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CD-C451H
SERVICE MANUAL
No. S6840CDC451H/
CD-C451H
CD-C451H mini component system consisting of CD-C451H mini component system and CP-C451H Speaker System. · In the interests of user-safety the set should be restored to its original condition and only parts identical to those specified be used.
Manufactured under license from Dolby Laboratories Licensing Corporation. DOLBY, the double-D symbol and "PRO LOGIC" are trademarks of Dolby Laboratories Licensing Corporation.
QSOUND and the QLogo are registered trademarks of QSound Labs, Inc. QSound is protected under US Patent Nos. 5,105,462 and 5,208,860 and foreign counterparts.
CONTENTS
Page
SAFETY PRECAUTION FOR SERVICE MANUAL .......................................................................................................... 2 IMPORTANT SERVICE NOTES (U.K. ONLY) ................................................................................................................. 2 SPECIFICATIONS ............................................................................................................................................................ 3 NAMES OF PARTS .......................................................................................................................................................... 4 OPERATION MANUAL ..................................................................................................................................................... 6 DISASSEMBLY ................................................................................................................................................................. 7 REMOVING AND REINSTALLING THE MAIN PARTS .................................................................................................. 10 ADJUSTMENT ................................................................................................................................................................ 11 NOTES ON SCHEMATIC DIAGRAM ............................................................................................................................. 18 TYPE OF TRANSISTOR AND LED ................................................................................................................................ 18 BLOCK DIAGRAM .......................................................................................................................................................... 19 SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD ............................................................................................ 22 WAVEFORMS OF CD CIRCUIT ..................................................................................................................................... 44 TROUBLESHOOTING (CD CHANGER CONTROL / CD SECTION) ............................................................................. 45 FUNCTION TABLE OF IC .............................................................................................................................................. 49 FL DISPLAY .................................................................................................................................................................... 59 REPLACEMENT PARTS LIST/EXPLODED VIEW PACKING OF METHOD (FOR U.K. ONLY)
SHARP CORPORATION
1
This document has been published to be used for after sales service only. The contents are subject to change without notice.
CD-C451H
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. Laser Diode Properties Material: GaAIAs Wavelength: 780 nm Emission Duration: continuous Laser Output: max. 0.6 mW
VAROITUS! LAITTEEN KÄYTTÄMINEN MUULLA KUIN TÄSSÄ KÄYTTÖOHJEESSA MAINITULLA TAVALLA SAATTAA ALTISTAA KÄYTTÄJÄN TURVALLISUUSLUOKAN 1 YLITTÄVÄLLE NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE. VARNING - OM APPARATEN ANVÄNDS PÅANNAT SÄTTÄN I DENNA BRUKSANVISNING SPECIFICERAS. KANANVÄNDAREN UTSÄTTAS FÖR OSYNLIG LASERSTRÅLNING, SOM ÖVERSKRIDER GRÄNSEN FÖR LASERKLASS 1.
(Except For U.K./Australia/New zealand)
LASER KLASSE 1 LUOKAN 1 LASERLAITE KLASS 1 LASERAPPARAT
(FOR U.K./Australia/New zealand)
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.
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 Withstanding Voltage Tester Test voltage Set time Set current(Cutoff current) Unit Judgment OK: The "GOOD" lamp lights. NG: The "NG" lamp lights and the buzzor sounds.
CHASSIS SCREW
WITHSTANDING VOLTAGE TESTER PROBE
+
AC OUT
set value 4,240 VPEAK 3,000 VRMS 6 secs 4 mA
SHORT-CIRCUIT AC POWER SUPPLY CORD
UNIT
CONNECT THE PROBE CONNECT THE PROBE TO GND TERMINAL OF TO GND TERMINAL CHASSIS SCREW OF PHONO TERMINAL
2
CD-C451H
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL.
SPECIFICATIONS
CD-C451H
General
Power source: Power consumption: Dimensions: Weight: AC 230-240 V, 50 Hz 81 W Width; 270 mm (10-5/8") Height; 303 mm (11-13/16") Depth; 350 mm (13-13/16") 6.6 kg (14.2 lbs.)
Tuner section
Frequency range: FM; 87.5 - 108 MHz MW; 522 - 1,620 kHz LW; 153 - 281 kHz
Cassette deck section
Type: Frequency response: Motor: Signal/noise ratio: Bias and erasure system: Tape speed: Wow and flutter: (Except FOR GERMANY) Wow and flutter: (FOR GERMANY) Heads: Compact cassette tape 50 - 14,000 Hz (Normal tape) DC motor with electronic governor ¥ 1 55 dB (TAPE 1, playback) 50 dB (TAPE 2, recording/playback) AC 4.76 cm/sec. (1-7/8 ips.) 0.15 % (WRMS) 0.2 % (DIN 45 511, playback) TAPE-1: Playback 1 TAPE-2: Record/playback ¥ 1 Erase ¥ 1
Amplifier section
Output power: (Except FOR GERMANY) MPO; 176 W (88 W + 88 W) (10 % T.H.D.) RMS; 80 W (40 W + 40 W) (10 % T.H.D.) PMPO; 352 W (total) MPO; 176 W (88 W + 88 W) (DIN 45 324) RMS; 80 W (40 W + 40 W) (DIN 45 324) Video/Auxiliary (audio signal) ¥ 2; 500 mV/47 kohms Speakers; 6 ohms Headphones; 16-50 ohms (recommended; 32 ohms) Pre-output; 500 mV/47 kohms
Output power: (FOR GERMANY)
Input terminals: Output terminals:
CP-C451H
Speaker section
3-way type [130 mm (5-1/8") woofer, 50 mm (2") tweeter and super tweeter] Maximum input power: 80 W Impedance: 6 ohms Dimensions: Width; 200 mm (7-7/8") Height; 300 mm (11-13/16") Depth; 253 mm (10") Weight: 2.7 kg (5.8 lbs.)/each Type:
Compact disc player section
Type: Signal readout: D/A converter: Frequency response: Dynamic range: 3-disc multi-play compact disc player Non-contact, 3-beam semiconductor laser pickup 1-bit D/A converter 20 - 20,000 Hz 90 dB (1 kHz)
Specifications for this model are subject to change without prior notice.
3
CD-C451H
NAMES OF PARTS
CD-C451H Front panel
11. 12. 13. 14. 15. 16. 17. 18. 19. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. 41. 42. 3 43. 3 44. 45. 46. 3 47. 48. 49. 3 50. 3 51. 52. 53.
Disc Tray Disc Number Selector Buttons Disc Skip Button Open/Close Button (CD) Play Indicator (CD) Repeat Indicator (CD) Pause Indicator (CD) Disc Number Indicators RDS Indicator EON Indicator Traffic Announcement Indicator Traffic Programme Indicator Traffic Information Indicator Programme Type Indicator Dolby Pro Logic Indicator Sleep Indicator FM Stereo Mode Indicator FM Stereo Indicator Extra Bass Indicator (CD/TUNER) Memory Indicator (TAPE 2) Direction Indicators (TAPE) Reverse Mode Indicator (TAPE) Record Indicator Timer Indicator Spectrum Analyzer/Volume Level/Balance Indicator Function Selector Buttons On/Stand-by Button Programme Type/Traffic Information Search Button EON Button Extra Bass Button Volume Up/Down Buttons ASPM Button Display Mode Selector Button Headphone Socket Dolby Pro Logic Button Virtual Surround Button QSOUND Button Clock Button Timer/Sleep Button (TAPE) Record Pause Button Equalizer Selector/Demo Mode Button (CD) Record Start Button (TAPE) Dubbing Start Button (TUNER) Beat Cancel Button (TAPE) Dubbing Start Button Tuning and Time Up/Down Buttons Memory/Set Button (CD) Track Down/Review Button (TUNER) Preset Down Button (TAPE 2) Reverse Play Button (CD/TAPE) Stop Button (TAPE 1) Play Button/(TAPE 2) Forward Play Button (CD) Play/Repeat Button (CD) Track Up/Cue Button (TUNER) Preset Up Button (TAPE 2) Reverse Mode Button (TAPE 1) Cassette Compartment (TAPE 2) Cassette Compartment
1
2
3 4
5 67
1
8
2 3
9 10 11 12
RDS TA EON PTY TP TI
13 14
17 18 19 20
15 16
PRO LOGIC
ST SLEEP
kHz X-BASS MHz MEMORY
REC
63 250 1k
4k 16k
21 22 23 24 25 26 27 28 29 30 31
32 33 34 35 38 39 40 36 37 41 42 43
44 45 46 47 48 49 50 51 52 53
4
CD-C451H
CD-C451H Rear panel
11. 12. 13. 14. 15. 16. 17.
AC Power Input Socket MW/LW Loop Aerial Input Socket FM 75 Ohms Aerial Socket Video/Auxiliary (Audio Signal) Input Sockets Surround Output Socket Centre Output Socket Speaker Terminals
2 3 4 5 1 6 7
Right speaker
CP-C451H Speaker section
11. 12. 13. 14. 15.
Super Tweeter Tweeter Woofer Bass Reflex Duct Speaker Wire
Left speaker
1 2 3 4
CD-C451H Remote control
11. 12. 13. 14. 15. 16. 17. 18. 19. 10.
Remote Control Transmitter LED Centre Level Buttons Dolby Pro Logic Button Virtual Surround Button QSOUND Button Test Tone Button Balance Control Buttons Surround Level Buttons
5
Tuner control section
Programme Type/Traffic Information Search Button Preset Up/Down Buttons
1 2 3 4 5 6 7 13 14 15 16 17 18 19 20 21 22 23 26 27 28 29 24 25 30 8 9 10 11 12
CD control section
11. 12. 13. 14. 15. 16. 17. 18. 19.
