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CD-BA250/CD-BA2600
SERVICE MANUAL
No. S1105CDBA250/
MINI COMPONENT SYSTEM
MODEL CD-BA250
CD-BA250 Mini Component System consisting of CD-BA250 (main unit) and CP-BA250 (speaker system).
MINI COMPONENT SYSTEM
MODEL CD-BA2600
CD-BA2600 Mini Component System consisting of CD-BA2600 (main unit) and CP-BA2600 (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.
CONTENTS
Page
IMPORTANT SERVICE NOTES (FOR U.S.A. ONLY) ....................................................................................................... 2 SPECIFICATIONS ............................................................................................................................................................. 2 NAMES OF PARTS ........................................................................................................................................................... 3 OPERATION MANUAL ...................................................................................................................................................... 5 DISASSEMBLY .................................................................................................................................................................. 9 REMOVING AND REINSTALLING THE MAIN PARTS ................................................................................................... 12 ADJUSTMENT ................................................................................................................................................................. 13 BLOCK DIAGRAM ........................................................................................................................................................... 17 SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD .............................................................................................. 20 VOLTAGE ........................................................................................................................................................................ 36 NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 37 TYPES OF TRANSISTOR AND LED ................................................................................................................................ 37 WAVEFORMS OF CD CIRCUIT ...................................................................................................................................... 38 TROUBLESHOOTING ..................................................................................................................................................... 39 FUNCTION TABLE OF IC ................................................................................................................................................ 43 FL DISPLAY ...................................................................................................................................................................... 49 REPLACEMENT PARTS LIST/EXPLODED VIEW PACKING OF THE SET (FOR U.S.A. 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-BA250/CD-BA2600
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL.
IMPORTANT SERVICE NOTES (FOR U.S.A. ONLY)
BEFORE RETURNING THE AUDIO PRODUCT (Fire & Shock Hazard) Before returning the audio product to the user, perform the following safety checks. 1. Inspect all lead dress to make certain that leads are not pinched or that hardware is not lodged between the chassis and other metal parts in the audio product. 2. Inspect all protective devices such as insulating materials, cabinet, terminal board, adjustment and compartment covers or shields, mechanical insulators etc. 3. To be sure that no shock hazard exists, check for leakage current in the following manner. * Plug the AC line cord directly into a 120 volt AC outlet. * Using two clip leads, connect a 1.5k ohm, 10 watt resistor paralleled by a 0.15µF capacitor in series with all exposed metal cabinet parts and a known earth ground, such as conduit or electrical ground connected to earth ground. * Use a VTVM or VOM with 1000 ohm per volt, or higher, sensitivity to measure the AC voltage drop across the resistor (See diagram). * Connect the resistor connection to all exposed metal parts having a return path to the chassis (antenna, metal cabinet, screw heads, knobs and control shafts, escutcheon, etc.) and measure the AC voltage drop across the resistor.
VTVM AC SCALE 1.5k ohms 10W
0.15 µ F TEST PROBE TO EXPOSED METAL PARTS
CONNECT TO KNOWN EARTH GROUND
All check must be repeated with the AC line cord plug connection reversed. Any reading of 0.3 volt RMS (this corresponds to 0.2 milliamp. AC.) or more is excessive and indicates a potential shock hazard which must be corrected before returning the audio product to the owner.
SPECIFICATIONS
CD-BA250/CD-BA2600
General
Power source Power consumption Dimensions AC 120 V, 60 Hz 128 W Width: 10-5/8" (270 mm) Height: 13" (330 mm) Depth: 13-7/16" (340 mm) 13.8 lbs. (6.3 kg)
Tuner
Frequency range FM: 87.5 - 108 MHz AM: 530 - 1,720 kHz
Cassette deck
Frequency response Signal/noise ratio 50 - 14,000 Hz (Normal tape) 55 dB (TAPE 1, playback) 50 dB (TAPE 2, recording/playback) 0.3 % (WRMS)
Weight
Amplifier
Wow and flutter Output power Output terminals 75 watts minimum RMS per channel into 6 ohms from 60 Hz to 20 kHz, 10% total harmonic distortion Speakers: 6 ohms Headphones: 16 - 50 ohms (recommended: 32 ohms) Input terminals Video/Auxiliary (audio signal): 500 mV/47 kohms
CP-BA250/CP-BA2600
Type 2-way type speaker system 2" (5 cm) Tweeter 5-1/4" (13 cm) Woofer
CD player
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)
Maximum input power Rated input power Impedance Dimensions
150 W 75 W 6 ohms Width: 8-11/16" (220 mm) Height: 13" (330 mm) Depth: 8-9/16" (217 mm) 6.6 lbs. (3.0 kg)/each
Weight
Specifications for this model are subject to change without prior notice. 2
CD-BA250/CD-BA2600
NAMES OF PARTS
CD-BA250/CD-BA2600
Front panel
1. Disc Tray 2. Timer Set Indicator 3. Power On/Stand-by Button 4. Tape 2 Cassette Compartment 5. Tape 1 Cassette Compartment 6. Equalizer Mode Select Button 7. Volume Up or Down Buttons 8. Extra Bass/Demo Mode Button 9. Disc Tray Open/Close Button 10. Disc Skip Button 11. Tuning and Time Up Button 12. CD or Tape Stop Button 13. CD Button 14. Tuner (Band) Button 15. Tape (1 2) Button 16. Video/Auxiliary Button 17. Dimmer Button 18. Clock Button 19. Timer/Sleep Button 20. Headphone Jack 21. CD Play or Repeat, Tape Play Button 22. CD Track Up or Fast Forward, Tape 2 Fast Forward, Tuner Preset Up Button 23. Tuning and Time Down Button 24. Memory/Set Button 25. Tape 2 Record Pause Button 26.CD Track Down or Fast Reverse, Tape 2 Rewind, Tuner Preset Down Button
6
7 8
9 10
1 2 3
4 5 11 12 13 17 18 19 20 23 24 25 26 14 15 16 21 22
Display
1. Extra Bass Indicator 2. FM Stereo Mode Indicator 3. FM Stereo Receiving Indicator 4. CD Repeat Play Indicator 5. CD Pause Indicator 6. CD Play Indicator 7. Disc Number Indicators 8. Timer Play Indicator 9. Timer Recording Indicator 10. Tape 2 Record Indicator 11. Memory Indicator 12. Tape Play Indicator 13. Sleep Indicator 14. Spectrum Analyzer/Volume Level Indicator
1 2 3 4 5 6 10 11 12 14 13
7 8 9
14
14
3
CD-BA250/CD-BA2600
CD-BA250/CD-BA2600
Rear panel
1. FM/AM Loop Antenna Jack 2. Video/Auxiliary (Audio Signal) Input Jacks 3. Speaker Terminals 4. AC Power Cord
1 2 3
4
Remote control
1. Remote Control Transmitter 2. Disc Number Select Buttons 3. CD Pause Button 4. CD Memory Button 5. CD Track Down or Fast Reverse Button 6. CD Clear Button 7. Tape 1 Play Button 8. Tape 1/Tape 2 Stop Button 9. Equalizer Mode Select Button 10. Tape 2 Record Pause Button 11. CD Button 12. Tuner (Band) Button 13. Power On/Stand-by Button 14. Extra Bass Button 15. CD Stop Button 16. CD Play or Repeat Button 17. CD Track Up or Fast Forward Button 18. CD Random Button 19. Tuner Preset Up/Down Buttons 20. Tape 2 Play Button 21. Tape 2 Rewind Button 22. Tape 2 Fast Forward Button 23. Video/Auxiliary Button 24. Tape (1 2) Button 25. Volume Up or Down Buttons
1
D2 D3
4 5 D6 7 8 9 10 11 12 13 14
15 16 17 18 D 19 20 21 22 23 24 25
Buttons with " " mark in the illustration can be operated on the remote control only. Other buttons can be operated both on the main unit and the remote control.
4
CD-BA250/CD-BA2600
CP-BA250/CP-BA2600
Speaker system
1. Tweeter 2. Woofer 3. Bass Reflex Duct 4. Speaker Wire
1
2 3 3 4
OPERATION MANUAL
Setting the Clock
4
Press the TUNING/TIME ( or )button to adjust the hour and then press the MEMORY/SET button.
Press the TUNING/TIME ( or ) button once to advance the time by 1 hour. Holdit down to advance continuously. When the 12-hour display is selected, "AM" will change automatically to "PM".
5
In this example, the clock is set for the 12-hour (AM 12:00) display.
Press the TUNING/TIME ( or ) button to adjust the minutes and then press the MEMORY/SET button.
1 2
Press the ON/STAND-BY button to turn the power on. Press the CLOCK button and within 5 seconds, press the MEMORY/SET button.
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 will not advance even if minutes advance from "59" to "00". The clock begins counting from "0" seconds. (Seconds are not displayed.) The time display will disappear after a few seconds.
To confirm the time display:
3
Press the TUNING/TIME ( or ) button to select 12-hour or 24hour display and then press the MEMORY/SET button.
Press the CLOCK button. The time display will appear for about 5 seconds.
Note:
The "CLOCK" or time will flash at the push of the CLOCK button when the AC power supply is restored after a power failure or unplugging the unit. Readjust the clock as follows. "AM 12:00" "AM 0:00" The 12-hour display will appear. (AM 12:00 - PM 11:59) The 12-hour display will appear.
