.

REF. NO DESCRIPTION POSITION POSITION

SW1 OPEN/CLOSE ON—OFF
SW2 MECHA UP ON—OFF
SW3 DISC NUMBER ON—OFF
SW4 PICKUP IN ON—OFF
SW701 ON/STAND-BY ON—OFF
SW702 STATION ON—OFF
SW703 CLOCK ON—OFF
SW704 TIMER/SLEEP ON—OFF
SW705 DISC 1 ON—OFF
SW706 DISC 2 ON—OFF
SW707 DISC 3 ON—OFF
SW708 DISC SKIP ON—OFF
SW709 OPEN/CLOSE ON—OFF
SW710 REW ON—OFF
SW711 REC PAUSE ON—OFF
SW712 MEMORY/SET ON—OFF
SW713 STOP ON—OFF
SW714 TUNER/BAND ON—OFF
SW715 VIDEO ON—OFF
SW716 TAPE ON—OFF
SW717 CD ON—OFF

REF. NO DESCRIPTION

SW718 PTY/TI SEARCH ON—OFF
SW719 EON ON—OFF
SW720 ASPM ON—OFF
SW721 DISPLAY/MODE ON—OFF
SW722 FF ON—OFF
SW723 TUNING UP ON—OFF
SW724 TUNING DOWN ON—OFF
SW725 PLAY ON—OFF
SW726 VOLUME DOWN (PC651H ONLY) ON—OFF
SW727 VOLUME UP (PC651H ONLY) ON—OFF
SW728 X-BASS/DEMO ON—OFF
SW729 EQUALIZER ON—OFF
SW730 DIMMER ON—OFF
SW731 PHANTON ON—OFF
SW732 NORMAL ON—OFF
SW733 BYPASS ON—OFF
SWM 3 FOOL PROOF ON—OFF
SWM 4 F.A.S. ON—OFF
SWM 5 CAM ON—OFF
VR702 VOLUME GOG ON—OFF

FRONT

E C B
(S)(G)(D)
(1) (2) (3)

KRA102 M
KRC102 M
KRC104 M
KRC107 M
KTA1266 GR
KTA1271 Y

VIEW

KTA1273 Y
KTC3203 Y
KTC3199 GR
2SC2389 SE
2SC380 O
KTA1274 Y

FRONT

VIEW

B C E
(D)(G)(S)
(3) (2) (1)

2SA1318

1 2 3

SVC348S

Figure 18 TYPES OF TRANSISTOR AND LED

– 18 –

FRONT

VIEW

L1154GT4
SLI342YCB
SLI342DCB
SLI342UCB
SLI342YCJ
SLI3256YC
SLI342UCJ1

TO MAIN SECTION

(TO IC601)

SW2

MECHA UP

10

9

SW3

8

SW1

DISC No.

7

6

M3

LOADING

OPEN/CLOSE

M

5

2

3

4

SOLM1

1

CD-PC671H/651H

TO MAIN
SECTION

CNS10

+7.3V (B1)

CNP99

+5V

+5V

+B1

Q52

Q1

3

XL1

+5V

GND (D)

MECHA UP

GND (D)

DISK NO.

OPEN/CLOSE

GND (D)M–M+

10

2

1

BI1A

BI1B

43

XVDD

41

RVDD

36

LVDD

23

VDD
VVDD

6

44

45

64

62

2

4

1

3

2

1

2

1

37

31 38 39 40

LVSS

LCHO

LC78622NE

SERVO/SIGNAL

XOUT

XIN

VCC1

LD0

CONTROL

11

2

4 8

22

LA9241M

SERVO AMP.

5

6

CNP11

Q51

27

RVSS

RCHO

IC2

EFMO

EFMIN

CLV+

10 12 20

9

~

32 40 43 44

JP–

CV+

IC1

FIN2

FIN1EF

2

1

24 25

46
39

CONT2

CONT1

38
33
26

58

~

53
64

~

RES. CQCK. COIN

SQOUT. RWC. WRQ

62

JP–

CE

DAT

CL

DRF

SL+
SL–

SLD

NC

SPO

FD
TO

51

53
52
51

54
31
30

29
23
27
16
15

CL, DAT, SELIAL CONTROL/CE

~

SL1

SLC

3

4

7

9

8

SL+. SL–. DRF

25
20

7
2
1

23

6

6

+B1

M63001FP

TRACKING/

SPIN/SLED

5

3

4

+B5

18244020

IC3

FOCUS/

DRIVER

7

45

GND (M)

