Sharp CD-PC671H User manual

– 1 –
CD-PC671H/651H
No. S5930CDPC671H
CD-PC671H
• In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
SERVICE MANUAL
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
SHARP CORPORATION
CD-PC671HminicomponentsystemconsistingofCD-PC671H(main
unit), CP-C671H (front speakers), CP-SW671H (sub woofer),
GBOXS0026AWM1 (center speaker) and GBOXS0027AWM1
(surround speakers).
Illustration: CD-PC671H CD-PC651H
CD-PC651HminicomponentsystemconsistingofCD-PC651H(main
unit),CP-C651H(frontspeakers),GBOXS0026AWM1(centerspeaker)
and GBOXS0027AWM1 (surround speakers).
CONTENTS Page
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)
DIFFERENCE BETWEEN CD-PC671H AND CD-PC651H
CD-PC671H CD-PC651H
Sub woofer
Illustration: CD-PC651H
• 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
Prefomers Protection Act 1956, the Preformers Protection Acts
1963 and 1972 and to any subsequent statutory enactments and
orders.

CD-PC671H/PC651H
– 2 –
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
forthismodelisspecifiedtobelowerthanClassIRequirements.
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
outerthanthelead-inposition,theLaserwilllightforseveral
seconds to detect a disc. Do not look into the Pickup Lens.
(2) The Laser Power Output of the Pickup inside the unit and
replacementservicepartshavealreadybeenadjustedprior
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 -Useofcontrolsoradjustments,orperformance
of procedures other than those specified herein may result
in hazardous radiation exposure.
IMPORTANT SERVICE NOTES (FOR U.K. ONLY)
Beforereturning the unit to the customer after completion of a
repairoradjustment it is necessary for thefollowingwithstand
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.
SHORT-CIRCUIT
AC POWER
SUPPLY CORD
CONNECT THE PROBE
TO GND OF CHASSIS
SCREW
PROBE
AC
UNIT
WITHSTANDING
VOLTAGE TESTER
+
-
OUT
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
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 KéYTTéJéN 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.
(For U.K.)
(Except for U.K.)

– 3 –
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
●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)
●Front speaker section
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
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
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
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
●Sub woofer section (CD-PC671H Only)
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")
Height; 300 mm (11-13/16")
Depth; 310 mm (12-3/8")
Wei
g
ht: 3.4 k
g
(
7.5 lbs.
)
Specifications for this model are subject to change without
prior notice.
SPECIFICATIONS
CD-PC671H/651H CP-C671H
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
CP-SW671H
GBOXS0026AWM1
GBOXS0027AWM1
CP-C651H

CD-PC671H/PC651H
– 4 –
NAMES OF PARTS
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
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
53. (TAPE 1) Cassette Compartment
54. (TAPE 2) Cassette Compartment
25 26
23 5
22
52
14
16
37
36
35
913
17 18 19
24
21
23
20
7
10
8
11
12
14
15
6
27 2829
50
45
46 47 48
30 31
40
44
43
42
39
38
41
3233 34
49 51
54
53

– 5 –
CD-PC671H/651H
■Center speaker
16. Full-Range Speaker
17. Speaker Wire
■Surround speaker
18. Full-Range Speaker
19. Speaker Wire
■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
11. Super Tweeter
12. Tweeter
13. Woofer
14. Bass Reflex Duct
15. Speaker Wire
CP-C671H
3
2
14
6789
5
1
2
3
45
■Front speakers
11. Tweeter
12. Woofer
13. Bass Reflex Duct
14. Speaker Wire
CP-C651H
1
2
34
GBOXS0026AWM1
6
7
9
8
GBOXS0027AWM1

CD-PC671H/PC651H
– 6 –
■Sub woofer (CD-PC671H Only)
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
●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
1
7
4
5
109
6
8
11 12
13
14
24
19
20 22 21
15
17
2
18 16
23
25
26
27
28
3
CP-SW671H
10
11
12