To readjust the clock:
Perform "Setting the Clock" from the beginning. If the time display is flashing, step 3 (for selecting the 12-hour or 24-hour display) will be skipped.
(AM 0:00 - PM 11:59) "0:00" The 24-hour display will appear. (0:00 - 23:59) Note that this can only be set when the unit is first installed or it has been reset. (Refer to step 3 under "If trouble occurs".)
To change the 12-hour or 24-hour display:
1 2 Clear all theprogrammed contents. [Perform to step 3 under "If trouble occurs"] Perform "Setting the Clock" from the beginning.
5
CD-BA250/CD-BA2600
Troubleshooting Chart
Many potential "problems" can be resolved by the owner without calling a service technician. If something is wrong with this product, check the following before calling your authorized SHARP dealer or service center.
Cassette deck
Symptom Cannot record. Possible cause Is the erase-protection tab removed? Is it a normal tape? (You cannot record on a metal or CrO tape.)
General
Symptom The clock is not on time. When a button is pressed, the unit does not respond. Possible cause Did a power failure occur? Reset the clock. Set this unit to the power stand-by mode and then turn it back on. If the unit still malfunctions, reset it. (Refer to step 3 under "If trouble occurs") No sound is heard. Is the volume level set to "0"? Are the headphones connected? Are the speaker wires disconnected?
Cannot record tracks with proper sound quality. Cannot erase completely. Sound skipping.
Is there any slack? Is the tape stretched?
Cannot hear treble. Sound fluctuation. Cannot remove the tape.
Are the capstans, pinch rollers, or heads dirty? If a power failure occurs during playback, the heads remain engaged with the tape. Do not open the compartment forcibly. Wait until electricity resumes.
CD player
Symptom Playback does not start. Playback stops in the middle or is not performed properly. Playback sounds are skipped, or stopped in the middle of a track. Possible cause Is the disc loaded upside-down? Does the disc satisfy the standards? Is the disc distorted or scratched? Is the unit located near excessive vibrations? Is the disc very dirty? Has condensation formed inside the unit?
Remote control
Symptom The remote control does not operate. Possible cause Is the AC power cord of the unit plugged in? Is the battery polarity respected? Are the batteries dead? Is the distance or angle incorrect? Does the remote control sensor receive strong light?
Tuner
Symptom Radio makes unusual noise consecutively. Possible cause Is the unit placed near the TV or computer? Is the FM/AM loop antenna placed properly? Move the AC power cord away from the antenna if located near.
Condensation
Sudden temperature changes, storage or operation in an extremely humid environment may cause condensation inside the cabinet (CD pickup, tape heads, etc.) or on the transmitter on the remote control. Condensation can cause the unit to malfunction. If this happens, leave the power on with no disc (or cassette) in the unit until normal playback is possible (about 1 hour). Wipe off any condensation on the transmitter with a soft cloth before operating the unit.
Troubleshooting Chart
If trouble occurs
When this product is subjected to strong external interference (mechanical shock, excessive static electricity, abnormal supply voltage due to lightning, etc.) or if it is operated incorrectly, it may malfunction. If such a problem occurs, do the following: 1 Set the unit to the stand-by mode and turn the power on again. 2 If the unit is not restored in step 1, unplug and plug in the unit, and then turn the power on. 3 If neither step 1 nor 2 restores the unit, do the following: Press the ON/STAND-BY button to enter the power stand-by mode. While pressing down the / button and the X-BASS/DEMO button, press the ON/STAND-BY button until "CLEAR AL" appears.
Remote Control
Test of the remote control
Face the remote control directly to the remote sensor on the unit. The remote control can be used within the range shown below:
Press the ON/STAND-BY button. Does the power turn on? Now, you can enjoy the music.
Remote sensor
Caution:
This operation will erase all data stored in memory including clock, timer settings, tuner preset, and CD program.
8" - 20' (0.2 m - 6 m)
Before transporting the unit
1 2 3 4 5 Press the ON/STAND-BY button to turn the power on. Press the CD button. Press the OPEN/CLOSE button to open the disc tray. Remove all CDs inserted in the unit. Press the OPEN/CLOSE button to close the disc tray. Make sure that "NO DISC" is displayed. Press the ON/STAND-BY button to enter the stand-by mode, and then unplug the AC power cord from the AC outlet.
6
1
Right speaker Left speaker
Accessories Accesorios
Altavoz derecho Altavoz izquierdo
3
System Connections Conexiones del sistema
Remote control × 1 Controlador remoto × 1 FM/AM loop antenna × 1 Antena de cuadro de FM/AM × 1
FM antenna Antena de FM
1 2
Batteries are not included. Las pilas no están incluidas.
Battery Installation of the Remote Control Instalación de las pilas del controlador remoto
Red Rojo Black Negro
AM loop antenna Antena de cuadro de AM
Use 2 "AA" size batteries (UM/SUM-3, R6, HP-7 or similar). Use dos pilas del tamańo "AA" (UM/SUM-3, R6, HP-7 o equivalentes).
1
Replace the cover.
Remove the battery cover. Extraiga la cubierta de las pilas.
2
Vuelva a colocar la cubierta.
Insert the batteries as shown. Inserte las pilas como se muestra.
3
7
Left speaker Altavoz izquierdo Right speaker
Altavoz derecho AC outlet (AC 120 V, 60 Hz) A un tomacorriente de CA (120 V de CA, 60 Hz)
TV TV
RCA cord (not supplied) Cable RCA (no suministrado)
CD-BA250/CD-BA2600
To the line output jack A la toma de salida de línea
VCR Videograbadora
4
1
2
Press the TUNER (BAND) button repeatedly to select the desired frequency band (FM or AM). Pulse repetidamente el botón TUNER (BAND) para seleccionar la banda de frecuencia deseada (FM o AM). Press the TUNING/TIME ( or ) button to tune in to the desired station. When the TUNING/TIME button is pressed for more than 0.5 seconds, scanning will start automatically and the tuner will stop at the first receivable broadcast station. Pulse el botón TUNING/TIME ( o ) para sintonizar la emisora deseada. Cuando se pulse el botón TUNING/TIME durante más de 0,5 segundos, la exploración se iniciará automáticamente y el sintonizador se parará en la primera emisora difusora que pueda recibirse.
Turning on Your System Conexión de la alimentación de su sistema
Listening to the Radio Audición de la radio
The first time the unit is plugged, the unit will enter the demonstration mode. You will see words scroll.
1
CD-BA250/CD-BA2600
Cuando se enchufe por primera vez el aparato, se establecerá en el modo de demostración. Verá un desplazamiento de palabras.
Press the X-BASS/DEMO button to cancel the demonstration mode. Pulse el botón X-BASS/DEMO para cancelar el modo de demostración. Press the ON/ STAND-BY button to turn the power on. Pulse el botón ON/ STAND-BY para conectar la alimentación.
2
Listening to a CD (CDs) Audición de un disco CD (discos CD)
Press the CD button. Pulse el botón CD. Press the OPEN/CLOSE button to open the disc tray.
FM stereo receiving indicator Indicador de recepción de FM en estéreo
FM stereo mode indicator Indicador del modo de FM en estéreo
5" (12 cm) 12 cm
1
Pulse el botón OPEN/CLOSE para abrir la bandeja de discos.
2
To receive an FM stereo transmission: Press the TUNER (BAND) button to display the "ST" indicator. q " " will appear when an FM broadcast is in stereo. Para recibir una transmisión de FM en estéreo: Pulse el botón TUNER (BAND) para que se encienda el indicador "ST". q " " aparecerá cuando una difusión de FM sea en estéreo.
8
Place the CD(s) on the disc tray, label side up. When loading a third disc, press the DISC SKIP button to turn the disc tray, then place the CD in the open position. Coloque el disco compacto en la bandeja de discos, con el lado de la etiqueta hacia arriba. Cuando ponga un tercer disco, pulse el botón DISC SKIP para girar la bandeja de discos, y coloque el disco compacto en la posición abierta. Press the OPEN/CLOSE button to close the disc tray. Pulse el botón OPEN/CLOSE para cerrar la bandeja de discos. To select the CD you want to listen to first, press one of 1 - 3 buttons on the remote control.
3" (8 cm) 8 cm
3
Listening to a Cassette Tape (TAPE 1 or TAPE 2) Audición de una cinta de cassette (TAPE 1 o TAPE 2)
1 2
Open the cassette door by pushing the area marked " PUSH EJECT". Abra la puerta del cassette pulsando la parte marcada " PUSH EJECT".
4
Load a cassette into the TAPE 1 or TAPE 2 cassette compartment with the side to be played facing toward you. Cargue un cassette en el compartimiento de cassette de TAPE 1 o de TAPE 2 con la cara a reproducirse encarada hacia usted.
5
3
TAPE 1 TAPE 2
Para seleccionar el disco CD que desee escuchar primero, pulse uno de los botones 1 - 3 del controlador remoto.
Press the button to start playback.
Press the TAPE (1 2) button to select the cassette you want to listen to. Pulse el botón TAPE (1 2) para seleccěonar el cassette que desee escuchar.
6
Pulse el botón reproducción.
4
para iniciar la
Press the button to start playback. Pulse el botón para iniciar la reproducción.