2

1

3839284142 37 36

16 26

15

CNP10

PU-IN SW

35
29

22
21
14

~~

8

27

Q81

REGULATOR

+4.3V

FOCUS COIL

TRACKING COIL

PICKUP UNIT

Figure 19 BLOCK DIAGRAM (1/3)

– 19 –

M1

SPINDLE

MOTOR

M

M2

SLED

MOTOR

M

PICKUP IN

SW4

CD-PC671H/651H

R

0

O

SO301

ANTENNA

TERMINAL

AM LOOP ANT

L341

BALUN

FE301

FM FRONT END

2867 3 4

AM RF

AM ANT

T302

SWM3

FOOL PROOF

FM IF

AMP

FM IF

1

CF301

5

VT

FM

OSC

FMOSC

AM OSC

T306

FM +B

Q360

VOLTAGE
REGULATOR

CF302

Q301

VR351

FM MUTE LEVEL

+B4

7

FM

FM IF

FM IF IN

4.5MHz

1

+B4

AM IF

T351

12 3 4589

REG INOUT VCC

IC303
LA1832

FM/AM IF MPX.

AM OSC

24

OUT

X352

OSC

21

23

22

IN

AFC

AM RF IN

INAM

2220

FM IN

15

IC302

LC72131

PLL (TUNER)

3 6

CE

STEREO

1116

GND

13

MONO/ST

FM MONO/ST

10

4

5

DI

CL

DO

FM IF

67

SD

+B4

CF351

IF

OUT

10

VOLTAGE
REGURATER

IF IN

1213

21

17 19

Q361
MPX

PHASE

+B4

17

SM

AMP.

QT21

X351

456kHz

18 16

20

FM/AM

MPX

OUT

IN

14

11

+5V

15

12

RL

MUTING

MPX
VCO
CUT

Q353
Q354

TUNER MUTE

SWM4
F.A.S

SOLM1

SOLENOID

SWM5

CAM

PC671H
ONLY

VOLUME

JOB

VR702

M

MM1

TAPE MOT

FROM CD SECTION
CNP11

TAPE 1

PB HEAD

TAPE 2

REC PB HEAD

L-CH

R-CH

L-CH
R-CH

REC

P.B

AC BIAS

CNS11

1
2
3

SWITCHING

Q103~Q106

23 222120 15 14

DI

CL

CE

DO

ICT21
LC72720

IN

RDS DECORDER

MPX

VSSA

VDDA

3

2

4

JK401

VIDEO IN

L
R
L
R

IC101

AN7345K

PLAYBACK AND RECORD

/PLAYBACK AMP.

L(T1)

1

24

R(T1)

L(T2)

R(T2)

L NF

R NF

POP REDUCE

L REC

R REC

REF

23

3
4

6

16
14
12

2

9

T1/T2
REC

NOR/
HIGH

15 19

P.B.

H/N

T1/T2

SWITCHING SWITCHING

Q107
Q108

Q111

VSSD

13

4

21

5

20

7

18

8

17
10

13

VDDD

12

L

R

L NF
R NF
ALC

XIN

XOUT

+B4

PB

L R REC

Q371

XT21

4.332MHz

VIDEO2
VIDEO1
TAPE
TUNER

CD

23 24 25

L
R
L

R
L
R
L
R
L
R

34

IC501

38

LV1035M

35

DOLBY PRO LOGIC

37

DECORD

36

CLDICE

51

61

52

60

LC75396N

53

59

AUDIO PROCESSOR

54

58

55
57

63

49

L

44

R

45

IC401

9

33

33 32

X501

48

56

Q121
Q122

MUTING

22

9

+B4

20
28

R

17
31

L

30
18

33

48

REC

ZD8

T1/T2

ERASE
HEAD

BIAS
OCS

Q109

SWITCHING

Q110

SWITCHING

Q128
L104

Figure 20 BLOCK DIAGRAM (2/3)