– 7 –
CD-PC671H/651H
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" → The 24-hour display will appear. (0:00 - 23:59) "AM 0:00" →The 12-hour 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/PC651H
– 8 –
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 nylonbands or wire holders wherethey need to
beremovedwhendisassemblingtheunit.Afterservicing
theunit, be sureto rearrange the leads wherethey were
before disassembling.
4. Take sufficient care on static electricity of integrated
circuits and other circuits when servicing.
Figure 8-2
Figure 8-3
CD-PC671H/651H
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
2. Support Bracket ..... (H2) x1
Headphones PWB
9 Tape Mechanism 1. Open the cassette holder. 9-2
2. Screw...................... (J1) x6
3. Socket .................... (J2) x1
10 Turntable 1. Screw ..................... (K1) x1 9-3
2. Cover ..................... (K2) x1
11 Disc Tray 1. Screw ..................... (L1) x2 9-3
2. Guide ..................... (L2) x2
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
STEP R EMOVAL PROCEDURE FIGURE
Note 1:
How to open the changer manually. (Fig. 8-3)
1. Change, turn fully the lock lever in the arrow direction
throughtheholeontheloadingchassisbottominthisstate.
After that, push forward the CD player base.
Note 2:
1.Afterremoving the connector fortheoptical pickup from the
connector, wrap the conductive aluminium foil around the
front end of connector to protect the optical pickup from
electrostatic damage.
Figure 8-1
LOCK
LEVER
(D1)x5
ø3x10mm
(D2)x1
(D2)x1
(D1)x3
ø3x10mm
Back Board
CD Tray Cover
Main PWB
CD Player
Unit
Hook
( C1) x3
(C2) x1
(C4) x1
ø3x10mm (C4) x1
(C3) x3
1
1
2
Pull
(C2) x1
CD-PC671H/651H
Top Cabinet
(A1)x2
ø3x12mm
(A1)x2
ø3x12mm
Side Panel
(Left)
(B1)x2
ø3x8mm
(B1)x2
ø3x10mm
(B1)x4
ø3x10mm
Back Board

– 9 –
CD-PC671H/651H
Figure 9-1
Figure 9-2
Figure 9-3
Be careful when installing the CD changer mechanism.
InstalltheCDchangermechanismontheCDplayerbaseafter
the shift lever has been set in the highest position.
Figure 9-4
Figure 9-5
( L1 ) x1
ø3 x10mm
( L1 ) x1
ø3 x10mm
( K1 ) x1
ø3 x10mm
Turntable
Disc Tray
( K2 ) x1
( L2 ) x1
( L2 ) x1
CD Player Unit
Washer
( M1 ) x1
ø3 x10mm
( M2 ) x2
( M2 ) x2 CD Player Unit
CD Servo PWB
( N1 ) x4
ø3 x12mm
( P1 ) x1
ø2.6 x10mm
CD Changer
Mechanism
CD Mechanism
Shift Lever
CD Player Base
Front Panel
Display PWB
(H2)x1
Switch PWB
Open
Cassette
Holder
Tape Mechanism
(H1)x2
ø3x10mm
(H1)x10
ø3x10mm
(H1)x1
ø3x10mm
(J1)x6
ø3x10mm (G1)x2
ø3x10mm
Headphones
PWB
(J2)x1
(F1)x3
ø3x10mm
(E1)x2
(E4)x1
(F3)x5
(E2)x1
Front Panel
(F2)x2
(F2)x2
(F1)x1
ø3x10mm
Push Push
1 1
2Pull
POWER
PWB
Main PWB
POWER PWB
(E3)x1
Headphoens
PWB

CD-PC671H/PC651H
– 10 –
CP-C651H
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
STEP REMOVAL PROCEDURE FIGURE CP-C651H
Figure 10-2
Figure 10-3
(A6)x2
(A5)x2
ø3x10mm
(A3)x4
ø4x12mm
(A4)x2
Front Panel
(A2)x1
Net
(A1)x1
Screw Driver
CP-C671H
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
STEP REMOVAL PROCEDURE FIGURE CP-C671H
(A4)x2
ø3x10mm
(A3)x2
ø3x10mm
Front Panel
(A1)x1
Screw Driver
Woofer
Tweeter
Super
Tweeter
(A5)x4
ø4x14mm
(A2)x2
Figure 10-1
CP-SW671H
CP-SW671H
1 Sub woofer 1. Net.......................... (A1) x1 10-2
3. Screw ..................... (A3) x4
STEP REMOVAL PROCEDURE FIGURE
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.
(A2)x4
ø4x12mm
Screw
driver
Drive should be pried
away from Speaker Box.
Direction of handle
Woofer Speaker
Box
(A1)x1
(CD-PC671H Only) (CD-PC671H Only)