CD-BA250/CD-BA2600
DISASSEMBLY
Caution on Disassembly Follow the below-mentioned notes when disassembling the unit and reassembling it, to keep it safe and ensure excellent performance: 1. Take cassette tape and compact disc out of the unit. 2. Be sure to remove the power supply plug from the wall outlet before starting to disassemble the unit. 3. Take off nylon bands or wire holders where they need to be removed when disassembling the unit. After servicing the unit, be sure to rearrange the leads where they were before disassembling. 4. Take sufficient care on static electricity of integrated circuits and other circuits when servicing. CD-BA250/CD-BA2600
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) x8 1. Turn on the power supply, open the disc tray, take out the CD tray cover, and close. (Note 1) 2. Screw ..................... (C1) x1 3. Hook ....................... (C2) x3 4. Hook ....................... (C3) x2 5. Socket .................... (C4) x2 1. Screw ..................... (D1) x9 2. Socket .................... (D2) x1 1. Screw ..................... 2. Socket .................... 3. Flat Cable .............. 4. Flat Wire ................. (E1) x3 (E2) x3 (E3) x1 (E4) x1 FIGURE 9-1 9-1 9-2
CD-BA250/CD-BA2600
(A1)x2 ř3x12mm Top Cabinet
Side Panel (Right) (B1)x2 ř3x10mm (A1)x2 ř3x12mm Side Panel (Left) (B1)x4 ř3x10mm Rear Panel (B1)x2 ř3x10mm
Figure 9-1
CD Servo PWB (C4)x2 1 CD Tray Cover (C2) x3
4 5
Rear Panel with Fan Motor Main PWB
9-2 9-2 10-2
(C3) x1 Pull 1 2
6 7 8 9 10 11
Front Panel Display PWB
1. Screw ..................... (F1) x2 1. Screw ..................... (G1) x11 2. Flat Cable .............. (G2) x1
10-2 10-3 10-3 10-3 10-4 9-3 10-1 10-5
(D2)x1 Main PWB (D1)x7 ř3x10mm (D1)x2 ř3x10mm (C1)x1 ř3x10mm Rear Panel
CD Player Unit (C3)x1
Tape Mechanism 1. Open the cassette holder. 2. Screw...................... (H1) x5 Headphones PWB 1. Screw ..................... (J1) x1 Turntable Disc Tray 1. Hook ....................... (K1) x2 2. Cover ..................... (K2) x1 1. Turn fully the lock lever in the arrow direction. 2. While holding the lock lever,rotate the cam gear until the cam gear rib engages with the clamp lever. 3. Push the slide holder backward to engage the claw with the groove and remove it in the direction of the arrow. ............... (L1) x6 1. Screw ..................... (M1) x1 2. Hook ....................... (M2) x2 3. Socket .................... (M3) x4 1. Hook ....................... (N1) x2 2. Hook ....................... (N2) x3
(E1)x1 ř3x10mm Lug Wire
Figure 9-2
12
CD Servo PWB (Note 2) CD Mechanism
10-6
Lock Lever
13 14
11-1 11-1
Loading Motor PWB 1. Hook ....................... (P1) x5
CD Player Unit (Bottom View)
Note 1: How to open the changer manually. (Fig. 9-3) 1. In this state, turn fully the lock lever in the arrow direction through the hole on the loading chassis bottom. 2. While holding the lock lever, rotate the cam gear anticlockwise until the cam gear rib engages with the clamp lever. (Fig. 10-1) 3. After that, push forward the CD slide holder.
Figure9-3
Note 2: 1. After removing the connector for the optical pickup from the connector, wrap the conductive aluminium foil around the front end of the connector so as to protect the optical pickup from electrostatic damage. Note 3: 1. Be careful not to break the claw of the CD mechanism. 2. When fining back the cam gear assembly, let it lock by front movement.
9
CD-BA250/CD-BA2600
(K2)x1
Clamp Lever
Turntable
CD Player Unit (Top View)
Cam Gear Rib
Slide Chassis (K1)x2
Figure 10-1
(E2)x2 (E4)x1
CD Player Unit
(E1)x2 ř3x10mm Power PWB (E3)x1 Powertransformer PWB (E2)x1
Headphones PWB
Figure 10-4
(L1)x3 3
2
(F1)x2 ř3x8mm Main PWB
1 (L1)x3
Figure 10-2
(G2)x1
Figure 10-5
Display PWB (G1)x11 ř3x10mm Tape Mechanism (H1)x5 ř3x10mm Open Cassette Holder (J1)x1 ř3x10mm Headphones PWB
(M1)x1 ř3x8mm (M3)x2 (M2)x2
CD Video PWB
Slide Chassis
(M3)x2
Figure 10-3 10
Figure 10-6
CD-BA250/CD-BA2600
CD Mechanism (N2)x3
(N1)x1
(N1)x1
Loading Motor PWB
(P1)x5
Figure 11-1
CP-BA250/CP-BA2600
STEP 1 2 3 REMOVAL Front Panel Woofer Tweeter PROCEDURE 1. Net ......................... (A1) x1 1. Screw .................... (B1) x4 1. Screw .................... (C1) x2 FIGURE 11-2 11-3 11-3
(C1)x2 ř3x10mm
Front Panel (A1)x1 Screwdriver
(B1)x4 ř4x12mm
Tweeter
Woofer
Speaker Boox
Driver should be pried away from Speaker Box.
Figure 11-2
Figure 11-3
11
CD-BA250/CD-BA2600
REMOVING AND REINSTALLING THE MAIN PARTS
TAPE MECHANISM SECTION
Perform steps 1 to 6 and 8 of the disassembly method to remove the tape mechanism.
TAPE 2 Record/Playback Head
How to remove the record/playback and erase heads (TAPE 2) (See Fig. 12-1)
1. When you remove the screws (A1) x 2 pcs., the recording/ playback head and three-dimensional head of the erasing head can be removed.
Erase Head
How to remove the playback head (TAPE 1) (See Fig. 12-2)
1. When you remove the screws (B1) x 2 pcs., the playback head.
(A1)x2 Ř2 x 9mm
Figure 12-1
TAPE 1
How to remove the pinch roller (TAPE 1/2) (See Fig. 12-3)
1. Carefully bend the pinch roller pawl in the direction of the arrow , and remove the pinch roller (C1) x 1 pc., in the direction of the arrow . Note: When installing the pinch roller, pay attention to the spring mounting position.
Playback Head
How to remove the belt (TAPE 2) (See Fig. 12-4)
1. Remove the main belt (D1) x 1 pc., from the motor side. 2. Remove the FF/REW belt (D2) x 1 pc.
(B1)x2 Ř2 x 9mm
Figure 12-2
How to remove the belt (TAPE 1) (See Fig. 12-4)
1. Remove the main belt (E1) x 1 pc., from the motor side. 2. Remove the FF/REW belt (E2) x 1 pc.
How to remove the motor (See Fig. 12-5)
1. Remove the screws (F1) x 2 pcs., to remove the motor.
Pinch Roller Pawl
Pinch Roller (C1)x1 Pull
Figure 12-3
Motor
TAPE 2 FF/REW Belt (D2)x1 Motor TAPE 2 Main Belt (D1)x1 Motor TAPE 1 Main Belt (E1)x1
(F1) x2
Ř 2.6 x 5mm
TAPE 1 Main Belt (D1)x1 FF/REW Belt (E2)x1
Figure 12-5 12
Figure 12-4
CD-BA250/CD-BA2600 CD MECHANISM SECTION
Perform steps 1, 2, 3, 10,11,12 and 13 of the disassembly method to remove the CD mechanism.
CD Player Chassis (A1)x2
Loading Motor
How to remove the loading motor (See Fig. 13-1)
1. Bend the hooks (A1) x 5 pcs., to remove the loading motor. 2. Remove the drive belt (A2) x 1pc.
(A1)x1 (A1)x2
Loading Pulley Motor Drive Belt (A2) x1
Figure 13-1
How to remove the pickup (See Fig. 13-2)
1. Remove the stop washer (B1) x 1 pc., to remove the gear (B2). 2. Remove the screws (B3) x 2 pcs., to remove the shaft (B4). 3. Remove the pickup. Note After removing the connector for the optical pickup from the connector wrap the conductive aluminium foil around the front end of connector so as to protect the optical pickup from electrostatic damage.