Disc Skip Button Play/Repeat Button Memory Button Clear Button Pause Button Track Down/Review Button Track Up/Cue Button Stop Button Random Button
Tape control section
20. 21. 22. 3 23. 24. 25. 26. 27. 28. 29. 30.
(TAPE (TAPE (TAPE (TAPE (TAPE (TAPE (TAPE
2) Reverse Play Button 1/2) Stop Button 1) Play Button 2) Forward Play Button 2) Record Pause Button 2) Rewind Button 2) Fast Forward Button
Common section
Equalizer Mode Button Function Selector Buttons On/Stand-by Button Extra Bass Buttons Volume Up/Down Buttons
5
SETTING THE CLOCK
PREPARTION FOR USE
(Main unit operation)
CD-C451H
In this example, the clock is set for the 24-hour (0:00) system.
ON/ STAND-BY
0.2 m - 6 m (8" - 20')
CLOCK
15
15
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
Notes concerning use: q Replace the batteries if the operating distance becomes reduced or if operation becomes erratic. q Periodically clean the transmitter LED on the remote control and the sensor on the main unit with a soft cloth. q Exposing the sensor on the main unit to strong light may interfere with operation. Change the lighting or the direction of the unit. q Keep the remote control away from moisture, excessive heat, shock, and vibrations.
TUNING/ TIME ( )
MEMORY/ SET
display mode. "0:00" The 24-hour display will appear. (0:00 - 23:59) "AM 12:00" The 12-hour display will appear. (AM or PM 12:00 - 11:59) "AM 0:00" The 12-hour display will appear. (AM or PM 0:00 - 11:59) Note that this can only be set when the unit is first installed or it has been reset.
2
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 automatically to "PM".
3
RESETTING THE MICROCOMPUTER
4
) button to adjust the
AM 12:00
minutes.
AM 0:00
0:00
7 Press the MEMORY/SET button. 8 Press the TUNING/TIME ( o r
1,2
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. Press the ON/STAND-BY button to enter the stand-by mode.
OPERATION MANUAL
6
5 9 Press the MEMORY/SET button.
The clock starts operating from "0" seconds. (Seconds are not displayed.)
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".
2 2
1 2
6
While pressing down the VOLUME button and the TUNING/TIME button, hold down the ON/STAND-BY button for at least 1 second.
7
Note: In the event of a power failure or when the AC power lead is disconnected, the clock display will go out. When the AC power supply is restored, the clock display will flash on and off to indicate the time when the power failure occurred or when the AC power lead was disconnected. If this happens, follow the procedure below to change the clock time.
Caution: The operation explained above will erase all data stored in memory including clock and timer settings, and tuner and CD presets.
8
To change the clock time:
When the unit is in the stand-by mode: Press the MEMORY/SET button. Perform steps 6 - 9 above. When the unit is on: Press the CLOCK button. Within 5 seconds, press the MEMORY/SET button. Perform steps 6 - 9 above.
9
To see the time display:
Press the CLOCK button. The time display will appear for about 5 seconds.
To change the time display mode:
Perform steps 1 - 2 in the section "RESETTING THE MICROCOMPUTER",. Perform steps 1 - 9 above.
CD-C451H
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 suffcient care on static electricity of integrated circuits and other circuits when servicing. CD-C451H
STEP 1 2 3 REMOVAL Top Cabinet Side Panel (Left/right) CD Player Unit/ CD Tray Cover PROCEDURE 1. Screw ..................... (A1) x4 1. Screw ..................... (B1) x6 1. Turn on the power supply, open the disc tray, take out the CD cover, and close. (Note 1) 2. Hook ...................... (C1) x3 3. Hook ...................... (C2) x2 4. Screw .................... (C3) x1 5. Socket ................... (C4) x2 1. Screw .................... (D1) x12 2. Socket ................... (D2) x1 1. Screw .................... (E1) x1 2. Socet ..................... (E2) x1 1. Screw .................... (F1) x1 2. Socket ................... (F2) x2 3. Flat Wire ................ (F3) x2 4. Tip Wire ................. (F4) x1 5. Socket ................... (F5) x1 1. Screw .................... (G1) x2 2. Hook ...................... (G2) x2 1. Screw .................... (H1) x12 FIGURE 7-1 7-1 7-2
CD-C451H
( A1 ) x2 ø3 x12mm Top Cabinet
( B1 ) x2 ø3 x8mm
( A1 ) x2 ø3 x12mm
Side Panel (Right) ( B1 ) x2 ø3 x8mm
Side Panel (Left)
Back Board
( B1 ) x2 ø3 x8mm
Figure 7-1
(C2) x1
CD Tray Cover 1
( C4 ) x2
8-1 8-1
Pull
Hook ( C1) x3
4 5 6
Back Board Tuner PWB Main PWB
A
8-2
1 2 ( C2 ) x1
CD Player Unit
Back Board
8-2 8-3 8-3 8-4
7 8 9 10
Front Panel Display PWB/ Switch PWB
Front Panel
Tape Mechanism 1. Open the cassette holder. 2. Screw .................... (J1) x5 Power Amp. PWB 1. Screw .................... (K1) x4 2. Socket ................... (K2) x2 3. Push Rivet ............ (K3) x4 CD Servo PWB Turntable CD Player Base CD Changer Mechanism CD Mechanism 1. Screw .................... (L1) x1 2. Cover .................... (L2) x4 1. Screw .................... (M1) x1 2. Cover .................... (M2) x1 1. Screw .................... (N1) x2 2. Guide .................... (N2) x2 1. Screw .................... (P1) x4 1. Screw .................... (Q1) x1
( C3 ) x1 ø3 x8mm
Main PWB
Figure 7-2
8-5 8-6 8-6 8-7 8-7
LOCK LEVER
11 12 13 14 15
Note 1: How to open the changer manually. (Fig.7-3) 1. Insert the tip of fine screwdriver into the hole of CD player base, and press down the worm wheel < A > . 2. Then, 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.
Figure 7-3 7
CD-C451H
Front Panel ( D1 ) x1 ø3 x10mm ( D2 ) x1 Tuner PWB
( L1 ) x1 ø3 x10mm CD Servo PWB
Main PWB Back Board ( E1 ) x1 ø3 x10mm ( E2 ) x1 ( D1 ) x9 ø3 x8mm ( D1 ) x2 ø3 x10mm
( L2 ) x2
( L2 ) x2 Loading chassis
Figure 8-5
Figure 8-1
( M1 ) x1 ø3 x10mm ( M2 ) x1 Washer Turntable
Push
( F3 ) x1 ( F4 ) x1 ( F2 ) x2 ( G2 ) x1 ( F3 ) x1 Power Amp. PWB
Front Panel
Push
Tape Mechanism ( G2 ) x1
( N1 ) x1 ø3 x10mm
CD Player Base
Main PWB
(F5) x1
( G1 ) x2 ø3 x8mm
( F1 ) x1 ø3 x10mm
( N2 ) x1 ( N1 ) x1 ø3 x10mm Loading chassis ( N2 ) x1
Figure 8-2
Switch PWB ( H1 ) x3 ø3 x10mm Front Panel
Figure 8-6
( H1 ) x9 ø3 x10mm Display PWB Open ( J1 ) x5 ø3 x10mm Tape Mechanism Cassette Holder (Left/Right)
( P1 ) x4 ø3 x12mm ( Q1 ) x1 ø2.6 x10mm Shift Lever CD Changer Mechanism
Figure 8-3
( K1 ) x4 ø3 x12mm ( K2 ) x1
Power Transformer ( K2 ) x1
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.
( K3 ) x4 Power Amp. PWB
Figure 8-7
Figure 8-4 8
CD-C451H
CP-C451H
STEP 1 REMOVAL Front Speaker PROCEDURE 1. Net .......................... 2. Fromt Panel ........... 3. Screw ..................... 4. Screw ..................... 5. Screw ..................... (A1) x1 (A2) x1 (A3) x2 (A4) x4 (A5) x2 FIGURE 9-1 9-2
CP-C451H
Tweeter Front Panel ( A2 ) x1 Net ( A1 ) x1
Woofer
Screwdriver
Figure 9-1
Super Tweeter ( A5 ) x2 ø3 x10mm Tweeter ( A3 ) x2 ø3 x10mm
( A4 ) x4 ø4 x14mm Woofer
Figure 9-2
9
CD-C451H
REMOVING AND REINSTALLING THE MAIN PARTS
CD MECHANISM SECTION
Perform steps 1, 2, 3, 14 and 15 of the disassembly method to remove the CD mechanism.
Turntable Up/Down Motor
How to remove the turntable up/down motor (See Fig. 10-1)
1. Remove the screws (A1) x 2 pcs., to remove the turntable up/down motor.
Ø ø2 Figure 10-1
( A1 ) x2 x5mm
How to remove the pickup (See Fig. 10-2)
1. Remove the screws (B1) x 2 pcs., to remove the shaft (B2) x 1 pc. 2. Remove the stop washer (B3) x 1 pc., to remove the gear (B4)x 1 pc. 3. Remove the pickup.