– 20 –

Q124

BAIS

Q126

BAIS

9

13

IC951
LA4551
POWE

M

MM1

TAPE MOTOR

Q702
Q703

~~~

15 2516

1 2 3

4

FL701

DISPLAY

26

CD-PC671H/651H

~

28

36

37 3839

29

Q705
Q706
Q707

ZD801

+B7

+B7

1

RX701

3

2

+B7

KEY
SW703~SW717
SW722~SW725
SW728~SW733

SW726,SW727
PC651H Only

PC671H
ONLY

Sub Woofer
Volume

VR701

Q401
Q402

+12V(ANALOG)

+B4

+12V(MOTOR)

+B5

+B2

Q403
Q404

VOLTAGE

REGULATOR

+5.6V

50
49
48
47
46

VDD

45
44
43
42
41
40
39
38
37
36
35
34

AVDD

33
32
31

IC901
STK40724
(PC671H)
STK40704
(PC651H)

IC806

535251

282930

PHM1

2

SYSTEM CONTROL

MICROCOMPUTER

+B5

IC650
IC651

KIA4558P

OPE AMP.

IC471

37

4

16
12

Q903Q405

D802

REGULATOR

13

IC804

VOLTAGE

2

REGULATOR

13

IC805

2

T500mA L250V

13

VOLTAGE

REGULATOR

IC701

IX0281AW

VDD

+B7

XL701

4.19MHz

Q601,Q602

Q603, Q604

Q904

18

IC901
POWER AMP.

+B

15

3

–B

2

1

VOLTAGE

D803~D806

F832

Q801

7170696867666564636261 80797877

737260595857565554

101112131415161718192021222324252627

8

9

Q704

9
8

20

D801

T3.15A L250V

D807
~D809

6

7

FRONT

L-OUT
R-OUT

F804

767574

4 3 2 1

5

Q908

81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99

100

VDD

IC601

3

NJM4560D
OPE AMP.

5

F802

T5A L250V

F803

T5A L250V

F805
T1.6A L250V

4

PT801

POWER

TRANSFORMER

UNSWITCH
+B7

MEMORY
BACK UP

TO CD
SECTION

Q905

+B5

1
7

+B1

M901

M

FAN MOTOR

JK970
HEADPHONES

F903
T3.15A L250V

RL901

Sub Woofer

Q907

PC671H ONLY

RL902

F902 T3.15A L250V

Front
Speaker

Center
Speaker

Rear
Speaker

SO901
Speaker Terminal

T.F

F901 T3.15A L250V

Q906

RL801

L801

LINE FILTER

AC POWER
SUPPLY CORD

AC 230V, 50Hz

9

13

IC951
LA4551
POWER AMP.

7

+B6

1
6

+B7

+5V

UNSWITCH

Q802

13

IC803

2

D811~D814

Figure 21 BLOCK DIAGRAM (3/3)

– 21 –

PT802

POWER

TRANSFORMER

CD-PC671H/651H

C

C

0

2

0

0

0
0

C
2

C

8

C

1

FROM TUNER PWB

A

CNS303

10

TUN_SM

TUN_R

TUN_L

P34 6-B
CNP303

A_12V

A_GND

TO CD SERVO PWB

P29 12-C

CNP11

TO DECK SECTION

P25 12-B

11 12 13 14 15 16 17 18 19 20 21

123456789

DI

CL

CE

DO

D_GND

T1/T2

BIAS

REC_MUTE

A_12V

D_GND

M_GND

REC_R

A_GND

REC_L

TAPE_L

TAPE_R

123456

123456

LCH

7.3V

RCH

A_GND

D_GND

+B

M_12V

CNS11
BI401

B

C

D

E

FFC701

TAPE BIAS

SUB_VOL_IN

SUB_VOL_OUT

CNP701

TO DISPLAY PWB

P26 1-E

CNP502

SPN_P

POWER

SR_MUTE

C MUTE
S_MUTE

T1/T2

REC/PLAY

H/PSW

TUN SM

D_GND

D_GND
SPEANA3
SPEANA2

SPEANA1

M_+12V

CLK

ENA

A_GND

+B

R516 1K
R523 1K
R517 1K

0.1(ML)

C501
(ML)

49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64

0.1

C543

C323

0.027

R501
100K