Stop Washer (B1) x2 (B3) x1 ř2.6 x6mm
Pickup Shaft (B2) x1 CD Mechanism Gear (B4) x1
Figure 13-2
ADJUSTMENT
MECHANISM SECTION
· Driving Force Check
Torque Meter Play: TW-2111 Specified Value Tape 1: Over 80 g Tape 2: Over 80 g Normal speed MTT-111
· Tape Speed
Test Tape Adjusting Point Variable Resistor in motor. Specified Value 3,000 ± 30 Hz Instrument Connection Speaker terminal (Load resistance: 6 ohms)
· Torque Check
Torque Meter Specified Value Tape 1 Play: TW-2111 Fast forward: TW-2231 Rewind: TW-2231 30 to 80 g.cm -- -- Tape 2 30 to 80 g.cm 70 to 180 g.cm 70 to 180 g.cm
TAPE MECHANISM
Tape Motor
Variable Resistor in motor
Figure 13-3 13
CD-BA250/CD-BA2600 TUNER SECTION
fL: Low-range frequency fH: High-range frequency · AM IF/RF Signal generator: 400 Hz, 30%, AM modulated
Test Stage Frequency Frequency Display 1,720 kHz 530 kHz 990 kHz Setting/ Instrument Adjusting Connection Parts T351 *1 (fL): T306 *2 1.1 ± 0.1 V (fL): T303 *1
CNP301 FM/AM LOOP ANTENNA
· FM RF Signal generator: 1 kHz, 75 kHz dev., FM modulated
Test Stage Frequency Frequency Display FM Band Coverage FM RF -- 87.50 MHz Setting/ Adjusting Point Instrument Connection
T301(fL): *1 1.3 V ± 50 mV L312 *2
AM IF AM Band Coverage
450 kHz --
98.00 MHz 98.00 MHz (10-30 dB)
*1. Input: Antenna *2. Input: Antenna
Output: TP301 Output: Speaker terminal
AM Tracking 990 kHz
*1. Input: Antenna *2. Input: Antenna
Output: TP302 Output: TP301
MAIN PWB
T303 IC301 R316 T302 TP301 FM IF T301 T351 AM IF FM RF L312
AM TRACKING fL AM BAND COVERAGE fL T306
FM BAND COVERAGE fL
TP302 R357
Figure 14-1 ADJUSTMENT POINTS
CD SECTION
· Adjustment Since this CD system incorporates the following automatic adjustment functions, readjustment is not needed when replacing the pickup. Therefore, different PWBs and pickups can be combined freely. Each time a disc is changed, these adjustments are performed automatically. Therefore, playback of each disc can be performed under optimum conditions. Items adjusted automatically (1) Offset adjustment (The offset voltage between the head amplifier output and the VREF reference voltage is compensated inside the IC.) * Focus offset adjustment * Tracking offset adjustment (2) Tracking balance adjustment (waveform drawing Fig.14-2 EFBL) (3) Gain adjustment (The gain is compensated inside the IC so that the loop gain at the gain crossover frequency will be 0 dB.) * Focus gain adjustment * Tracking gain adjustment
CD ERROR CODE DESCRIPTION
Error 0001 0002 0101 0103 0201 0203 0302 0306 0307 0308 State Code [Servo System Error] Cannot detect Pickup-in SW DSP access error [Error during close operation] Open/Close SW not functioning (Low High) Open/Close SW not functioning (High Low) [Error during open operation] Open/Close SW not functioning (Low High) Open/Close SW not functioning (High Low) [Error during skip operation] Pickup-in SW is not detected During Disc 1 search, Open/Close SW or Clamp SW or Disc SW do not change to low. Clamp SW not function (Low High) Clamp SW not function (High Low)
T Stopped CH1=500mV DC 10:1
CH2=200mV DC 10:1
CH3=1V DC 10:1
1999/04/05 20:26:47 500ms/div (500ms/div) NORM:20kS/s
T 1
FDO
TE
3
EFBL
2
CH2 v/DIV 200mV =Filter= Smoothing : ON BW : FULL =Offset= CH1 : 0.000V CH2 : 0.000V CH3 : 0.00V CH4 : 0.00V =Record Length= Main : 100K Zoom : 2k =Trigger= Mode : SINGLE Type : EDGE CH1 Delay : 0.0ns Hold off : 0.2µs
Figure 14-2 14
CD-BA250/CD-BA2600 TEST MODE
·Setting the test mode Any one of test mode can be set by pressing several keys as follows. + + TEST:CD operation test Function:-CD test mode. -Enter test mode.
C D
T E S T
IL isn't done OPEN/CLOSE operation is using manual.
<<
>>, <<
>> buttons make pick's slide possible.
<> key input.
<> key input.
Do TOC IL. Do normal play When these following key is input into PLAY key, track number can be appoint directly <> key input
Laser ON.
<> key input.
Tracking OFF play at that specific point.
Adjustment result automatically will display as below for each 2 sec : a) "FOFF_XX" b) "TOFF_XX" c) "TBAL_XX" d) "TGAN_XX" f) "FGAN_XX" g) "RFLS_XX"
<> key input.
<< << <<
1>> key: Track 4 2>> key: Track 9 3>> key: Track 15
Tracking ON play from that specific point. Adjustment result automatically will display as below for each 2 sec : a) "FOFF_XX" b) "TOFF_XX" c) "TBAL_XX" d) "TGAN_XX" f) "FGAN_XX" g) "RFLS_XX"
explanation: a) Focus off set b) Tracking off set c) Tracking balance d) Tracking gain f) Focus Gain g) RF level shift VOL -- Last memory BAL -- CENTER P.GEQ -- FLAT X-BASS -- OFF To cancel : Power OFF
="FOFF_XX" ="TOFF_XX" ="TBAL_XX" ="TGAN_XX" ="FGAN_XX" ="RFLS_XX"
<> key input.
<> key input.
STOP XX: Hex value
STOP
Sliding the PICKUP with << >>, << >> button must only be in STOP mode.
15
CD-BA250/CD-BA2600 Standard Specification of Stereo System Error MessageDisplay Contents
Error Contents Output while Device Protection Operation DISPLAY 'PROTECT' Notes 00: While in Protect Circuit Operate 01: Over Current Detection 02: DC Detection 03: TAPE Mechanism Error 'ER-TA**' 00: Tape Mechanism Error 01: Initial Error 02: 03: CD/VCD Pickup Mechanism Error 'ER-CD**' 00: Pickup Mechanism Error 01: PU-IN SW Detection NG 02: 03: 04: CD Changer Mechanism Error 'ER-CD**' 10: Changer Error 11: Initial Error 12: 13: Tray Error 'ET-CD**' 20: Tray Error 21: 22: 23: Focus Not Match IL Time Over TUN PLL Unlock 'NO DISC' 'NOT READ' 'ER-TU**' 00: TUN Error 01: PLL Unlock 02: 03:
16
CD-BA250/CD-BA2600
SW3 SW2 DISC CLAMP NUMBER SW1 OPEN/ CLOSE TO MAIN SECTION TO DISPLAY SECTION M3 T/T UP DOWN LOADING
M
1 2 3 4 5 6
OC. DISC NO
CLAMP SW
CD RES
1
2
3
4
5
6
DGND
AGND
WRQ
R-CH
DRF
L-CH
+5V
+5V
CLK
DO
CE
DI
CNP7
CNP8
1
2
3
4
5
6
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
Q3
42 43 44 45
25
70 71
CONT4
CONT3
61 CE 62 CLK 63 DI 64 DO 65 WRQ 66 RES
CONT2
LCHO
RCHO
LVSS
RVSS
75 69 57 56 55 51 50 40
IC1 LC78645E CD SERVO
XL1 33.8688MHz
48 XOUT
37 28 19 1 CONT5 26 SLDO 23 2 17 25 41 42 39 83
49 XIN
CNP4
CNS4
BI4
ADAVDD XVDD
SPDO 22
35
RFVDD
RVDD
VVDD
LVDD
FIN1
FIN2
TIN1
TIN2
LDD
LDS
FD0 21 TD0 20 +5V 18 40 24
5
7 18 47
41 46
7
8
9
10
79 80
+3.3V
23 82
IC2 VCC1 M63001FP VCC4 FOCUS/TRACKING/ VCC2 SPIN/SLED VCC3 DRIVER
4 5 6 7 15 16 26 27
29 22 21 14 8
Q2 CONSTANT VOLTAGE LASER DRIVER +3.3V Q1
+5V
PICK UP UNIT
TRACKING COIL
FOCUS COIL
M1 SPINDLE MOTOR
M M
SW1 PICK UP IN
M2 SLED MOTOR
Figure 17 BLOCK DIAGRAM (1/3) 17
CD-BA250/CD-BA2600
AM
FM CNP301 BF301 B.P.F
IC301 TA7358AP FM FRONT END
1 6 9 2 3 4 FM L312 RF 5 7 8
+B4
FM IF T302
10.7MHz CF303 450kHz
T351 CF352 CF351
X351 456kHz 17 13
FM/AM MO/ST VCO
L R
AM IF 1 2
AM MIX
FM OSC
4 5 9 8
FM/AM GND OUT AM IF FM+B FM MPXIN DET
T301 FM OSC OSC BUFF Q302
23
14 15
21
7
18
16
12
AM RF IN
AM OSC IN
STEREO
FM/AM
AM TRACKING T303 AM BAND T306 COVERAGE VT
IC303 LA1832S FM IF DET. FM MPX./ AM IF MPX.
CE DI CLK DO
X352 4.5MHZ
20
MO/ST
IC302 LC72131 PLL(TUNER)
+B4 +B
1
22 15 16 OSC
11
3 4 5 6
17 21
7 Q360 FM
9 10
FM
SWITCHING JK690 VIDEO/AUX IN L R BI601 CNP7 FROM CD SECTION 1 2 3 +B4 AUX L 9 R 16 TAPE L 10 R 15 L 11 TUNER R 14 CD L 12 R 13
+B4 23
IC601 LC75341 AUDIO PROCESSOR
7 8 1718 3
DI 1 CE 2 CLK 24
21 R
20dB ATT Q601 4 L Q602
L-CH TAPE 1 PB HEAD R-CH
REC SWITCHING P.B. Q103L-CH TAPE 2 R-CH Q104 REC PB HEAD POP REDUCE 6 T1/T2 AC BIAS L REC 9 REC R REC 16 REF 14
L(T1) 1 R(T1) 24 L(T2) 2 R(T2) 23 L NF 3 R NF 22
P.B
13
4 L PB 21 R 5
20
Q107 Q108 MUTING
REC/PLA
+B4
8 4
IC561 1 IC562 7
H/N
7 L REC
18 R
8 L NF
17 R NF
NOR/ 12 HIGH T1/T2 10 ALC 19 15
IC101 AN7345K PLAYBACK AND RECORD /PLAYBACK AMP.