( B1 ) x2 Ø 2.6 x6mm
Stop Washer ( B3 ) x1 Pickup
Shaft ( B2 ) x1
CD Mechanism Gear ( B4 ) x1
Figure 10-2
10
CD-C451H
ADJUSTMENT
MECHANISM SECTION
· Driving Force Check
Torque Meter Play: TW-2412 Specified Value Tape 1: Over 80 g Tape 2: Over 80 g
TUNER SECTION
fL: Low-range frequency
fH: High-renge frequency · AM IF/RF Signal generator: 400 Hz, 30%, AM modulated
Test Stage Frequency Frequency Display 1,620 kHz 522 kHz 990 kHz 153 kHz 225 kHz Setting/ Instrument Adjusting Connection Parts T351 *1 (fL): T306 *2 1.1 ± 0.1 V (fL): T302 *1
· Torque Check
Torque Meter Specified Value Tape 1 Play: TW-2111 Fast forward: TW-2231 Rewind: TW-2231 30 to 60 g. cm -- --
IF Tape 2 30 to 100 g.cm 50 to 100 g.cm 50 to 100 g.cm MW Band Coverage MW Tracking LW Band Coverage LW Tracking
450 kHz -- 990 kHz -- 225 kHz
· Tape Speed
Test Tape Normal speed MTT-111 Adjusting Point VRM1 Specified Value 3,000 ± 30 Hz Instrument Connection Speaker terminal
(fL): T305 *2 1.5 ± 0.1 V (fL): T301 *1
TAPE SPEED VRM1
*1. Input: Antenna, Output: TP302 *2. Input: Antenna, Output: TP301 · 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 (25 dBµV) Frequency Display 98.00 MHz Adjusting Parts VR351 Instrument Connection Input: Antenna Output: Speaker Terminal
TAPE MECHANISM PWB
AM IF
FM MUTE LEVEL
TUNER PWB
TP301 SO301 ANTENNA TERMINAL
FE301 VR351 T351 T306
TP302 R357 T305 T302 T301 CNP301
MW BAND COVERAGE
LW BAND MW COVERAGE TRACKING
LW TRACKING
Figure 11 ADJUSTMENT POINTS 11
CD-C451H TEST MODE
· Setting the test mode Any one of test mode can be set by pressing several keys as follows. + + TEST: CD operation test · TEST mode Function -- CD test mode Setting of TEST mode Indication of CD TST mode (Fig.12-1) OPEN/CLOSE operation is manual operation. The pickup can be moved by using the ( LASER ON Tracking on the spot. SERVO OFF PLAY ) or ( ) key. Tracking on the spot. SERVO ON PLAY STOP IL is not performed.
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. key: Track 4 key: Track 9 key: Track 15 ) or ( ) key.
Press key.
Stop
Note: Only in STOP state it is possible to slide the pickup with the ( VOL. --- Last memory BAL. --- CENTER R.GEQ. --- FLAT X-BAS --- OFF Canceling method - POWER OFF
Figure 12-1
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.12-2) 2. Tracking offset (Fig.12-3) 3. E/F balance (tracking error balance) (Fig.12-4) 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
10ms 0.50 V IC1 7 TE 10ms 0.50 V IC1 20 FE Enlarged View
TRACKING OFF-SET 1 ADJUST 2
TRACKING OFF-SET 1 ADJUST 2
Figure 12-2
200 ms 1V/diV IC 1 15 TO TRACKING/ ERROR BARANCE 1 ADJUST
Figure 12-3
200 ms 1V/diV IC 1 7 TE
2
Figure 12-4 12
CD-C451H
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. · 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
· State of element output and terminal output in specific mode State of set Output point IC501 12 pin L-out 11 pin R-out IC501 9 pin C-out IC501 10 pin S-out SP OUT L-ch (SO901) R-ch SP OUT C-ch (SO901) SP OUT S-ch (SO901) Dolby Pro Logic Bypass mode Output enabled state Output enabled state No output No output Output enabled state Output enabled state No output in MUTE (Q604) state No output in MUTE (Q603) state Dolby Pro Logic On mode Normal mode Output enabled state Output enabled state Output enabled state Output enabled state Output enabled state Output enabled state Output enabled state Output enabled state
Phantom mode Output enabled state Output enabled state No output Output enabled state Output enabled state Output enabled state No output in MUTE (Q604) state Output enabled state
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 SP out (SO901) L-ch R-ch Normal mode Almost no output (only omitting component) Almost no output (only omitting component)
Output point SP out (SO901) L-ch R-ch
Phantom mode Input signal is output. Input signal is output. SP cut, no output Almost no output (only omitting component)
(SO901) SP out C-ch (SO901) SP out S-ch
(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 SP out (SO901) L-ch R-ch Normal mode Almost no output (only omitting component) Almost no output (only omitting component) Input signal is output. Phantom mode Almost no output (only omitting component) Almost no output (only omitting component) SP cut, no output Input signal is output.
(SO901) SP out C-ch Almost no output (only omitting component) (SO901) SP out S-ch Output point SP out (SO901) L-ch R-ch
(SO901) SP out C-ch (SO901) SP out S-ch
· 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.
(SO901) SP out C-ch Input signal is output. (SO901) SP out S-ch Almost no output (only omitting component)
13
CD-C451H
RDS (Radio Data System) OPERATION
DISPLAY MODE
Receiving FM Stations with RDS (Radio Data System)
RDS is a broadcasting service which a growing number of FM stations are now providing. It allows these FM stqtions 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 annoucements, and the TA (Traffic Annoucement) will appear whilst a traffic announcement is being received. EON will appear whilst the EON (Enhanced Other Networks information) data is being broadcast. 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 17.)
Descriptions of the PTY (Programme Type) codes, TP (Traffic Programme) and TA (Traffic Announcement) Eith the CD-C451H, you can search for and receive the forrowing PTY, TP and TA signals.
NEWS: AFFAIRS: INFO: EDUCATE: DRAMA: CULTURE: SCIENCE: VARIED: POP M: ROCK M: M.O.R. M: LIGHT M: CLASSICS: OTHER M: ALARM: NONE: TP: TA:
Information Provided by RDS
With the CD-C451H, you can display two types of RDS service. 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 diaplayed. "NO PS" appears if no signal is being sent. Programme type will be diplayed. "NO PTY" appears if no signal is being sent. Station frequencies.
News Topical programme expanding on the current news or affairs Programmes on medical service, weather forecast, etc. Educational programmes Radio plays Programmes on national or regional culture. Programmes on national sciences and technology. Other programmes like comedies or ceremonies Pop music Rock music Middle-of-the-road music (usually called "easy listening") Light music Classics Other music Emergency broadcasts no Programme type (receive only) Broadcasts which carry traffic announcements 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 "TP" or "TA".
PTY (Progamme Type):
Station Frequency:
14
ASPM, summary operation
Hold down the ASPM button for 3 more second.
"ASPM" blinks in the display.
Preset CH memory full over?
Yes No operate. After displayed "END". Return to previous station.
Displayed the TTL quantity of memorized stations by ASPM operation on this time. And return to the previous receiving freq. automatically. Yes Preset CH memory become full over? No
No
Begin to scan start 87.50 108.00 MHz No Pass No effect
SD (TUNE) DET out OK?
Yes No Pass No effect
Begin to ASPM SCAN from the next CH-SPAN again.
If count 1st OK?
Yes No Pass No effect
15 No Pass No effect No No Comparing freg. same or not? between current receiving frequency and (already) previously memorized frequency. Yes No effect No No effect Yes No Comparing freg. same or not? Between current receiving frequency and (already) previously memorized frequency. Yes
If count 2nd OK?
Yes
RDS signal or not? PI--identify
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.
Yes
Effect Memorized to the lowest vacant preset channel.
Comparing PI cord same or not? between current receiving PI and before PI which is already memorized by ASPM on this time.
Yes
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?
Memorized to the lowest vacant preset channel. No effect
CD-C451H
CD-C451H
· 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. Exa: P1 has f1, f2, f3 (same PTY). Same PI code -- freq: different P2 has f4, f5 (same PTY). (AF'S) PS: same PTY: same [For example] Pickup and memorized to preset CH. --f1 f2 ---
f3
f5 P2 PS 2
f4 f7
f6 f8 P3 PS 3
P 1 (PI cord) PS 1 (Station Name)
f9 f 10 f 11 f 12 f13 P4 PS 4
Select signals (f1, f5, f7, f10) are memorized in the preset memory by ASPM. · If tentative - ASPM operation is repeated intententionally, 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-C451H CD-C451H 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-C451H) 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 stanb-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 add EON feature. 7. Added EON--TI, EON--PTY function. 3. Summary of CD-C451H 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 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 switch to ON station at the start of traffic announcement automati cally stay and listen to TA of ON station switch back to TN station autmatically 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 toON station comparing field strength at the same time. But when the frequency of ON station exists in the preset-memory, then reciver switches straight to that ON station(CH), without comparing field strength so can make a quick switching from TN--ON sta tion. 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-C451H EON is basically stand-by and receiving method, along with the Guidelines for EON implementation.