– 11 –
CD-PC671H/651H
MECHANISM SECTION
•Driving Force Check
Torque Meter Specified Value
Play: TW-2412 Tape 1: Over 80 g
Tape 2: Over 80 g
•Torque Check
Torque Meter
Tape 2
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
Specified
Value
Adjusting
Point Instrument Connection
Test Tape
Normal MTT-111 Variable 3,000 ±Speaker
speed Resistor in 30 Hz terminal
motor. (Load
(MM1) resistance:
8 ohms)
ADJUSTMENT
Specified Value
Tape 1
•Tape Speed
How to remove the pickup (See Fig. 11-2)
1.Remove thescrews (B1)x 2pcs., toremove theshaft (B2).
2. Remove the stop washer (B3) x 1 pc., to remove the gear
(B4).
3. Remove the pickup.
Figure 11-2
REMOVING AND REINSTALLING THE MAIN PARTS
CD MECHANISM SECTION
Performsteps1, 2, 3and 10-14 ofthedisassembly method to
remove the CD mechanism.
How to remove the loading motor
(See Fig. 11-1)
1. Remove the screws (A1) x 2 pcs., to remove the loading
motor.
Figure 11-1
( B1 ) x2
ø2.6 x6mm
Shaft
( B2 ) x1
Stop Washer
( B3 ) x1
Gear
( B4 ) x1
CD Mechanism
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.
TAPE MECHANISM
MM 1
Motor
Variable Resistor in motor
( A1 ) x2
ø2.6 x5mm
Loading Motor
Motor
PWB
Figure 11-3

CD-PC671H/PC651H
– 12 –
• AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
*1. Input: Antenna, Output: TP302
*2. Input: Antenna, Output: TP301
TUNER SECTION
fL: Low-range frequency
fH: High-renge 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
Test Stage Frequency Frequency
Display Setting/
Adjusting
Parts
Instrument
Connection
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
• 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
Adjusting
Parts Instrument Connection
Frequency
Display
Frequency
• FM Mute Level
Signal generator: 1 kHz, 40 kHz dev., FM modulated
98.00 MHz 98.00 MHz VR351 Input: Antenna
(25 dBµV) Output: Speaker
Terminal
TP302
R357
T351 VR351
FM MUTE
LEVEL
R336 TP301
FE301
T306 T302
SO301
FM ANTENNA
TERMINAL
CNP301
AM LOOP
ANTENNA
TERMINAL
TUNER PWB
CNP303
AM IF
AM BAND
COVERAGE AM
TRACKING

– 13 –
CD-PC671H/651H
TEST MODE
Figure 13-2 Figure 13-3
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.
CD SECTION Figure 13-1
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
• 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 ( ) or ( ) key.
<MEMORY>
LASER ON
<PLAY> key input Press <STOP> key. Stop
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
<Disc Number 3> key: Track 15
<MEMORY>
Tracking on the spot.
SERVO OFF PLAY
<MEMORY>
Tracking on the spot.
SERVO ON PLAY STOP
Figure 13-4
IL is not performed.
<STOP>
1 2 3
2
0.1s
0.50 V
IC1 20 FE
0.1s
0.50 V
IC1 7 TE
1
FOCUS
OFF-SET
ADJUST
TRACKING
OFF-SET
ADJUST
2
1
10ms
0.50 V
IC1 20 FE
10ms
0.50 V
IC1 7 TE
Enlarged
View
TRACKING
OFF-SET
ADJUST
2
1
TO
TE
200 ms
1V/diV
IC 1 15
200 ms
1V/diV
IC 1 7
TRACKING/
ERROR
BARANCE
ADJUST

CD-PC671H/PC651H
– 14 –
ASPM, summary operation
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

– 15 –
CD-PC671H/651H
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 back toTN (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 →switch 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 quick switching fromTN—ON station.
Preset memory takes priority of switchingTN—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.
• 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.
Same PI code — freq: different
(AF’S)
PS: same
PTY: same
Each PI has AF’S list by individually.
Exa: P1 has f1, f2, f3(same PTY).
P2 has f4, f5(same PTY).
[For example] Pickup and memorized to preset CH.
f 1
f 2 f 3
P 1 (PI code)
PS 1 (Station Name)
f 5 f 4
P 2
PS 2
f 6
f 7 f 8
P 3
PS 3
f 9 f 10
f 11 f 12 f13
P 4
PS 4
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.
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.
---
---
↑↑