B2
IC561,IC562 KIA4558P OPE AMP.
T
SWITCHING SWITCHING Q105 Q114 Q106 Q112 ERASE HEAD BIAS Q111 SWITCHING OSC L103 Q113 BIAS SWITCHING Q110 Q109
Figure 18 BLOCK DIAGRAM (2/3) 18
CD-BA250/CD-BA2600
+B4
FL701 FL DISPLAY
1 2 3 6 13
14 16 23 31 32 44 47 48 49
Q701-Q703
+B5
67
57 56 55 54 53 52 51 50 49 48
46 45 44 43 42
40 39
78 80 79 VLOAD 81 89 90
RX701 REMOTE 1 SENSOR 3 2
VDD
IC701 IX0399AW(1/2) SYSTEM MICROCOMPUTER
RESET VDD
+B5
36 35 +B5 AVDD 34 33
92
VDD
93 100
1 2 4 5 6 7 8 9 1 0 11 12 13 16 1 7 20 21 23 22 24 +B5
+B5
CE CLK DI DO
XL700 4.194304MHz Q709 SP. DET. Q907 Q908
+B5
0dB TT Q601 Q602 L 1 R 15 8 REC/PLAY
+B4 -B1
Vcc
Q902 Q903 Q905 Q904 7 L-OUT 10 R-OUT 13
B2
+Vcc
9
IC901 STK4029S POWER AMP.
D901
PT801 POWER TRANSFORMER F901 4A/125V F902 4A/125V
8
IC701 IX0399AW (2/2)
561 1 562 7 61,IC562 A4558P PE AMP.
+B1
28
29
VF2
M12 +B3 +B4 A+10V
IC902
KTC2026
D902~D905
VF1
IC903
KIA7810AP VOLTAGE REGULATOR VF T1/T2 UN-SW5V
+B5 +5V
F904 2A/125V F903 2A/125V AC POWER SUPPLY CORD T.F.
Q901
IC904
KIA7805AP CONSTANT VOLTAGE REGULATOR
BIAS
Figure 19 BLOCK DIAGRAM (3/3) 19
-
31
KEY SW701-SW703 SW712-SW718 SW720-SW727 SW729-SW732
TO CD SECTION
+B3
JK701 HEADPHONES
+B5
Q906 Q914
M
M901 FAN MOTOR
SO901 SPEAKER TERMINAL RL914
AC120V/60Hz
CD-BA250/CD-BA2600
A
PICKUP UNIT
CD SERVO PWB-C
CD SIGNAL
R7 47 VCC VREF E A B R4 F 12K C CNP1
CNS1B
B
C3 47/25
Q1 KTA1266 GR
CNS2B
TR+
D
FO+ FO TR
TR 1 TR+ 2 FO+ 3 FO 4 5 PD 6 VR 7 LD 8 GND
CNS2A
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
CNP2
TR TR+ FO+ FO GND PD VR LD
C1 47/25
C
C38 0.01
R13 1K
1 2 3 TP3 C7 4 100P 5 6 7 TP1 C50 8 22P TP2 9 (CH) 10 C10 11 10/50 C9 12 100/10 13 C11 0.22/50 14 15 4 16 C12 17 100P 18 19 20 R12 330 C8 0.0047
R1 12K
C6 0.1
C2 0.01
C4 0.001
C49 47/25
R11 10K
R2 12K
VCC VREF E A B F C
CNS1A
7 6 5 4 3 2 1
7 6 5 4 3 2 1
7 6 5 4 3 2 1
7 6 5 4 3 2 1
R6 33K R5 12K
R9 3.3
R3 33K
R10 27K
C5 0.047(ML)
2
C39 100/10
C40 220/6.3 VREF STANDBY VCC R44 12K SLDO R14
1
GND
CNS3B
SL
M1 SPINDLE MOTOR M2 SLED MOTOR SW4 PICKUP IN
M M
+ SPIN + SLIDE PU-IN
1 2 3 4 5 6
1 2 3 4 5 6
6 5 4 3 2 1
6 5 4 3 2 1
SP+ SP SL+ SL PUIN GND
CNP3
MUTE
21 20 19 18 17 16 15 14 13 12 11 10
9
8
7
6
5
4
3
IC2 M63001FP FOCUS/TRACKING/ SPIN/SLED DRIVER
F
VCC2
VCC3
G
C41 100/10
H
· NOTES ON SCHEMATIC DIAGRAM can be found on page 37.
1 2 3 4 5 6
Figure 20 SCHEMATIC DIAGRAM (1/9) 20
M+
VCC4
SPO
SP+
SP
M
22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 L
FD
E
FO+
FO
TR+
TR
SL+
CD MOTOR PWB-F
CNS3A
2
+ +
+ + + + + +
CD-BA250/CD-BA2600
C33 100P C30 100P
C34 100P C32 100P
3
C28 100P C27 0.022 R41 12K C37 0.1 R40 680 C36 2.2/50 C35 R39 0.047 680 (ML) LDD R42 LDS 1.2K R31 1K
R38 R37 R36 R35 R34 R33 R32
1K 1K 1K 1K 1K 1K 1K WRQ DRF CE DO DI CL CD RES CLAMP SW O/C, DISC NO CNP8 C51 0.022 1 2 3 4 5 6 7 8 9
R29 2.2K
C5 47(ML) R11 10K 1 2 2 3 4 C8 5 047 6 7 TP1 8 9 10 C10 11 10/50 12 13 C11 0.22/50 14 15 4 16 17 P 18 19 20 R13 1K
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 FR VVDD PCKIST VVSS PDO2 PDO1 CONT2 CONT3 VSS VDD5 DRF VRES VWRQ DO DI CL CE SLCO SLCIST LRSY EFMIN ASDFIN RF 5 8 ASDACK RFVDD 7 ASLRCK RSVSS IGMOUT FIN1 A EFLG FIN2 B C2F IC1 TIN1 E XVSS TIN2 F LC78645E VREF CD SERVO FSX/16MIN XIN REF1 XOUT FE TEC XVDD RVDD TE RCHO RFMON 6 RVSS JITTC LVSS ADAVDD LCHO ADAVSS TDO FDO 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 SBCK/FG DEFECT V/1P FSEQ MON11 MON12 MON13 MON14 MON15 VSS VDD DOUT TEST SPDO SLDO GPDAC CONT4 CONT5
12
11
R28 2.2K
CNS8 FROM DISPLAY PWB P27 8-A
2 1
C13 0.022
C14 100/10
R18 1K
60 DATA 59 DATACK 58 10 57 56 55 54 53 52 51 XL1 50 R43 33.8688MHz 49 100 48 47 R22 46 100 45 ZD1 DZ3.3BSB 44 C24 43 C17 10/50 42 0.022 R25 LVDD 41 2.2K C16 C44 330/6.3 C26 0.001 C23 10/50 0.0015 R24 R27 2.2K 10K C25 0.0015 R26 10K
R-CH AGND L-CH DGND +5V +5V CNP7
1 2 3 4 5 6
CNS601 FROM MAIN PWB P22 1-A
R14 1K R15 1K R16 1K R17 1K
L1 0.82µH
C48 0.022
FO+
4
3
2
1
R20 10K
9
Q2 KTC3203 Y R23 220 R47 100 BI4 1 2 3 R19 15K 4 5 6 1 2 3 4 5 6 CNS4 1 2 3 4 5 6 SW1 OPEN/CLOSE SW2 CLAMP SW3 DISC NO.
FD
TO
R46 470 D2 DS1SS133
2 3 1
R45 470 D1 DS1SS133 R30 8.2K
Q3 KRC102 M
M+
VCC4
39 40 41 42 LD_M+ LD_M
C18 100/10
ZD2 DZ3.9BSB
M
R49 1
M3 T/T UP DOWN LOADING
CNP4
CD LOADING MOTOR PWB-E
· The numbers 1 to 12 are waveform numbers shown in page 38.