16
CD-C451H
EON summary notice for reference 1. EON-TI/PTY EON stand-by can be set, only when EON ind. lights up. While EON ind. goes out (NO EON STATION), EON stand-by can't be set. If the EON button is pressed, then "NO EON" is indication the display. Even if switch back ONTN station continue to keep EON stand-by. Don't switch TNON during TN broadcast TA. (same item) EON can be cancelled during receiving ON station by pressing EON button if necessary and switch back ONTN. EON stand-by is perfectly cancelled (cleared) by pressing EON button 2 times during stand-by or powerOFF or Tun Up/Down or change band or recall pre-set CH. After setting EON stand-by, stand-by items can be confirmed by pressing EON button one time. EON button function: ·EON setting ·Confirm stand-by items ·Cancel (ONTN) ·EON clear cancel (2 times) After setting EON-TI and EON-PTY stand-by, if when EON data is not transmitted, EON ind goes out and EON stand-by is automatically cancelled display "NO EON". EON-TI stand-by can't be set. When TP=0,TA=0(TN) even if EON ind. lights up and the EON button is pressed then "NO TI" is indication the display. Don't switch TNON during TN broadcast same specified PTY. (same item of PTY) Switch TNON TN station one cycle. Never switch TNON1ON2 Other net to other net station. After switch TNON station. When ON station is NO RDS, NO signal, TA=OFF or different PTY items. The receiver switch back ONTN displaying "NO READY". During receive ON station. when ON station become to be NO RDS, NO signal, TA=ON to OFF or different PTY item, The receiver switch back ONTN. Switch TNON in case of 2 more stations exist, comparing field strength and switch to the strongest station, if these signals are same strength, switch to the first previous station. If same frequency as AF'Sexists in the preset memory, then switch TNON (preset memory station) straight. In case of exist 2 more preset memories of AF'S,then switch to the preset CH which taken in EON DATA first, also in this case no concern to field strength. Even if switch TNON preset memory straight, that ON station is very weak signal, then search another AF'S (ON) station comparing field strength and switch to the strongest station as a result. Of all atations of AF'S are very weak or no good condition, then, switch back ONTN automatically display "NO READY". No linkage volume, power ON/OFF, and switch function.
2. EON-TI/PTY 3. EON-TI 4. EON-TI/PTY 5. EON-TI/PTY 6. EON-TI/PTY 7. EON-TI/PTY
8. EON-TI/PTY 9. EON-TI 10. EON-PTY 11. EON-TI/PTY 12. EON-TI/PTY 13. 14. EON-TI/PTY
15.
16. EON-TI/PTY
Traffic Programme code Traffic Announcement code (TP) (TA) OFF OFF ON OFF ON OFF
Applications This programme does notcarry traffic announcements nor does it refer, via EON, to a programme that does. This programmecarries EON information about another programme which gives traffic information. This programme carries traffic announcements but none are being broadcast at present and may also carry EON information about other traffic announcements. A traffic announcement is being broadcast on this programme at present.
ON
ON
17
CD-C451H
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.
REF. NO SW1 SW2 SW3 SW4 SW701 SW702 SW703 SW704 SW705 SW706 SW707 SW708 SW709 SW710 SW711 SW712 SW713 SW714 SW715 SW716 SW718 SW719 SW721 DESCRIPTION OPEN/CLOSE MECHA UP DISC NUMBER PICKUP IN ON/STAND-BY CLOCK TIMER/SLEEP DISC 1 DISC 2 DISC 3 DISC SKIP OPEN/CLOSE CD TUNER/BAND TAPE VIDEO/AUX EON PTY. /TI SEARCH ASPM DISPLAY MODE CENTER MODE/PHANTOM CENTER MODE/NORMAL DOLBY PRO LOGIC BYPASS POSITION ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF
· 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 SW723 SW724 SW725 SW726 SW728 SW729 SW730 SW731 SW732 SW733 SW734 SW736 SW737 SW738 SW739 SW740 SWM 3 SWM 4 SWM 5 SWM 6
DESCRIPTION REC PAUSE TUNING UP/TIME VOLUME UP X-BASS STOP FWD FF/PRESET UP MEMORY SET TUNING DOWN/TIME VOLUME DOWN EQUALIZER/DEMO REVERSE MODE REV REW/PRESET DOWN CD/TAPE1 EDIT BEAT CANCEL (TAPE1 EDIT) REC FWD REC RVS F.A.S. CAM
POSITION ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF ON--OFF
FRONT VIEW
E C B (1)(2)(3)
2SC2236 Y 2SC2878 A KRC102 M KRC104 M KRC107 M KTA1266 GR KTA1268 GR KTA1271 Y KTC3199 GR KTC3203 Y
FRONT VIEW
2SC1845 F 2SD2012 2SD468 C KRA107 M KTA1273 Y
FRONT VIEW
FRONT VIEW
B C E (3)(2)(1)
KV1236Z23F
333GTH2
Figure 18 TYPES OF TRANSISTOR AND LED 18
PICKUP UNIT +5V
CNP99
+5V XL1 +5V
Q1
6 3 2 5 5 1
62 64 44 45 23 36 41 43 31
6
VVDD VDD LVDD RVDD XVDD
CNP11
LD0 LCHO 37
VCC1
XIN XOUT
IC1 LA9241M
JP 32
1 6 2 5 3 5
Q51
TO MAIN SECTION
( TO IC601 )
FOCUS COIL
~
SERVO AMP.
8 9 1
CV+ 40 SLC 43 SL1 44
IC2 LVSS 38 RVSS 39 LC78622K RCHO 40 9 EFMO SERVO/SIGNAL 27 10 EFMIN 12 CLV+ CONTROL
~
20 JP
1 2 3 4
FIN2 FIN1 E F CONT1 24 RES. CQCK. COIN SQOUT. RWC. WRQ
53 ~ 58 26
TRACKING COIL
6 5 3 7
+B1
TO FD SPO NC SLD
SL SL+ DRF
15 16 27 23 29
30 31 54
51 52 53
CL DAT CE
CONT2 25
IC81 TA7291S LORDING MOTOR DRIVER
CL, DAT, SELIAL CONTROL/CE Q93
Figure 19 BLOCK DIAGRAM (1/3)
SL+. SL. DRF
19
5
22 32 20
M2 SLED MOTOR
M1 DISC MOTOR
10 GND (D)
10
SW2 MECHA UP SW3 DISC No. SW1 OPEN/CLOSE
M
6 7
+B1
12 13
M
IC3 M56748FP DRIVER
8 9
10 11
MECHA UP GND (D) DISK NO. OPEN/CLOSE GND (D) M M+ GND (M) Q91
M
CNP10 CNP12 CNS10
M3 LOADING SOLM2
24 25 30 31
26 27 28 29 34 35 36
9 8 7 6 5 4 3 2 1
9 8 7 6 5 4 3 2 1
PICKUP IN SW4 PU-IN SW
TO MAIN SECTION
6
+5V Q52 REGULATOR +7.3V +12V (+B5)
5
CNP11
+7.3V (+B1)
CD-C451H
CD-C451H
SO301 ANTENNA TERMINAL 8 SM FM IF FM IF AMP Q301 +B4 FM IF
+B4
CF351
X351
AMP. QT21 L354 LOW PASS FILTER
16 41 40
FL701
37
FM FRONT END FE301
2 6 7 3
FM OSC.
1 5 4
VT
CF301
CF302 FM IF IN 1
AM IF T351 2 OUT 3 REG 4 8 5 IN GND
~
8 6 5
MW/AM ANTENNA
9 VCC
17
29
20
18
VR351 FM MUTE LEVEL
24
IC303 LA1832
AM OSC
23 22 21
FM/AM OUT
MPX IN
VF2 (AC)
VP
FM IF DET/FM MPX/AM IF
IF OUT 7
STEREO
13
6
SD
10
11
12
14 15
MONO/ST
L MPX PHASE Q361 MPX VCO CUT
R MUTING Q353 Q354 TUNER MUTE
OUT
L341 BALUN AM RF MW/LW ANT. T301 T302 MW/LW OSC. T305 T306
FMOSC
AFC IN
AM RF IN
SD
XT21
VOLTAGE REGURATER +B4
FM MONO/ST
+B2
IF IN
X352 4.5MHz
FM +B
AM IN
FM IN
20
1 OSC.
22
15
16
11
10
13
12
17
Q360
FM
7
IC302 LC72131 PLL(TUNER)
3 4 5 6
CE
21
7
BEAT CUT BIAS T1/T2 PB MUTE REC RVS REC FWD TA MOT SW SOLENOID TA MOT H/L CAM SW RUN PULSE F.A.S REC/PB
76 75 72 70 69 68 67 51 50 49 31 23 22
CL DO
IC201 IX0222AW MICROCOMPUTER
DI
X OUT X IN
2
47 43 42 41 45 39 38 37 61
ICT21 LC72720 RDS
XT21 4.332MHz
4CH SP
23
CE
22
DI
21
CL
20
DO
15 14
VDDD VSSD
13
BALANCE
65
VDDA
VSSA
MPX IN
~
57
66
64
2
4
3
12
CLK DATA ENEBLE
CL DI CE
+B4
CNS11
23 24 25 56 14 34
FROM CD UNIT CNP11 +B5 MM1 TAPE MOTOR MOTOR DRIVER QM02
1 2 3
TA MOT SW SWITCHING
M
REC FWD SWM3 REC RVS SWM4 CAM SW SWM6 FAS SW SWM5 PHM1
DRIVER
QM05
TA MOT H/L REC FWD REC RVS CAM SW F.A.S L
L 55 R 57 TAPE L 53 R 59 TUNER L 54 R 58 AUX L 52 R 60 AUX L 51 R 61
CD
VDD
IC601 LC75396N AUDIO PROCESSOR
GRAPHIC EQUALIZER VO VO
POWER S-MUTE C-MUTE R-MUTE
FRONT IN
48 64 49 63
VSS
26
CENTER REAR IN 4 42 L R 5 43 L R X-BASS 6 42 L R
18 30
R
JK452 L R IN
+B5
+B5
RUN PULSE SOLENOID
VIDEO1
VIDEO2
DRIVER SOLENOID SOLM1 QM03
+B4 PB MUTE Q117 Q118 MUTING 8 REC MUTE Q121 Q122 MUTING REC
34 38 35 37 36 18
TAPE 1
PB HEAD L-CH R-CH P.B REC/PB HEAD L-CH R-CH REC P.B REC/PB Q103,Q104 Q105,Q106
PLAYBACK&RECORD AMP. IC101 AN7345K
L(T1) 1 R(T1) 24 L(T2) 2 R(T2) 23 L NF 3 R NF 4 POP REDUCE 6 L REC 9 R REC 16 AC BIAS Q109 Q107 Q108 REF +B4
14 13 12
PB MUTE
R-OUT L-OUT LT-IN RT-IN
P.B.