R502 100K

C509

0.1(ML)

C505 0.47/50

C504 47/25

C503 1/50

C502 1/50

LT_IN

RT_IN

L_BPF2

L_BPF1

DC_OUT3
R_RECT

DC_OUT4
L_RECT
VLR_TH
VLR_1
VLR_2
VCS_2
VCS_1
VCS_TH
L+R_RECT
DC_OUT2
L-R_RECT
DC_OUT1

DC_OUT

C_MODE

49

L_BPF3

LV1035M

DOLBY PRO LOGIC

DECORDER

64

R_BPF3

L_DC_OUT

R_DC_OUT

C_DC_OUT

S_DC_OUT

R_BPF1

R_BPF2

123456789

C534 0.1(ML)

C535 10/50

C536 10/50

C538 10/50

C537 10/50

R371

R518 1K

R519 1K

C507 0.047

C506 0.022

GND

NS_BPF1

IC501

VCC

VREF

C539

220/16

C544

220/16

C546

0.022

NS_BPF2

C_OUT

C322

0.027

C549 100P

C551 100P
R520 22K
C550 100P

C508 680P

CLK

OSC

DATA

DATA

ENABLE

DC_OUT
DC_OUT

L_IN

AC_GND

L_OUT

R_OUT

S_OUT

10 11 12 13 14 15 16

C540

10/50

C542
220/16

R511

1K

33343536373839404142434445464748

CLK

VSS

OSC
OSC
VDD

L_OUT

R_OUT

S_OUT

D_GND

IREF

DET

VCC

S_IN

R_IN

R510
18K

A/D

R503

32
31
30

C514 0.082(ML)

29

C515 0.0033(ML)

28

NS

C517 0.082(ML)

27

D/A

C519 0.47/50

26

C521 0.33/50

25

C523 10/50

24

C524 10/50

23

C527 10/50

22
21

R508 39K

20

C531 2.2/50

19
18
17

NC

X501

R504

1K

1M

C547 0.022

C541 220/16

R505 4.7K
R506 4.7K
R507 1K

R509 4.7K
R512 4.7K
C532 220/16
C563 0.022

+B

1

0.0

D515

1N4004S

D516

1N4004S

+B

C408 0.
C410 0.

C412 0.
C414 0.

C416 0.
C418 0.

C420

0.0047(ML
C422

1/50

0.

1

R372

1.5K

+B

1

2
3
4
5
6
7
8
9

10
11
12
13
14
15
16
17

R522 1K

18

CE

R521 1K

19

DI

DO

20

Q11

21
22
23
24
25

+B

+B

C510 0.47/50
C512 4.7/50
C511 0.47/50
C513 4.7/50
C516 0.15/50
C518 3.3/50
C520 0.15/50
C522 0.15/50
C525 3.3/50
C526 0.15/50
C528 4.7/50
C529 0.47/50
C530 4.7/50
C533 0.47/50

C545
220P

F

G

MAIN PWB-A1(1/2)

H

• NOTES ON SCHEMATIC DIAGRAM can be found on page 18.

1

23456

Figure 22 SCHEMATIC DIAGRAM (1/13)

– 22 –

R513

3.3K
R514

330

R515

3.3K

+B

+B

R443 22K

C436 22/25

0V

0V
2

3

4V

Q405

1

KRC104 M

R442 22K

C437 22/25

D402

DS1SS133

C438 22/25

B

NS11
I401

0.0047(ML)

R443 22K

DS1SS133
0V
2

V

Q405

1

KRC104 M

C444

1/50

C443

1/50

C404

0.082(ML)
C406

0.22/50

C408 0.018(ML)
C410 0.068(ML)

C412 0.22/50
C414 0.027(ML)

C416 0.015(ML)
C418 0.0022(ML)

C420

C422

1/50

C424
10/50

R442 22K

C437 22/25

C438 22/25

D402

R450

C448

2.2/50
R422

2.7K

C446

R420

100P

33K

C452 0.047(ML)

C450 0.047(ML)

C454 0.047(ML)

R410 1K

R412 1K

C402

0.047(ML)

1
2
3
4
5
6
7
8
9

10
11
12
13
14
15
16

2.2/50

R441 22K

D403

DS1SS133

R444
10K

CNP501

RF1C1
RF1C2
RF1C3
RF2C1
RF2C2
RF2C3
RF3C1
RF3C2
RF3C3
RF4C1
RF4C2
RF4C3
RF5
RTOUT
RFIN
RFCOM

C434

R436

22K

+B

+B

R446

R414 1K

R5

R4R3R2