7 8 9 10 11 12
Figure 21 SCHEMATIC DIAGRAM (2/9) 21
CD-BA250/CD-BA2600
MAIN PWB-A1(1/3)
TO CD SERVO PWB P21 12-C
A
1 2 3 4 5 6 CNS601
1 2 3 4 5 6
R-CH A_GND L-CH CD_GND CD_+B A_+B BI601 R612 390 R604 C610 10K 1/50
R601 1K R602 1K
IC601 LC75341 AUDIO PROCESSOR
1 + DI 2 CE 3 VSS C608 0.1 (ML) R606 3.9K C612 0.0027 C616 4.7/50 C620 1/50 C622 1/50 R608 1.2K C626 0.0056 4 LOUT LBASS 5 C606 LTRE 0.15 6 C614 1/50 LIN 7 8 LSEL0 C618 1/50 9 L4
10 11 12
CLK CCB INTERFACE +
24
VDD 23 VREF 22 ROUT +
21
+B C6 22 C
+
1 2 3 4 5 6 7
TO POWER SECTION P24 1-G
R614 3.3K
(A_+B) SW_5V CD_+B SW_5V GND
+B +B
Q602 KTC3199 GR R610 2.2K C636 0.001 C635 0.001 R611 2.2K R613 390
RBASS 20 RTRE RIN RSEL0 AUX DECK TUNER CD + + R4 + +
19 18 17 16
R615 3.3K Q601 KTC3199 GR
L-CH GND R-CH GND M_+12V A+10V GND GND SP_DET SP_RLY SW_5V UN_SW_5V VP +B +B +B +B R619 330 R618 330
C601 220/16 C60 0.1 C 1 C 4. C 1 C 1 C 1 C623 1/50 -B REC R138 10K Q KTC3 C132 47/25 R134 10K ALC NOR/CRO2 ALC RIPPLE
11
B
CNP7
L3 L2 L1
8 9 10 11 12 13 14 15 17 18 19 20 21
R3 15 R2 14 R1 13
C624 1/50
VF1 P_IN 15V -B +B
C639 1/50
C
VF2
R621 22K
+B
+B -B
D
C136 0.022
+B R147 10K Q113 KRC104 M R149 150 L R R137 220K C150 10/50 R139 10K Q107 KTC3199 GR R131 1.5K R133 100 C129 0.0033 C123 270P C125 22/50
21 20 19 18 17 16 15 14
3 1
R146 10K
R148 4.7K
1 2 3
Q114 KRC104 M R115 56 C111 100/25 C113 0.033 R117 100K R113 1K R C107 330P 24 R121 33K R111 15K R101 1K
Q112 KTA1266 GR TAPE1 PLAYBACK HEAD R-CH 3 2 1 1 2 3 T1_R A_GND T1_L CNP101 C102 560P Q101 2SCC1845 F C101 560P
C141 100/16
2
R125 68K R127 3.9K
L-CH
C119 0.0022
R102 1K Q105 C105 KTC3199 GR 560P R107 47K
R119 3.9K C109 330P
C103 180P ERASE HEAD L-CH R-CH 6 5 4 3 2 1 1 2 3 4 5 6 7 M_GND ERASE T2_R2 A_GND T2_R1 T2_L1 T2_L2 CNP102 Q104 2SCC1845 F C104 180P
R103 2.2K R105 3.3K Q103 2SCC1845 F
23
22
C122 3.3/50
R110 4.7K
R118 100K C114 0.033 C112 100/25 R116 56
C106 560P
C120 0.0022
Q102 2SCC1845 F
R112
15K
G
IC101 AN7345K PLAYBACK AND RECORD/ PLAYBACK AMP.
H
· NOTES ON SCHEMATIC DIAGRAM can be found on page 37.
1 2 3 4 5 6
Figure 22 SCHEMATIC DIAGRAM (3/9) 22
R126 3.9K R130 1.5K
R108 47K
R122 33K
R106 3.3K R104 2.2K
C116 C118 560P 47/25
C128 0.022 C130 0.0033
R120 3.9K R124 5.6K
C124 270P
R132 100
F
Q106 KTC3199 GR
TAPE2 RECORD/ PLAYBACK HEAD
C121 0.022
R128 6.8K
L C108 330P R114 1K
1
2
+ 112K Hich=T1 + 112K 3 4
R129 6.8K
C117 47/25
5
6
7
+ 56K Hich=CHROME + 56K 9 10 8 C126 22/50
R109 4.7K
C110 330P
C131 47/25 C133 22/50 C134 220/10
C127 0.022
E
C115 R123 560P 5.6K
R135 10K
CD-BA250/CD-BA2600
RECORD SIGNAL CD SIGNAL
C601 75341 ROCESSOR
CLK CB FACE +
24
FM SIGNAL PLAYBACK SIGNAL VIDEO SIGNAL
C601 220/16
R603 1K +B
VDD 23 VREF 22 ROUT
+
21
+B C603 22/50 C607 0.1
+
C609 R605 1/50 10K R607 3.9K C611 0.0027
RBASS 20 RTRE RIN RSEL0 AUX ECK UNER CD
+ +
19 18 17 16
C605 0.1 C613 1/50 C615 4.7/50 C617 1/50 C619 1/50 C621 1/50 C623 1/50
R4
R3 15 R2 14 R1 13
+B R609 1.2K TUN_SM C625 0.0056 CE DO DI CLK D_GND
CNP701
FFC701 1 1 2 3 4 5 6
T_BIAS 7 T_T1/T2 8 REC/PLAY +B +B SMUTE SPA_SIG A_GND
12
9
10
+B -B R623 220K R622 220K
+B -B
M_+12V 15V 20dB M_GND
13 14 15 16 17
+B +B
SW_5V
18 19
+B UN_SW 5V SP_DET SP_RLY
20 21 22 23 24 24
R136 220K
R137 220K
10/50
REC_R R139 10K R138 10K Q108 KTC3199 GR
VF1 VF VF2 P_IN
Q107 KTC3199 GR
R131 1.5K R133 100 C129 0.0033
3.9K
C123 270P
C131 47/25 C133 22/50 C134 220/10 C135 0.022
C127 0.022
R135 10K
TUN_SM
6.8K
22 23 24 25 26 27 28 29 30 31 L-CH JK690 VIDEO/AUX IN R-CH
TO TUNER SECTION P28 1-G
1 2
R158 220 +B
R140 47K Q109 KTA1266 GR
DO
C125 22/50
18 17 16 15 14 13
3
CE CLK DI TUN_R (A_GND)GND TUN_L +B +B A+10V
Q110 KRC104 M
R141 4.7K
IC101 AN7345K
7
+ 56K Hich=CHROME + 56K 9 10 8 C126 22/50
ALC NOR/CRO2 ALC RIPPLE
11
12
GND VCC
R128 6.8K
(D_GND)GND
R142 82
C124 270P
R132 100
C132 47/25
R692 33K
R145 Q111 4.7 KTC3203 Y
C137 0.047 R144 R143 (ML) 22K 47K
C128 0.022 C130 0.0033
R690 6.8K R691 6.8K
C690 390P C691 390P R693 33K D690 DS1SS133
R126 3.9K R130 1.5K
R134 10K
C138 0.0082 (PP)
C139 0.039(ML)
C140 47/25
L103 330µH
D691 DS1SS133 C693 0.001
CHASSIS
K RECORD/ AMP.
7
8
9
10
11
12
Figure 23 SCHEMATIC DIAGRAM (4/9) 23
CNS701
11
TO DISPLAY PWB P27 12-C
CD-BA250/CD-BA2600
IC901 STK4029S POWER AMP.
+VCC VCC CH1 OUT CH2 OUT 4 R942 22K C940 100/50 5 6 7 8 9 10 11 R945 0.22(2W) 12
L-CH + CH1 3
R-CH 14 C939 150P C941 100/50 15 R941 C937 1K 15P R937 820 R939 56K C935 4.7/50 D913 DS1SS133 Q904 KTC3199 GR R956 56K R955 56K Q905 KTC3199 GR C953 0.047 (ML) R959 4.7 C952 0.047 (ML) R958 4.7 R935 1K C933 0.001 C949 47/50 R957 56K
+ +B
CH2 13
A
1
2
R934 1K R938 56K
R944 100 R936 R940 1K 820 C934 4.7/50 R950 0.1(1W) C948 0.022 R954 1.5K Q902 KTC3199 GR R952 1K
C946 C945 10/50 10/50
R949 0.1(1W) D911 DS1SS133 R951 1K Q903 KTC3199 GR
+B
B
D912 DS1SS133
C932 0.001 R932 56K C930 0.22/50
C947 0.022 R953 1.5K
R931 100K
C
+B
C931 0.22/50
R933 56K
R930 100K
1 2
+B
3
R943 100
1 2
C938 150P C936 15P
C942 0.22
R946 0.22 (2W)
R947 0.22(2W)
R948 0.22 (2W)
Q907 KRC107 M
C969 3.3/50
Q908 KRA107 M
D
-B +B
ZD904 DZ130BSB
IC902 KTC2026
C916 22/50 ZD905 DZ2.4BSB R908 560 R975 8.2 C915 0.022
+
3
R903 3.3K R902 R901 22K 22K
C903 2200/63
BI902
+B
R909 22K
+B2
+B
C904 2200/63
E
2
IC903 KIA7810AP
C920 47/25
1 2 4 3
A_+B CD_+B L-CH GND(A_GND) R-CH P_IN GND(CD_GND) A+10V VP VF2 VF1 SP_RLY M_+12V 15V GND(D_GND) SW_5V GND(A_GND) UN_SW_5V SP_DET GND(M_GND)
+B -B +B +B +B +B +B -B
+B
C918 0.1 (ML)
+B
IC904 KIA7805AP
2 D916 DS1SS133 C921 0.1 (ML) C970 6800/16 3 1
F
TO MAIN SECTION P22 1-B
6 20 7 9 17 18 19 13 8
IC904 KIA7805AP CONSTANT VOLTAGE REGULATOR
G
21 5 14 10 15 12 11
+B
H
· NOTES ON SCHEMATIC DIAGRAM can be found on page 37.