P.B 4 L 21 R 5
20
45 46
R-OUT
LTIN
RTIN
L-OUT
S-IN C-I
23 24
CL CL DATA DATA
TAPE 2
T1/T2 REC
H/N
18
7 L R 8
IC501 LV1035M DOLBY PRO LOGIC DECORDER
22 33 21 31 32
ENABLE
42
9 C-OUT S-OUT
17
NOR/ HIGH
15
10
ALC X501 T1/T2 REC/PB
FLOUT FROUT COUT RLOUT BAIS
T1/T2
19
Q110
Q111
20 19
18 17 16 42
SWITCHING ERASE HEAD Q128 L103 Q129 Q130 Q124 BAIS
SWITCHING Q126
+B4 BEAT CUT
31
IC401 QS7777PF Q-SOUND
C-IN
FLIN FRIN
41 40
6
Figure 20 BLOCK DIAGRAM (2/3) 20
SRS
MAIN SCK MAIN SO MAIN SI CLEAR MAIN STB
+B4
+5V
REC MUTE
71 48 33 20 80
52 40 30 29
8
14 15 16 17 1
CD-C451H
VOLTAGE REGULATOR +12V +5V +B5 Q609
+B2 ~ 8 6 5 7 2 1
SW704~708
VP
Q701
VF1 (AC) 5 VP
71
13 14 15 16 18
19 21 22
TUN MUTE TUN SD TUN SM
MAIN STB MAIN SCK MAIN SI MAIN SO CLEAR
KEY MATRIX
KEY5 23 SW701~SW703 SW709~SW716 SW718,719,721,723,724 SW725,726,728~732 SW733,734,736~740
7 6 4
~
~
KEY0 28
1
80
IC701 IX0223AW MICROCOMPUTER
REMOCON
~
72 70
37 38 36
DATA CLOCK LCK RESET SYS STOP
2 3 4
VSS
VDD
INPUT/OUTPUT EXPANDER IC702 BU2092F
18
~
16
~
13
9
~
LED701~LED705 LED706~LED711
~
POWER S-MUTE
17 46
Q704
5
54
1 17
CE DI DO CLK
+B2
52 29
8
30
48 33 31 20
12 11 10
9
35
34
43 42
47
XL701
14 15 16 17 18
+B6 4 5 6 7 9
10 11 12 13 19 21 53 54 55
+B5
MAIN SCK MAIN SO MAIN SI CLEAR MAIN STB
Q705 Q706 ZD701
+B2
W PUTER
DOLBY P.L
CD RES CD SL CD SL+ CD CQCK CD COIN CD SQOUT CD WRQ CD RWC CD PUIN CD DRF CD O/C SW CD D.NO CD U/D
+B2 MEMORY BACK UP
REMOCON
1
RX701 REMOTE SENSOR 2
3
+B2
BALANCE
4CH SP
57
66
65
64 63 61
SRS
24 25 26 27 28
SPE1-5
IC561/562/563 N5M4558L OPE AMP.
1 4 2 8 6 7
IC562(1/2) N5M4558L OPE AMP.
8 6
SPE IN
+B4
+B2
7 B1
CNS12
TO CD UNIT CNP12
+B1 Q601
C-MUTE
Q602
R-MUTE
Q675 Q603 Q676 Q604
S-MUTE
POWER ON/STB Q201 SWITCHING Q905
POWER
+
M
M901 FAN MOTOR
H/P MUTE Q671 Q672 Q673 Q674
IC681 NJM4560L HEADPHONE AMP.
3 5
+B3 8 1 7 4 JK700 HEADPHONES
ZER
VOLUME VOLUME CENTER REAR IN
20 28
REAR OUT CENTER OUT
+B3 R 17 L 31 +B3 IN L 3 R 5 8 4 JK452
6 42 L R
18 30
S-IN C-IN
IC651 NJM4558L OPE AMP.
OUT 1 L 7 R R L
13
8
9
IC471 NJM4558L OPE AMP.
4
REAR-OUT 2 5 CENTER OUT Q903
REAR SPEAKER CENTER SPEAKER
Q901 FRONT R-IN 14 L-IN +B3
10 12
Q902 F901 T4A L250V F902 T4A L250V SO901 SPEAKER TERMINAL + +
IC901 STK40704 POWER AMP.
B 1 2 +B 3 15
FRONT 6 L-OUT 7 R-OUT
FRONT SPEAKER
Q609
D801 VOLTAGE REGURATER B1 15V
F802 T3.15A L250V F803 T3.15A L250V T801 POWER TRANSFORMER
VOLTAGE REGULATOR TO CD UNIT +B1 +7.3V Q820 Q822 VOLTAGE REGULATOR +B4 +12V (ANALOG) Q824 Q825 Q827 ZD801 Q801 +B5 +12V (MOTOR) Q823 Q826 VOLTAGE REGULATOR VF1(AC) VP VF2(AC) VOLTAGE REGULATOR D807 D809
~
F832 T500mA L250V
D803 ~ D806 AC POWER
SO801 SUPPLY CORD
T.F F805 T1.6A L250V L801 CORE AC 230-240V 50Hz
Figure 21 BLOCK DIAGRAM (3/3) 21
CD-C451H
A
C15 0.01
R2 1K
C1 47/16
+B
+B
C34 0.33/50
C3 1/50
C33 0.47/50
C31 220/6.3
2.5V
Q1 KTA1266 GR
4.8V
C2 0.01
1.5V 4.2V
R1 22
CNS1B
4.8V
4.2V
R46 560
2.2V
2.5V
4.8V
4.8V
2.4V
0V
1V
1V
0V
0V
4V
4V
0V
64 63
LDS VCC1
62
LDD
61 60
BH1 PH1
59
LF2
58
VR
57
REFI
56
VCC2
55 54 53 52 51 50 49 0V 48 TBC 47 FSC DGND CE
LATOH + FSS CE DRF DAT CL CLK DEF
B
K 5 E 4 A 3 B 2 F 1
REF
1 2 3 4 5
1 2 3 4 5
K A B E F CNP1 C4 0.1/50
C54 0.001 R9 100K
2.4V 2.4V 2.5V 2.5V 2.4V
1 2 3 4 5 6 7
+
REF FE1
+ FIN2 REF + FIN1 REF + E F TB TE TE
R45 4.7K C29 4.7/50
C85 0.001
CNS1A
C30 0.1/50
C32 0.01
RF REF
+ + + VCR + + VCR DEF HFL DRF
2
C28 0.1
EFBAL FOSTA TOSTA 2FREQ LASER
2.5V 2.5V 0V 2.4V
46 45 44 SLI
+
VCR
CL
REF
TE
2.5V
9
C
1/16 LD MON K E B LD GND A F C LT0H30M1 1M 2200P 1M TR+ FO+
3
REF
C27 0.001
REF
R8 15K
2.5V
+ +
VCR
R10 2.2K R11 6.8K
S.Q.R
SLOF SLOF
R12 2.4V TH 100 10 R13 C9 C8 1K 0.047 0.068 2.5V TA
11 12 2.5V TD
REF
+
THD
C5 0.033 2.5V 8 C6 0.033 2.5V 9 C7 0.1/50
REF TESI SCI
FSTA IC1 LA9241M 8/12CM SERVO AMP.SLOF VCC +
C26 0.033 R41 47K C25 27P
R44 33K
SLC
43
R42 47K R39 1K
REF
+
2.5V 2.4V
RFS REF + +
+
42
R40 5.6K
CV CV+ JP JP+ JPCLO
+ TGL1 GL THDL
REF
+ FSTA REF JP
RF
RFSM CV+ CV SLOF HFL TES TOFF
41
JP + REF TO FSC FOSTA GEN + REF
REF FE1 + REF
R14 R15 27K 12K C10 2.5V TD 13 180P 2.5V JP 5 4 3 2 1 K E A B F
14 15
SLOF
GEN
REF REF
10
REF
SLEO
OR +
4 5
+
SL
40 39 38 37 36 35 34 33
R43 C24 56K 2.2P 1.5V HF R38 470 0V TP1
0V 4.8V 0V 0V 4.8V 4.8V 0V
C2 0.0
FE AGND
SPG
SPO
SLD
SP
FD
FA
R17 33K C11 R18 0.1 15K
2.5V
2.5V
2.5V
2.5V
2.5V
2.4V
2.5V
2.5V
2.5V
8
R21 R20 22K 1K
SL+ JP
SPI
SP
FA
FE
2200P
R16 3.3K
+
2.5V
TO
+ GEN REF +
+
+
TGL JP+
2.5V 16 FD
REF 24 25 26
REF
17
18 19
20 21 22 23
0V
27 28
2.5V 2.5V
12
C19 1/50
29 30 31 32
2.5V 2.2V 2.2V 0V
6
R36 220K
C13 330P R26 82K
R28 10K R29 56K
C17 0.001
R23 10K
FO TR ACTUATOR
1 2 3 4 5 6 7 8
C18 0.47/50
TR TR+ FO+ FO GND PD VR LD
1
R22 22K
C14 0.01 R24 47K R25 1.5K
R30 R27 R31 6.8K 39K 1.2K
R19 1K
C20 47/16
D
C16 0.0047
R33 R32 1.2K 10K R34 22K
C21 0.0033
R35 220K
7
C35 1/50 D1 1SS133
C12 0.1 R37 82K
PICKUP UNIT
IC3 M56748FP FOCUS/TRACKING/SPIN/SLIDE DRIVER
E
CNS2B CNS2A
TR TR+ FO+ FO GND
1 2 3 4 5 PD 6 VR 7 LD 8
1 2 3 4 5 6 7 8 CNP2
1 2 3 4 5 6 7 8 C36 100/16
1 2 3 4 5 6 7 8 9
2.5V 2.5V 0V 2.5V 2.5V 2V 2V 0V 0V
0V 36 0V 35 0V 34
D2 D3 RL104A RL104A
2.5V 33 2.5V 32 1.8V 31 1.8V 30 0V 29 0V 28 0V 27 0V 26 2V 25 2V 24 2.5V 23 2.5V 22 2.5V 21 4.7V 20 0.7V 19 +B
D4 RL104A
C84 0.001
10 0V 11 0V 12 2V 13 2V 14 2.5V 15 2.5V 16 0V 17 4.7V 18 0V
R48 10K
F
CNP3A CNS3B
CNS3A
M1 DISC MOTOR M2 SLED MOTOR SW4 PICKUP IN
+
M M
CNP3
+
G
CD MOTOR PWB-E
CNP12
H
· The numbers 1 to 12 are waveform numbers shown in page 44. · NOTES ON SCHEMATIC DIAGRAM can be found on page 18.