RTIN

RINVIN1

LC75396N

AUDIO PROCESSOR

RVREF

RROUT

RRCOM

RRIN

RFOUT

17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

C428

0.047(ML)
C435 47/25

C426 10/50

C430

C432

2.2/50

R430 47K
R432 47K

R434 2.2K

Q402

KTC3199 GR

KTC3199 GR

0V

0V

330

0V

C440

C439

0.001

0.001

R440

2.2K

7.3V

+12V (M)

M_GND

CD_GND

(CD)

D_GND

+12V (A)

123456789

470

R449

C457 0.047(ML)

C458 0.047(ML)

C456 0.047(ML)

R418 1K

R416 1K

R417 1K

R1

VDD

IC401

CLDICE

VREF

R428 1K

R426 1K

R427 1K

47/25

R429 47K

R431 47K

Q401

0V

0V

R445

330

2.2K

R439

POWER

A_GND

SUB_WOOF

CENTER_OUT

10 11 12 13 14 15

470

C449 0.047(ML)

C453 0.047(ML)

C451 0.047(ML)

C455 0.047(ML)

R415 1K

R413 1K

R411 1K

R409 1K

L1L2L3

L4

LRCOM

COUT

VSS

LVREF

C425 10/50

C429

2.2/50

C431 47/25

R435
22K

Q404
KTC3199 GR

0.7V

R448

330

R438

2.2K

C442

REAR_OUT

FRONT_Rch

FRONT_Lch

A_GND

C447

2.2/50

R421

2.7K

R419
33K

100P

C445

+B

49505152535455565758596061626364

L5

48

LTIN

LSELO

LINVIN1

47

LF1C1
LF1C2

46

LF1C3

45

LF2C1

44

LF2C2

43

LF2C3

42

LF3C1

41

LF3C2

40

LF3C3

39

LF4C1

38

LF4C2

37

LF4C3

36

LF5

35

LTOUT

34
33

LFIN

LFCOM

LFOUT

CIN

R424
220K

C427 0.047(ML)

C433 2.2/50

C423 10/50

R425
220K

R433
10K

Q403

0V

KTC3199 GR

0V

0.7V

C441

0.001

0.001

2.2K

R437

–B

–15V

D401

DS1SS133

C460 0.022

C459 100/16

C401

0.047(ML)

C403 0.082(ML)

C405 0.22/50

C407 0.18(ML)

C409 0.068(ML)

C411 0.22/50

C413 0.027(ML)

C415 0.015(ML)
C417 0.0022(ML)

C419 0.0047(ML)

C421

1/50

220K

R423

330

R447

CD-PC671H/651H

FM SIGNAL
PLAYBACK SIGNAL

RECORD SIGNAL
CD SIGNAL

L-CH

JK401

22

R625

C623

0.001

1K

R621

C611

2.7K

10/50

C612

R626

OPE AMP.

10/50

22

1K

R622

0.001

C614

0.022

C613

220/16

2

1

3

5

4

6

C622

5

1

0.001

VIDEO_1

IN

R-CH

L-CH

VIDEO_2

IN

R-CH

HEADPHONES

C621

HEADPHONES PWB-A4

FW601

5
4
3
2
1

L101

100µM

CNP601

0.001

JK601

C620

0.0033

GND

H/P SW

GND

L

R

C608

0.0033

R620 27

R619 27

R403

C461
390P

R471
220K

R472
220K

C462
390P

C463
390P

C464
390P

C474

0.15

(ML)

R477

27K

R401

R402

R405

C475

R607

2.2K

C627

22/25

27K

27K

27K

R406

47/25

27K

+B

R484

100K

C471

0.047
(ML)

R476

27K

C476

(ML)

R478 6.8K

C478

0.082
(ML)

R623

22K

KTC3199 GR

C615

0.001
C616

0.001
R608

2.2K

R624

KTC3199 GR

22K

C651
270P

R651
10K

R652

R654

68K

R653

12K

D651 DS1SS133

R655

56K

R656
470K

R657

15K

100K

R473

0.15

+B

Q601

Q602

33K

C653

0.0027

C655

0.0068

C661 0.022
R661 270K

C662

0.022

C472
100P

R479
12K