1 2 3 4 5 6
Figure 24 SCHEMATIC DIAGRAM (5/9) 24
C923 47/25
C907 4700/16
IC903 KIA7810AP VOLTAGE REGULATOR
3
1
R976 8.2
CD-BA250/CD-BA2600
FM SIGNAL
+B +B
MAIN PWB-A1 (2/3)
CNS971 R969 4.7 D915 DS1SS133 R972 15K C968 10/50 C967 47/50 R970 1K + CNP981 2 1 Q906 KTC3203 Y CNP971 2 1
M
M901 FAN MOTOR
R988 R981 R986 R982
680 680 680 680 R968 4.7K R967 4.7K
R971 68K
+B
HEADPHONES PWB-B2
C735 220P
1
1 2 3 4 5
R1_OUT
L1_OUT
RL914 RELAY D914 DS1SS133
5
FW981
C734 JK701 220P HEADPHONES
C952 0.047 (ML) R958 4.7
Q914 KTC3199 GR R973 47K
+B
L921
SO901 SPEAKER TERMINAL SP_LCH SP_RCH
L920
+B
6 OHMS MIN
SP_LCH_GND SP_RCH_GND
BI902 1 2 3 4 5 6 7 8 9
10
CNS902 1 2 3 4 5 6 7 8 9
10
CNP902 1 2 3 4 5 6 7 8 9
10
C901 0.1 (ML) C902 0.1 (ML) D901 TS6B04GM D905 D902 DS1N4004S DS1N4004S C905 0.1 (ML) C906 0.1 (ML) D903 DS1N4004S R984 ZD902 47K DZ110BSB C912 47/50 C911 47/50 R905 47K ZD901
F901 4A/125V F902 4A/125V
+B2
DS1N4004S
D904
R983 220K
F904 2A/125V F903 2A/125V
DZ330BSD C910 220/50 C909 100/50 D906 DS1N4004S
AC POWER SUPPLY CORD AC120V/60Hz
D907 C908 DS1N4004S 100/50
C913 100/35
R907 12K
R978 47
T.F.
R977 47
D908 ZD903 R906 Q901 R904 DZ6.2BSA 10 KTA1274 Y2.2K DS1N4004S
PT801 POWER TRANSFORMER
TRANSFORMER PWB-A3
POWER PWB-A2
7
8
9
10
11
12
Figure 25 SCHEMATIC DIAGRAM (6/9) 25
CD-BA250/CD-BA2600
A
DISPLAY PWB-B1
FL701 FL DISPLAY
49 48 47 44 43 42 41 40 39 38 37 36 35 34 33 32 P22 F P21 F P20 F P19 P18 P17 P16 P15 P14 P13 P12 P11 P10 31 30 29 28 27 26 25 24 23 16 P09 P08 P07 P06 P05 P04 P03 P02 P01 G11
81 82 83 84 85 86 87 88 89 90 80 79 VLOAD 78 P11 77 P12 76 P13 75 P14 74 P15 73 P16 72 P17 71 P18
Q703 KTC3199 GR R749 100K R747 1K
B
Q701 KTC3199 GR
Q702 KTC3199 GR
R746 1K
R750 100K
R748 1K
R751 100K
C706 47/50
C707 1/50
P10
C
R752 33 +B D703 DS1SS133
IC IX03 SY MICROC
70 P19/DIST0 69 P20/DIST1 68 P21/DIST2 67 P22/DIST3 66 RDS-READY/ESS_DO 65 RDS-RDCL/ESS_DI 64 RDS-RDDA/ESS_STB 63 RDS-RST/ESS_ACK 62 NO USE / MPEG_POW 61 KARAOKE LATCH 60 NO USE 59 DISTOUT/SW OUT
+B
R760 10K R758 10K R759 10K
SPK_ DET SP_ RLY AC RLY_CONT VDD
TIMER LED
D
+B +B +B
R756 10K +B
R735 1K 1K
+B R733 1K R731 10K R734 1K R732 1K
R728 2.2K
R729 2.2K
IC561 KIA4558P OPE AMP.
+B
+B
E
C572 0.022
F
FFC702 1 PLAY -
R562 R563 820K 270 R566 2 4 -B 220K R565 C562 1 3 33K 270P R568 220K C565 R567 5 8 0.0027 68K 6 7 R570 C564 R571 12K 390K 0.0027 D716 IC562 DS1SS133 KIA4558P C567 0.0068 C568 R574 OPE AMP. 0.0068 1M 4 -B 2 R573 R575 C570 1 3 56K 470K 0.022 R576 2.2M R577 5 8 150K 6 7 R579 C571 15K 0.022 R580 180K R561 10K C561 270P
-B D561 DS1SS133
-B
R761 1K
D562 DS1SS133
R572 100K C566 2.2/50 +B
+B
D563 DS1SS133 C573 0.022 +B R578 100K C569 2.2/50 Q706 KTA1273 Y R770 10K R772 10K
+B
+B
ZD561 DZ6.2BSB
M12V R777 10K +B R778 10K +B
SOLENOID CASSETTE
G
SOLENOID
TAPE MECHANISM PWB-D
H
· NOTES ON SCHEMATIC DIAGRAM can be found on page 37.
1 2 3 4 5 6
+
TAPE M MOTOR
1 2 3 4 5 6 7 8
8 PH
1 2 3 4 5 6 7 8
T2 PLAY GND T2 RUN +MTR SOL2 SOL1 F_REC T1 RUN CNS702 D710 DS1SS133 D709 DS1SS133 C712 47/50
Q707 KTA1271 Y
Q708 KTA1271 Y
R779 10K
Figure 26 SCHEMATIC DIAGRAM (7/9) 26
LED701
C563 2.2/50
R569 100K
R726 2.2K
R727 2.2K
SMUTE
R736
53 NO USE 52 CD CLAMP SW 51 T2 RUN T1 50 49 48 47 46 45 44 43 42 41 RUN
T_MOTOR T_SOL_A
R740 R739 1K 1K R738 22K
58 LCK 0 57 MIC SW 56 FPB 55 FPA 54 PLAY SW_B
T_SOL_B
G11
P5
P4
P3
P2
P9
P8
P7
P6
P1
CD-BA250/CD-BA2600
TO CD SERVO PWB P21 12-B CNP8
9 8 7 6 5 4 3 2 1
CNS8
9 8 7 6 5 4 3 2 1
BI701
WRQ(DSP) DRF CD CE CD DO CD DI CD CLK F F F 3 2 1
27 26 25 24 23 16 15 14 13 12 11 10 9 8 7 6
P05 P04 P03 P02 P01 G11 G10 G09 G08 G07 G06 G05 G04 G03 G02 G01
RES OUT CLAMP SW DISC_NO SW
FFC701 C701 1/50 1 TUN SM CE DO DI CLK D_GND T_BIAS T_T1/T2 REC/PLAY SMUTE SPA_SIG A_GND M_+12V 15V 20dB M_GND SW_5V UN_SW 5V SP_DET SP_RLY VF1 VP VF2 P-IN CNS701 1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 24
85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 VDD G11 G10 G9 G8 G7 G6 G5 G4 G3 G2 G1 P5 P4 P3 P2 P1
1
-20dB 2 DSA_STB 3 T-BIAS 4
+B R773 1K R702 1K R703 1K R704 1K R705 1K R706 1K R707 1K R708 1K
IC701 IX0399AW SYSTEM MICROCOMPUTER
T_T1/T2 5 REC/PLAY 6 RES OUT 7 DRF 8 WRQ 9 RESET 10 X2 11 X1 12 Vpp/IC 13 XT2 14
C702 220/10 +B
C703 0.022
+B -B C704 15P C705 18P
+B -B
CNP701 TO MAIN PWB P23 12-D
+B +B
XL700 4.194304MHz +B R709 1K R710 1K R711 1K R712 1K R713 1K R714 1K R715 1K R716 1K R717 1K
ESS_DO SS_DI SS_STB S_ACK EG_POW ATCH W OUT
SPAN 15 VDD 16 CD CLK 17 CD DI 18 CD DO 19 CD CE 20 CE 21 CLK 22 DI 23 DO AVSS O/C SW/ DSA DATA TUN SM DSA_ACK SPEANA2 JOG 0 JOG 1 KEY 0 KEY 1 KEY 2 AVDD AVref P_IN 24 25 26 27 28 29 30 SPEANA1 SPEANA0
+B
+B
+B +B R774 10K +B
TIMER LED
REMOCON
T_MOTOR T_SOL_A
T_SOL_B
_
SMUTE
VDD
VSS
46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31
+B R725 1K
R729 2.2K
R727 2.2K
R724 1K
+B 2
R721 1K
R719 1K
R720 1K
R728 2.2K
R726 2.2K
R718 1K
R765 4.7K
+B
+B -B -B
LED701
+B +B +B +B +B +B R781 47K +B +B +B R766 10K R767 10K R768 10K RD18 680 RD19 820 RD20 1K RD21 1.5K +B C715 0.01 L701 100µH D711 DS1SS133 5V BACK UP +B +B D713 DS1SS133 C714 3.3/50 D712 DS1SS133 +B +B RX701 REMOTE 1 2 3 SENSOR C716 0.022 D714 DS1SS133
+B
Q709 KRC102 M
2 1
3
R782 100K D715 DS1SS133 RD22 2.2K RD23 2.7K RD24 3.9K RD25 5.6K
R783 100
C717 47/50
+B
RD26 10K
RD27 18K
RD28 33K
RD29 100K