1 2 3 4 5 6
Figure 22 SCHEMATIC DIAGRAM (1/14) 22
RWC(DSP) WRQ(DSP) CO IN(DSP)
6 5 4 3 2 1
6 5 4 3 2 1
6 5 4 3 2 1
6 5 4 3 2 1
SP+ SP SL_+ SL_ CD_PUIN CD_GND
1 2 3
CD-C451H
R57 1K
C44 100P
C45 100P
C47 100P
C48 100P
R58 1K R59 1K
C38 0.01
+B
R60 1K
0V 0V 0V
2.4V 2.5V 0V
C46 100P
2.4V
2.4V
4V
4V
4V
0V
0V
0V
0V
TEST11 /RES
SQOUT
/CQCK
COIN
WRQ FSX
TEST1 /CS
TEST5
SBCK SFSY
4M 16M
RWC
PW
C28 0.1
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50
49 EFLG 48 2.2V SBSY 47 0V XVSS 46 0V XIN 45 44 2.1V 2.2V
0V
C49 100P
R61 1K R62 1K R63 1K
CD SIGNAL
SUB-CODE
R44 33K 3 R42 47K R39 1K R51 3.3M
0V 0V
1 TA1 2
0V
DEF1
U-COM INTERFACE
C42 15P R93 220
D81 1SS133 C83 0.022
8
C23 0.0027
3 C39 R50 0V 0.047 680 4 1.9V 5 C40 0.047 R52 27K 4.8V 6 R53 0V 7 1.2K 0V 8 2.5V 9
2.5V 0V 0V 0V 4.8V 0V 0V 10 11 12 13 14 15 16
C53 0.022
PDO VVSS ISET VCO CLOCK OSC CONTROL VVDD FR VSS EFMO SLICE LEVEL EFMIN CONTROL TEST2 CLV+ CLV CLV DIGITAL SERVO V/P HLF SERVO TES COMMAND
ERROR COERECT FLAG CONTROL 4FS DIGITAL
XVDD 43 4.8V MUTER 42 4.8V RVDD 41 4.5V R72 RCHO 40 2V 1BIT RVSS 39 0V DAC 0V LVSS 38 LCHO 37 2V 4.5V LVDD 36 MUTEL 35 4.8V NC 34 0V TEST4 33 0V DIGITAL OUT
TEST3 EMPH DOUT C2F
D82 1SS133
2KX8 RAM
X-TAL GENERATOR
XOUT
XL1 16.934MHz
C41 12P
2.7K C72 10/50 R71 2.7K R74 390 R73 390
C73 C74 220P 220P
CD_RCH A_GND CD_LCH Q52 KTC3203 Y
6.5V 5.5V +B
SYNC-DETECT EFM DEMODULATE
FILTER
R-CH A_GND L-CH D-GND 7.3V M_12V
+B
1 2 3 4 5 6
CNS11 TO MAIN PWB(2/3) P32 6-A
C43 330/6.3
IC2 LC78622K SERVO/SIGNAL CONTROL
EXTERNAL OUTPUT
CONT1 CONT2 CONT3 CONT4 CONT5 FSEQ VDD
C71 10/50 +B 4.9V R55 150 L61 0.82µH
+5V
CNP11
R66 220
ZD61 MTZJ5.6B
C22 220P
TOFF
11
PCK
TGL
JP+
JP
C50 C51 0.022 100/16
4.8V
2.5V
0V 4.8V
4.8V 2.5V
0V
0V
0V
0V
0V
0V
0V
0V
0V
4.8V
17 18 19 20 21 22 23
24 25 26 27 28 29 30 31
32
+B
R88 1K R89 1K R90 1K R91 1K
+B
C57 0.001 C35 /50 D1 1SS133 C56 0.022 CD_LD_M+
+B +B
Q51 KRC107 M
3 0V 1 0V 2 2.9V
R54 330 3 2 1
CNP99
R80 6.8K
CD_LD_M
D4 RL104A
IC81 TA7291S LOADING MOTOR DRIVER
1 2 3 4 5 6 7 8 9
0V 6.4V 1V 0V 6.5V 6.5V 6.5V 2.9V 0V
+B
Q91 KTA1271 Y Q93 KRC102 M
0V 3 0V 1 12V 2 12V 0V 12V
R81 2.7K
C52 100/16
R64 22
C75 0.001
R87 10K
SOLM2 SOLENOID LOCK
C81 47/16
C82 47/16
R83 3.9
R82 6.8K
R86 2.2K
D91 1SS133 BIM5 SOL 1 GND(M) 2 M+ 3 4 M GND(D) 5 OPEN/CLOSE 6 DISC NO. 7 GND(D) 8 UP/DOWN 9 10 GND(D) 10 CNP10 CNS10 1 2 3 4 5 6 7 8 9 6 5 4 3 2 1 + M3 T/T UP/DOWN
R85 56 (1/2)
M LOADING
SW1 OPEN CLOSE
C37 0.022
CD SIGNAL
SENSOR PWB-F
SW2 MECHA UP 1 2 CNS5 1 2 SW3 DISC NUMBER
RWC(DSP) WRQ(DSP) CO IN(DSP) SQ OUT(DSP) CQ CK(DSP) RES(DSP) DRF (ASP) D_GND
R47 10K
SLD+ SLD PUIN SW OPEN/CLOSE DISC NO. UP/DOWN
2
CD SERVO PWB-C
1 2 3 4 5 6 7 8 9 10 11 12 13 14 CNS12 TO DISPLAY PWB(2/3) P32 2-A
7
8
9
10
11
12
Figure 23 SCHEMATIC DIAGRAM (2/14) 23
CD-C451H
A
MW ANT.
VD301-1 KV1236Z23F
R319 100K C332 0.022 C343 33P
C330 10P (UJ)
C331 0.047
T302
0.022
T301
C363
B
C302 0.001 CHASSIS GND D301 1SS133 D302 1SS133
0.022
0.022
C322 6.8P (CH)
C333 22P (CH)
0V
C365
C364
0V
C366
LW ANT.
0V
R331 5.6K
L353 1mH
C362 3.3/50 C361
C339 22P (CH)
(0.7V)
FM MUTE LEVEL +B
10/16
VR351 10K(B)
R358 8.2K
0.001
Q302 KTC3199 GR
C342 0.022
L354
45
R323 T306 68K
C334 18P (UJ)
1 FM IF AM OSC 24 IN OUT
2 AM MIX AM OSC 23 OUT IN
FM AFC 22
AM RF 21 IN
MW OSC. CNP301 MW/LW LOOP ANTENNA 1 2 L341 BALUN D303 1SS133 C329 33P
C327 680P
C
5 GND
3 REG
0V
0V(0.7V)
C324 27P (UJ) C325 0V 220P
0V
Q303 KTC3199 GR
CF352
R334 5.6K
0V
CF302 1 3
R352 1K 1 3
8 FM DET
R3 27
0V
6 SD
C326 18P (CH)
7 STEREO
0V
4
AM IF IN
R333 5.6K
VSM 20 AM LOW CUT 19 FM/AM OUT 18
R336 4.7K
R324 VD301-2 KV1236Z23F 100K C336 R332 C335 470P 100K 18P (CH)
IC303 5.6K LA1832 FM IF DET/ FM MPX/AM IF
R351
LOW PA FILTE R350 2.7K C367 1/50
C323 0.022
C337 0.022
C351 0.022
C352 10/16
R337 470
C353 0.022
CHASSIS GND
D304 1SS133 C338 0.001
D
T351 AM IIF
C346 0.022
C345 0.022
CHASSIS GND
C301 0.001
R301 330
R345 4.7K
+B C380 10/16 R393 1K R377 47K L351 100µH R378 82K
C321 100/16
4 DI R372 5 CL 1K AIN 19 6 DO PD 18 R379 2.2K 7 FM VDD 17
E
CF301
1
3
(0V) 0.8V
R344 470
0V
Q301 2SC380 O FM IF AMP.