C473
47/25

C477
100P

R480

1.5K
C479
10/50

R603

2.2K

R658
390K

C657
270P

C659

0.0027

C656

0.0068

R474

15K

R475

3.9K

0.001
C618

0.001
R604

2.2K

C617

R483
100K

2
3

5
6

R627

100

R605
22K

KTC3199 GR

R606

22K

IC650

KIA4558P

R662
220K

R664
220K

390K

R660

2.2M

R666

R668

2.2M

R659 560K

8

1

IC471

7

4

C480

47/25

C601

0.047

R601

(ML)

2.2K

R609
100K

Q603

Q604
KTC3199 GR

R602

C602

2.2K

0.047
(ML)

2
3

OPE AMP.

5
6

IC651

KIA4558P

2
3

OPE AMP.

5
6

R663 330
R670 330

PC671H ONLY

R481

KIA4558P

OPE AMP.

1K

C481

0.022

R613
100K

C607
47/25

C605
100P

R614 100K

R611
560
C603
47/25
C604
47/25
R612

100K

R610

560

C606
100P

4
1

8
7

4
1

8
7

C663

C482

2.2/50

R482
100K

2
3

5
6

D652

DS1SS133

C666

2.2/50
D653
DS1SS133

C665

2.2/50

D654

DS1SS133

C664

2.2/50

0.022

ZD651

DZ6R2BSC

+B

8

4

C465

0.001

R615
12K

C484

0.001

1

IC601

7

R618

C667

0.022

12K

SPEANA3

R617

NJM4560D

R616

R672
100K

SPEANA2
R665

100K

SPEANA1

R674
100K

1.8K

R404

1.8K

R407

1.8K

R408

1.8K

+B

+B

+B

+B
–B

CNP803

TO POWER PWB

P30 1-E, 32 1-E

7

8 9 10 11 12

Figure 23 SCHEMATIC DIAGRAM (2/13)

– 23 –

CD-PC671H/651H

R132

A

B

TAPE1

PLAYBACK HEAD

C

R-CH

L-CH

D

E

F

TAPE2

RECORD/

PLAYBACK HEAD

ERASE
HEAD

R-CH

L-CH

CNS101

1

2
3

CNS102
1
2
3
4
5
6
7

CNP101

TAPE1_R

1

A_GND

2

TAPE1_L

3

CNP102

M_GND

1

ERASE

2

TAPE2_R2

3

A_GND

4

TAPE2_R1

5

TAPE2_L1

6

TAPE2_L2

7

PLAYBACK SIGNAL
RECORD SIGNAL

C109

R114

C102

0.001

C101

0.001

C106
180P

C105
180P

0.047
R113

9.3V

9.3V

Q104

2SC2389 SE

0V

0V

Q106

2SC2389 SE

0V

0V

0V

Q103
2SC2389 SE

10K

10K

8.6V

Q109
KTA1266 GR

R104

0V

2.2K

0.7V

R106

3.3K

0.7V

0.7V

R105

3.3K

0.7V

R103

2.2K

R115

R110

R109

0V

0V

Q105

2SC2389 SE

0V

R107

Q110

KRC104 M

3.4V0V

2 3

1

4.7K

0V

1

0V

R112

R102

R101

3.4V

2 3

Q111
KRC104 M

10K

1K

1K

47K

R108

0V

C108

0V

0V

4.7K

4.7K

47K

0.001

Q108

KTC3199 GR

Q107

KTC3199 GR

R174

150(1/2W)

C153
100/16

R120

56

C118

0.033
R122
100K

C116
47/25

L102

R118

2.2µH

1K

C112
330P

C111
330P

R117

1K

IC101

AN7345K

L101

2.2µH

PLAYBACK AND

RECORD/

C107 0.001

PLAYBACK AMP.

R111

10K

R119

56

C120
560P

R124

3.9K

C114
330P

–

+

112K

HICH=T1

112K

+

–

C113
330P

C115
47/25

R121

R123

100K

3.9K

C117

0.033

4321

C119
560P

+B

R126

5.6K

C122
1/50

NC

2021222324

5

NC

C121
1/50

R125

5.6K

R131

G

H

MAIN PWB-A1(2/3)

• NOTES ON SCHEMATIC DIAGRAM can be found on page 18.

1

23456

Figure 24 SCHEMATIC DIAGRAM (3/13)

– 24 –