CD-PC671H/PC651H
– 16 –
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

– 17 –
CD-PC671H/651H
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)
SP out L-ch Almost no output (only omitting component)
(SO901) R-ch Almost no output (only omitting component)
(SO901) SP out C-ch Input signal is output.
(SO901) SP out S-ch Almost no output (only omitting component)
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)
EXPLANATION OF DOLBY SURROUND PRO LOGIC AND EVALUATION METHOD
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←
Outline
• Namely, two speakers are connected in parallel to one
amplifier.
•IntheProLogicBYPASSmodetheamplifierforC-ch(center
channel)andtheamplifierforS-ch(surroundchannel)arein
MUTE state. The SP output is cut.
• 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.
•InthePhantommodeof Pro Logic ON mode theamplifierfor
C-ch is in MUTE state, so that the SP output is cut. The
amplifierfor S-ch (surround) is in operative state,so that the
SP output appears
•State of element output and terminal output in specific mode
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
Output point Phantom mode
(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 Almost no output (only omitting component)
(SO901) R-ch Almost no output (only omitting component)
(SO901) SP out C-ch Almost no output (only omitting component)
(SO901) SP out S-ch Input signal is output.
Output point Phantom 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 SP cut, no output
(SO901) SP out S-ch Input signal is output.
•Accordingly,ifyouwanttooutputsignalwaveformtoC-chSP
out, give the same phase input into L-ch/R-ch INPUT in the
Pro Logic Normal mode.
Ifoneofchannelsreceivesinput,C-chdoesnotoutput. Only
L-ch or R-ch outputs.
•IfyouwanttooutputsignalwaveformtoS-chSPout,youcan
use either Normal mode or Phantom mode. However, 180°
reverse phase input must be given to L-ch/R-ch INPUT.

CD-PC671H/PC651H
– 18 –
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
•The indicated voltage in each section is the one measured
by Digital Multimeter between such a section and the chas-
sis 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.
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
electrolyticcapacitor,theexpression“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.
REF. NO DESCRIPTION POSITION POSITION
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
REF. NO DESCRIPTION
Figure 18 TYPES OF TRANSISTOR AND LED
SVC348S
KTA1273 Y
KTC3203 Y
KTC3199 GR
2SC2389 SE
2SC380 O
KTA1274 Y
KRA102 M
KRC102 M
KRC104 M
KRC107 M
KTA1266 GR
KTA1271 Y
FRONT
VIEW
E C B
(S)(G)(D)
(1) (2) (3)
2SA1318
FRONT
VIEW
B C E
(D)(G)(S)
(3) (2) (1)
1 2 3 L1154GT4
SLI342YCB
SLI342DCB
SLI342UCB
SLI342YCJ
SLI3256YC
SLI342UCJ1
VIEW
FRONT

– 19 –
CD-PC671H/651H
Figure 19 BLOCK DIAGRAM (1/3)
27
123418
67
18244020
45 15
23 16 26 27
7
2
25
20
29
21
22
35
14
3839284142 37 36
PU-IN SW
XL1
XIN
LD0
FIN2 JP–
CV+
SLC
SL1
FIN1 E F
TO
FD
SPO
NC
SLD
SL–
SL+
DRF
CL
DAT
CE
VCC1
6
+5V
PICKUP IN
SW4
FOCUS COIL
TRACKING COIL
M1
SPINDLE
MOTOR
M
M
M2
SLED
MOTOR
PICKUP UNIT
9
IC2
LC78622NE
SERVO/SIGNAL
CONTROL
+B1
IC3
M63001FP
FOCUS/
TRACKING/
SPIN/SLED
DRIVER
IC1
LA9241M
SERVO AMP.
RES. CQCK. COIN SQOUT. RWC. WRQ
~
~
~
CL, DAT, SELIAL CONTROL/CE
Q51
SL+. SL–. DRF
987654321
GND (D) MECHA UP GND (D) DISK NO. OPEN/CLOSE GND (D) M– M+ GND (M)
987654321
CNP10
M
+5V
+B1
62
64
45
36
23
43
37
31 38 39 40 24 25
10
12
21
3
321456
10
26
58
53
10 12 20
32 40 43 44
53
52
51
54
31
30
29
23
27
16
15
41
44
Q1
Q52
+4.3V
Q81
+7.3V (B1)
REGULATOR
TO MAIN SECTION
(TO IC601)
XOUT
EFMO EFMIN CLV+ JP–
CONT2 CONT1
LCHO
LVSS
RVSS
RCHO
VVDD
VDD
LVDD
RVDD
XVDD
SW1 OPEN/CLOSE
SW2 MECHA UP SW3 DISC No.
M3 LOADING
SOLM1
TO MAIN
SECTION
CNS10
+B5
~~
CNP11
BI1B
21
BI1A
CNP99
+5V
24 8
33
38
39
46
~
64
62
51
11
22