FM 75ohms SO301 ANTENNA TERMINAL
C347 0.022
R348 680
2
R349 33
+B R382 150
C397 0.022
C394 47/16 C392 0.001 R381 C393 R380 10K 1/50 1.5K
C387 0.022
1 X IN X OUT 22
FM IN 16 AM IN 15
8 MW
VT 4 F OUT 3 GND 2
IF OUT 1
ANT GND GND VCC
FE301 FM FRONTEND
C382 15P (CH) MW+B
(12.1V) 0V 2
(1.2V) 12.1V
F
3
R374 1K R397 1K
12.1V
1
Q362 KRA107 M
D352 1SS133 R373 1K
+B R371 1K Q371 KTA1266 GR 2
(0V) 3.9V
C384 0.001
+B
9 FM
3 CE
8 7 6 5
C341 0.022
X352 4.5MHz
14 10 MO/ST 13 IF IN 12 11 ST IND
R369 82
L342 2.2mmH
R346 330
R347 6.8K
2
VSS 21 AOUT 20
9.4V (0V)
C381 12P (CH)
IC302 LC72131 PLL (TUNER)
C385 0.01
G
D351 1SS13
H
· NOTES ON SCHEMATIC DIAGRAM can be found on page 18.
1 2 3 4 5 6
Figure 24 SCHEMATIC DIAGRAM (3/14) 24
C399
T305 LW OSC.
(0.7V) Q304 KTC3199 GR R335 100K
2
2
C354 0.022 CF351
C328 0.022
C350 0.022
0 022
CD-C451H
RT34 56K
2.6V (0V)
QT21 KTC3199 GR
5.2V (0V) 2V (0V)
TUNER PWB-H
CT36 0.022
R357 470K C369 27P C374 0.033
RT33 56K
RT32 10K
CT37 0.022
C373 0.033
RT37 220K
RT36 220K
RT35 220K RT26 1K
0.001
L354
R364 2.2K
X351 456KHz
TP
1 VREF SYR 24 2 MPXIN CE 23 DI 22 3 VDDA
C372 1/50
R-CH 15 OUT L-CH 14 OUT PHASE MO/ST 13 12 C358 (FM/AM)
CU FM/AM OUT 18
MPX 17 VCO MPX 16 IN
FLOUT
C367 1/50
0V
0.7V (0V)
7 STEREO
10 IF OUT 11 PHASE
D353 1SS133
CT24 0.022
5 GND
9 VCC
8 FM DET
6 SD
CT23 10/16 CT21 47/10 LT21 2.2µH
RT21 100K
R367 C375 1K 3.3/50 R368 33K 0V R366 10K MUTING 0V Q354 KTC3199 GR R354 3.9K +B
0.7V (0V)
12 XOUT
4 VSSA
6 CIN
7 T1
8 T2
10
11
5
9
CT25 560P
CT26 22P (CH)
1/50
R353 270
+B +B
100/10
C354 0.022 CF351
0.022
0.022
C399
C398
C355 22P
C370 1/50
C356 0.001
RT49 390
+B R393 1K R377 47K 51 µH R378 82K +B C386 330P R395 47K +B
L352 C396 100µH 100/10 C395 0.022 R392 390 +B R391 390 Q360 KTA1266 GR
11.3V (0V)
12.1V 11.3V (12.1V)
85 01
10 MO/ST 13 IF IN 12 11 ST IND
ZDT21 MTZJ5.1B
RT48 390
ZD351 MTZJ5.1B
CT43 10/16
C357 R355 2.2/50 3.3K
CT22 0.022
+B
FM SIGNAL AM SIGNAL
R370 1K
R385 5.6K
R376 1K R360 4.7K
R359 1.8K
R383 5.6K C391 47/16
3 +B
0V1
(0V) 3.9V
Q361 KRC107 M MPX PHASE
D351 1SS133
SM SD R L TUN MUTE A GND A+12V DI CE DO CLK D GND
1 R
2
3 0V (3.6V)
ZD352 MTZJ3.9B
R387 22K
R384 5.6K
+B
12 11 10
9 8 7 6 5 4 3 2 1
CNP303
CNP303 TO MAIN PWB(2/3) P32 5-H
7
8
9
10
11
XT21 CT27 4.332MHz 22P (CH)
CL 21
DO 20
RDS-ID 19
SYNC 18
VSSD 15
VDDD 14 XIN 13
C368 1/50
R362 470
LOW PASS FILTER R350 2.7K
MUTING Q353 KTC3199 GR 0V R365 10K
C366
R356 1K
RT29 1K
TP TP
CT28 47/10 CT29 0.022
17 16
LT22 2.2µH
C371R361 1/50 470
ICT21 LC72720 RDS DECORDER
R363 2.2K
RT30 1K
RT28 1K TP
RT51 1K RT52 1K RT53 1K RT54 1K
12
Figure 25 SCHEMATIC DIAGRAM (4/14) 25
CD-C451H
QM05 KTA1266GR DRIVER
A
RM11 8.2K
WTM1
QM02 KTA1273Y MOTOR DRIV CM01 47/16 QM03 KTA1271Y DRIVER
TAPE MECHANISM PWB-F
FWM2 MM1 TAPE MOTOR L H + 1 TAPE VRM1 SPEED 3.3K(B) PHM1 4 SWM3 REC FWD SWM6 CAM SWM5 F.A.S. SOLM1 SOLENOID 13 SWM4 REC RVS CNPM2 1 RM1 2.7K
MOT L MOT H MOT +B T2_A_FP TA_CAM_SW D_GND T1_RUN T2_RUN T2_PH_IN PUL T2_B_FP
M
B
1 2 3 4 5 6 7 8 9
10 11 12 13
MOT L MOT H MOT +B T2_A_FP TA_CAM_SW D_GND T1_RUN T2_RUN T2_PH_IN PUL T2_B_FP
+B
DM02 1SS133
FWM1
R
RM 1.2
C
R-CH
L-CH
CNS101 1 2 3
1 2 3
CNP101 TAPE1_R A_GND TAPE1_L
C102 680P C101 680P
D
TAPE1 PLAYBACK HEAD
+B +B
C109 0.022
R114 10K R113 10K 2 R115 4.7K
Q110 KRC104 M 3 1 R101 1K R102 1K
Q109 KTA1266 GR
1 2 3 Q111 KRC104 M R120 56 C118 C120 0.033 560P R122 100K L108 2.2µH
R124 4.7K R132 15K
R136 C130 1.8K 470P
R140 560
FLEXIBLE PWB
REC/P.B. Q104 2SC1845 F
R108 47K R104 2.2K
C108 680P
CNS102
CNP102
C106 330P
Q108 KTC3199 GR
BI102
R106 3.3K
ERASE HEAD
R192 1K
C112 330P
24
C122 1/50
R118 1K
C114 330P
R138 6.8K
R112 15K
C116 47/16
R126 5.6K
R134 68K
E
C1 22
20 19 18 17 + H +
23
22
21 112K + Hich=T1 + 112K
F
R-CH
TAPE2_L2
R103 2.2K
TAPE2 RECORD/ PLAYBACK HEAD
R105 3.3K
C105 330P
C115 47/16
R121 100K
C117 0.033
R107 47K
R111 15K
Q103 2SC1845 F REC/P.B.
R135 1.8K
R119 56
R131 15K
C129 470P
C119 R125 560P 5.6K
R123 4.7K
HEAD PWB-H
C127 0.022
R137 6.8K
R191 1K
Q107 KTC3199 GR C107 680P
R109 4.7K
C113 330P
L107 2.2µH
L-CH
1 2 3 4 5 6
1 2 3 4 5 6 7
M_GND TAPE2_R2 TAPE2_R1 A_GND TAPE2_L1
REC/P.B. Q106 2SC1845 F Q105 2SC1845 F REC/P.B. R117 1K
R110 4.7K
ERASE
1 2 3 4 5 6 7
1 C111 330P
2
3 C121 1/50
4
5
6 C128 3.3/50
7
8 C1 22
G
R139 560
M_G
H
· NOTES ON SCHEMATIC DIAGRAM can be found on page 18.
1 2 3 4 5 6
Figure 26 SCHEMATIC DIAGRAM (5/14) 26
CD-C451H
MAIN PWB-A1(1/3)
GR
QM02 KTA1273Y OTOR DRIVER 01 6 QM03 A1271Y RIVER
RM12 33K +B RM06 2.2K
+B TA_MOT_H/L TA_PUL TA_MOT_SW 12 11 10
RM07 10 RM09 2.2K RM08 10K
RM05 10K
M_12V
17
T2_A_FP TA_CAM_SW
8
18
T1_RUN T2_RUN
13 14
RM16 RM15 10K 10K
RM19 3.3K
RM10 1.2K
+B
PLAYBACK SIGNAL RECORD SIGNAL
RM14 10K
RM20 10K
D_5V
15 16
DM03 1SS133
M_GND
REC/PB REC_MUTE BIAS D_GND T1/T2 PB_MUTE T2_B_FP BEAT_CUT
TO MAIN SECTION(2/3) P32 5/6-A 1-C/E
1 2 3 4 5 6 7 9
TAPE_R-CH
21 20 W X
R156 120K
Q122 KTC3199 GR
+B
TAPE_L-CH REC_R-CH REC_L-CH
MUTING Q118 2SC2878 A
MUTING Q117 2SC2878 A
R193 220
MUTING
R155 120K
A_GND A_12V
Y Z
TO MAIN SECTION(3/3) P34 2/3-H 6-A
C163 47/16
C110 47/25
R144 10K
R143 10K
R154 10K
130 70P
R140 560 R146 10K
C144 0.022
C136 0.039
C140 0.0033
C143 0.022
R147 10K
R153 10K
Q121 KTC3199 GR MUTING C155 100P
C146 220/10
R142 47 L102 1.8mH
+B
+B
C142 1/50
C145 22/25
R162 47K
C147 0.022
1 R164 4.7K 2 3
R158 470 +B
Q124 KTA1266 GR SWITCHING
C134 22/25
17 + + 56K Hich=CHROME 56K 16 15
Nor/ CrO2 Vcc
IC101 AN7345K PLAYBACK AND RECORD/ PLAYBACK AMP.