CD-PC671H/651H
– 20 –
Figure 20 BLOCK DIAGRAM (2/3)
IC951
LA4551
POWE
R
X501
VOLUME
JOB
VR702
VSSD
VDDD
XIN
XOUT
VSSA
VDDA
MPX
IN
DO
CL
DI
CE
XT21
4.332MHz
ICT21
LC72720
RDS DECORDER
X351 456kHz
FM IF CF351
+B4
+B4
+B4
+B4 SM
VOLTAGE
REGURATER
+5V
QT21
AMP.
FM +B
VT
T306
T302
L341
CF302
DO
CE CL
DI
CF301
FE301
FM FRONT END
Q360
MPX
VCO
CUT
RL
Q354
Q353
PHASE
Q361
MPX
MPX
IN
FM/AM
OUT
IF IN
IC303
LA1832
FM/AM IF MPX.
IF
OUT
SD
FM MONO/ST MONO/ST
AM RF IN
AFC
IN
OUT
VR351
FM MUTE LEVEL AM OSC
REG INOUT VCC
FM IF IN
12 3 4589
17 19 20 18 16
15
14
12
11
10
67
13
21
22
23
24
FM IF
AMP
Q301
FM IF
FM
X352
4.5MHz
OSC
STEREO
IC302
LC72131
PLL (TUNER)
INAM
FM IN
FMOSC
T351
AM IF
GND
OSC
FM
FM IF
BALUN
AM OSC
VOLTAGE
REGULATOR
AM ANT
AM RF
AM LOOP ANT
TUNER MUTE
MUTING
SO301
ANTENNA
TERMINAL
2
8
67 3 4
1
5
4
3 6
5
21
17
1213
10
1116
15
2220
7
1
4
23
23 22 21 20 15 14 13
12
Q371
PC671H
ONLY
1
24
2
23
3
4
4
21
5
20
6 7
17
8
9
16
10
14
12
13
18
H/N
T1/T2
R-CH
L-CH
L-CH
R-CH
P.B
REC
TAPE 2
TAPE 1
L NF
L(T1)
R(T1)
L(T2)
R(T2)
R NF
L
R
POP REDUCE
L REC
R REC
L
R REC
P.B.
REC
ALC
NOR/
HIGH T1/T2
REF L NF
R NF
PB HEAD
REC PB HEAD
SWITCHING
Q103~Q106
AC BIAS
IC101
AN7345K
PLAYBACK AND RECORD
/PLAYBACK AMP.
PB
ERASE
HEAD
SWITCHING BAIS
Q126
Q124
Q128
L104
Q111
Q110
Q109
Q107
Q108
SWITCHING SWITCHING
SWITCHING
+B4
1
2
3
CNS11
FROM CD SECTION
CNP11
SWM3
FOOL PROOF
SWM4
F.A.S
SOLM1
SOLENOID
SWM5
CAM
52
60
51
61
53
59
54
58
55
57 49
63 48 33
48
33
45
44
34
38
35
37
36
33 32
13
9
9
9
IC401
LC75396N
AUDIO PROCESSOR
L
L
R
R
L
R
L
R
L
R
L
R
L
L
R
R
TUNER
VIDEO1
L
R
VIDEO2
TAPE
CD
BAIS
T1/T2
REC
MUTING
Q121
Q122
+B4
17
31
30
18
22
20
28
ZD8
0
BIAS
OCS
15 19
23 24 25 56
JK401
VIDEO IN
M
MM1
TAPE MOT
O
IC501
LV1035M
DOLBY PRO LOGIC
DECORD
CL DI CE