Q126 KRC104 M SWITCHING
14 RIPPLE
ALC
13
R160 150
GND
C162 0.047(ML)
8 C133 22/25
6.8K
9
10
11
12
R166 R167 27K 47K
Q128 2SC2236 Y L104 330µH
L103 1mH
R141 47
C141 1/50
C139 0.0033
C150 0.0082 (P.P) R168 4.7
L101 1.8mH
C161 560P
C135 0.039 R139 560
R145 10K
C151 0.027 (ML)
C152 47/16
Q130 KTC3199 GR
R170 3.3K
Q129 KTC3199 GR
M_GND
7
8
R171 4.7K
C156 0.022
9
10
11
12
Figure 27 SCHEMATIC DIAGRAM (6/14) 27
C
B
F
E
D
G
H A
CD-C451H
DISPLAY PWB-A2
· NOTES ON SCHEMATIC DIAGRAM can be found on page 18.
41 40
1
F F
B
B
B
R778 100K
S22 S21 S20 S19 S18 S17 S16 S15 S14 S13 S12 S11 S10 S09 S08 S07 S06 S05 S04 S03 S02 S01 G11 G10 G09 G08 G07
FL701
37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
2
B VLOAD 11G 10G P11 P10 9G 8G P9 P8 P7 P6 P5 P4 P3 P2 P1
3
P12 P13
80 P95/ FIP7 79 P96/ FIP8 78 P97/ FIP9 77 P100/ FIP10 76 P101/ FIP11 75 P102/ FIP12 74 P103/ FIP13 73 P104/ FIP14 72 P105/ FIP15 71 VLOAD 70 P106/ FIP16 69 P107/ FIP17 68 P110/ FIP18 67 P111/ FIP19 66 P112/ FIP20 65 P113/ FIP21
G06 G05 G04 G03 P94/FIP6 P93/FIP5 P92/FIP4 P91/FIP3 P90/FIP2 7G 6G 5G 4G 3G P81/FIP1 2G G02 G01
28.4V
FM SIGNAL
4
P114/ FIP22 P115/ FIP23 P116/ FIP24 P117/ FIP25 P120/ FIP26 P121/ FIP27 P122/ FIP28 P123/ FIP29 P20 P21 P22 P124/ FIP30 P125/ FIP31 P126/ FIP32 P127/ FIP33 VDD
+B
9 8 7 6 5
Figure 28 SCHEMATIC DIAGRAM (7/14) 28
P14 P15 P16
R776 1K
F
2 1
F
28.4V 4.8V
Q701 KTC3199 GR
C734 0.0047
P17 P18 P19
P80/FIP0 VDD P27/SCK0 P26/SO0/SB1 P25/SI0/SB0 P24/BUSY VDD P70 P71 P72 P23/STB P22/SCK1 P21/SO1 P20/SI1
1G
+B
1 2 3 4 5 6 7 8 9
1 2 3 4 5
JK700 HEADPHONES
IC701 IX0223AW SYSTEM MICROCOMPUTER
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42
5
C735 0.0047 C716 47/16 R777 33 C712 1/50 C713 1/50
TUN_CLK TUN_DI TUN_DO TUN_CE MAIN_STB MAIN_SCK MAIN_SI MAIN_SO VSS IC RESET RESET
R729 1K R783 10K R727 1K R726
REMOCON SYS STOP
P00/INTP0/TI0 P01/INTP1 P02/INTP2 P03/INTP3/CI0 POWER F_MUTE P30/TO0 P31/TO1
P74 P73 AVSS P17/ANI7 P16/ANI6 P15/ANI5
P P P
CLEAR TUN_MUTE
10 11 12 13 14 15 16 17 18 19 20 21 22 23
R793 4.7
6
TUN_SD TUN_SM
TUN_SD TUN_SM TUN_MUTE HP_LCH HP RCH
R701 R702 R703 R704 R705 R706 R707 R708 R709 R710 R711 C702 R712 R713 C701
1K 1K 1K 1K 1K 1K 1K 1K 1K 1K 100 220/10 1K 1K 0.022
24 23 22 21 2
CD-C451H
RD07 RD06 RD05 RD04 12K 5.6K 3.9K 2.2K SW708 SW707 SW706 SW705 SW704 OPEN /CLOSE R749 10K DISC SKIP DISC 3 DISC 2 DISC 1
FW701-2
FW701
1
DISPLAY PWB-A3
+B
3 FW701-1 1 3
R779 R780 R781
10K 1.8K 10K
+B +B
RD01 1K SW701
ON/ STAND-BY
RD02 RD03 1.2K 1.8K SW702 SW703
CLOCK TIMER /SLEEP
220/10 1K 1K 0.022
R736 8.2K R735 8.2K R734 8.2K R733 8.2K R732 8.2K R731 8.2K
RD08 1K SW709 RD15 1K
CD
RD09 RD10 1.2K 1.8K SW710 SW711
TUNER /BAND TAPE
RD11 2.2K SW712
VIDEO /AUX
RD14 RD13 RD12 12K 5.6K 3.9K SW713 SW714 SW715 SW716
EON PTY./TI SEARCH ASPM DISPLAY MODE
C702 R712 R713 C701
RD16 1.2K SW718
RD17 1.8K
CENTER MODE /PHANTOM
RD18 2.2K SW719
RD19 3.9K
CENTER MODE /NORMAL
SW721
RD20 5.6K
RD21 12K SW723 SW724
TUNING UP/TIME
TUN_SM
TUN_SD
R714 R715
1K 1K
DOLBY PRO LOGIC REC /BYPASS PAUSE
20 21 22 23 24
P17/ANI7
P16/ANI6
P15/ANI5
P14/ANI4
AVSS
RD22 RD23 1K 1.2K SW725 SW726 R716 R717 R718 R719 1K 1K 1K 1K
+B
VOLUME UP X-BASS
RD24 1.8K
RD25 2.2K SW728
STOP
RD27 RD26 5.6K 3.9K SW729 SW730
FWD
RD28 12K SW731 SW732
TUNING DOWN /TIME
KEY-3 P13/ ANI3 25 KEY-2 P12/ ANI2 26 KEY-1 P11/ANI1 27 KEY-0 P10/ANI0 28 AVDD AVDD 29 AVREF AVREF 30 P04 P04/XT1 31 XT2 VSS 32 XT2 VSS 33 X1 34 X2 35 CE 36 DI 37 CL 38
FF MEMORY PRESET UP /SET
RD29 RD30 1K 1.2K SW733 SW734
RD31 1.8K
RD32 2.2K SW736
REVERSE MODE
RD35 RD34 RD33 12K 5.6K 3.9K SW737 SW738 SW739 SW740
REV BEAT REW/ CD/TAPE 1 CANCEL PRESET EDIT DOWN TAPE 1 EDIT
C726
C725 C724 C723 C722 C721
VOLUME EQUALIZER DOWN /DEMO
R
XL701 C703 4.19MHz 15P
+B
C726-C721:150P R744 820 R743 820 LED710 333GTH-2 LED708 333GTH-2 LED706 333GTH-2 LED711 333GTH-2 LED709 333GTH-2 QSOUND VIRTUAL
P37 P36/BUZ
P03/INTP3/CI0
P35/PCL
P02/INTP2
C730 0.022
CLOCK Q11
P30/TO0
P31/TO1
P32/TO2
P34/TI2 39 P33/ 40 TI1
C729 47/16
C704 18P R720 1K R721 1K R722 1K
+B
18 17 16 15 14 13 12 11 10
VDD
OE
Q10
Q9
Q8
Q7
Q6
Q5
R742 820
LED707 333GTH-2 PROLOGIC
DATA
VSS
LCK
Q0
Q1
Q2
Q3
45 44 43 42 41
Q4
IC702 BU2092F
R741 R740 R739 R738 R737
+B
INPUT/OUTPUT EXPANDER
1K 1K 1K 1K 1K LED705 LED704 LED703 LED702 LED701 D708 1SS133 333GTH-2 REV 333GTH-2 REW 333GTH-2 STOP 333GTH-2 FF 333GTH-2 PLAY
POWER
R783 10K
R727 1K
F_MUTE
1 2 3 4 5 6 7 8 9
R726 1K
R728 10K
+B
+B
5V BACK UP
+B
R775 2.2K
C708 0.01
2 R763 5V 1K C706 0.01
1
0V 0V
3
0V
R768 10K
0V
0V
R771 100
0V
1 2 3
D706 1SS133
+B +B
+B +B
+B +B
24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
9 8 7 6 5 4 3 2 1 CNS