SW720 SW721 CD TAPE SW722 SW723 SW725 TUNING MEMORY/ SW724 FAST DOWN SET REWIND FORWARD RD13 680 RD14 820 RD15 1.8K RD30 5.6K RD16 3.9K RD17 180K
SW726 SW727 STOP PLAY
SW731 SW732 SW730 VIDEO TUNER SW729 TUNING REC UP PAUSE
SW714 SW715 SW716 DIMMER X-BASS EQUALIZER RD01 680 RD02 820
SW717 SW718 VOLUME VOLUME DOWN UP RD06 RD03 RD04 RD05 2.2K 1.5K 2.7K 1K
RD07 3.9K
RD08 5.6K
RD09 10K
RD10 18K
RD11 33K
RD12 100K SW712 SW713 DISC OPEN/ SKIP CLOSE
SW701 SW702 SW703 POWER CLOCK TIMER
7
8
9
10
11
12
Figure 27 SCHEMATIC DIAGRAM (8/9) 27
CD-BA250/CD-BA2600
AM ANTENNA FM ANTENNA CNP301 3 2 1 C301 0.01 BF301 BAND PASS FILTER 1 2 3 CT1 0.01 DS1SS133 D302 DS1SS133 D301
3 2 1
A
MAIN PWB-A1(3/3)
C314 0.0047 C315 0.0047 D305 DS1SS133 C308 4.7P(CH) L312 R314 22 R311 100K R313 VD302 33K SVC211C C312 0.022
C303 10P(CH) FM RF C304 0.01 C309 0.001 1 2 3 4 C305 5 4.7P (CH) 6 7 8 R302 9 10
FM SIGNAL AM SIGNAL
B
C316 0.022 C317 0.001 R327 33 R325 47K
C338 C323 0.022
IC301
AM BAND COVERAGE fL
C310 15P(CH)
T301 FM OSC. VD303 SVC211C C324 C311 3.9P(UJ) 18P T302 FM IF
AM TRACKING
T306 AM OSC. T303
0.001
Q302 KTC3194 Y C318 100P
IC301 TA7358AP FM FRONT END
C306 0.022 C307 10/50
C334 22P
C335 560P (SL)
C330 15P
1 2 CF303 R316 4.7K 3 C313 22P (CH)
R323 68K VD301 SVC348S R336 10K C332 0.022 C331 0.047 C340 0.001
R309 10K
C
TP301 +B C384 0.001 C382 15P(CH) R375 470 1 2 C381 12P(CH) X352 4.5MHz +B R382 150
R374
1K 1K 1K 1K
D
R373 R372 R378
R386 22K
X OUT 22 R381 X IN VSS 21 10K AOUT 20 C393 C394 3 CE 1/50 47/25 4 DI R380 1.5K C380 C392 5 CL 0.001 AIN 19 10/50 6 DO PD 18 VDD R379 17 7 FM/AM IF FM IN 16 2.2K C387 8 CONT AM IN 15 0.022 C385 9 FM/AM 14 0.01 L351 100µH 10 MO/ST SD 13 IF IN 12 R377 11 ST IND 47K R376 C386 IC302 1K 330P
C397 0.022
C342 0.022 C350 C352 0.022 10/50 1 R351 5.6K R358 3.9K R365 10K 3.3/50 0.022
IC302
C389 0.022 T351 AM IF
AM OSC OUT 24 FM IF IN AM OSC IN 23 2 AM MIX OUT 3 REG FM AFC 22 AM RF IN 21 C363
C362 C361 0.022 4.7/50 0.022 0.001 R350 2.7K
2 CF352 C353 R393 1K C399 0.022 C398 100/10 C354 CF351
1 R352 3 1K
VSM 20 C364 AM IF IN C365 4 AM LOW CUT 19 FM/AM OUT 18 C366 5 GND 6 SD 7 STEREO 8 FM DET 9 VCC C367 1/50
0.022 0.022 R353 270
LC72131 PLL(TUNER)
E
R360 4.7K +B
R395 47K R387 5.6K
R359 1.8K R392 270 C395 0.022 C396 100/10 R384 5.6K C388 0.001 30 24 22 27 29 26 24 23 25 31 A+10V +B +B C391 47/25 Q360 KTA1266 GR
R385 5.6K R383 5.6K
R356 R357 1K 470K C374 0.015 C355 15 C369 R-CH OUT 27P R355 R388 22P C373 L-CH OUT 14 3.3K 3.9K 0.015 C372 12 PHASE C371 MO/ST 13 1/50 C370 1/50 C358 (FM/AM) 1/50 1/50 R361 R362 10K IC303 R364 10K 6.8K
C356 0.001 C357 10 IF OUT 2.2/50 11 PHASE
X351 456kHz C368 MPX VCO 17 1/50 MPX IN 16
TP302 TP
LA1832S FM IF DET./FM MPX./AM IF
F
R391 270
GND(A_GND) TUN_SM TUN_R TUN_L DI CE DO CLK GND(D_GND)
G
H
· NOTES ON SCHEMATIC DIAGRAM can be found on page 37.
1 2 3 4 5 6
TO MAIN PWB P23 12-E
Figure 28 SCHEMATIC DIAGRAM (9/9) 28
ZD351 DZ5.1BSB
R363 6.8K
AM ANT.
R322 680
CD-BA250/CD-BA2600
AC POWER SUPPLY CORD AC120V/60Hz
POWER TRANSFORMER PWB-A3
T.F
PT801 POWER TRANSFORMER
POWER PWB-A2
F904 2A/125V
D908 C911 D907 R904 R977 R978 C909 F903 2A/125V C901 ZD902
F901 4A/125V
ZD903 R905
D906
C902 F902 4A/125V
ZD901
R907
C913
R906
C908 R983
C906
Q901 B C E C912
C905
D901
R984 D905 D904 D903 D902
C910
CNP902 10 9 8 7 6 5 4 3 2 1
CNS902
FROM MAIN PWB P31 11-F
7
8
9
10
11
12
Figure 29 WIRING SIDE OF P.W.BOARD (1/7) 29
CD-BA250/CD-BA2600
A
C301
C384
R373 X352 C382 C381 R379 C397 R374 R372
R378 R359 R388 C396 R391 R383 R392 C395 R395 ZD351 C398 R606 C388 CF351 C356 VD303 C313 C312 R353 C357 C610 C358 C601 R363 R361 R364 C373 R357 R350 C363 R362 R356 C374 C368 R602 C609 R601 R604 R618 D912 R952 B C C948 E R930 C930 R954 Q902 R603 C934 R931 R969 C935 C931 R957 R944 R903 R909 C918 C916 R908 R975 R932 C932 C942 R936 R938 C936 R934 C938 R956 R902 R901 R976 R387
R360 C391
1 2 3 4 5 6 7 8 9 10 11
R376
IC302
C387 R384 C386 R386
22 21 20 19 18 17 16 15 14 13 12
C392 C380
L351 C318 C385
R381 R380 R375
R393
C394
R377
Q360 B C R382 E T351 3
C307
B
9
C393 T301 R325
R385
B
C
E C324
CF352
2 1
R322
C306
8 7 CNP301 R314 FM ANTENNA
R302 C310
Q302 R327 C311
C370
R309
1 2 3
AM LOOP ANTENNA
1 2 3
5 C304 4 3
IC301
6
C352
C350
C354
C305
D305
C355
2 1 C303
T302 L312
CF303 1 2 3
C315
D301 BF301 1 2
C309 C308 C316 R313 C362 R311 VD302 R365 C361
R351
C
C366
IC303
X351 C371
D302 CT1
3 T303
C314
24 23 22 21 20 19 18 17 16 15 14 13
C317
R316
R336
C323
R323 C364 C365 C330 C338 C332 C331 C340 R693 C691 R691 D690 JK690 VIDEO AUX IN R-CH D691 VD301 C335 T306
C342
C334
R358
C367
C369
C372
D
C693
C635
R611
R613
R605
R615
R621
Q601 B C E
C639
Q602 B R610 C E R612 R614
C636
Q903
C969
R692
R690
C690
Q908
L-CH
R619 Q906 E C B
Q904
R953
C947
3 Q907 2 1
1 2 3
B
R951
C968 R971 CNS971 RD BR 1 Q914 2 D915 R972 E C B R973 C967
D911
B
E
M901 FAN MOTOR
R933 C933 R935 R937 R939 C937 C939 C941 R943 C945
C946
C940 R942
LG1
R-CH R967 R968
B C E
C963
F
C953 L-CH L921 R959
R941 R955
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
R940
SO901 SPEAKER TERMINAL
IC902
L920
IC901
R945
R947
D914
RL914
G
H
1
2
3
4
R949
R948
R946
5
R950
C952
R958
6
Figure 30 WIRING SIDE OF P.W.BOARD (2/7) 30
C903
C915
E
ZD904
D913
E
C
C
C949
R970
CNP971 1 2
C
E
Q905
B
C603
R352 C353 1 2 3 4 5 6 7 8 9 10 11 12 C389 C399
R355
C608
CD-BA250/CD-BA2600
TO CD SERVO PWB P34 5-A CNP7
CNS601
1 2 3 4 5 6 GY WH GY WH GY RD
MAIN PWB-A1
COLOR TABLE BR
Q107 R137
C620 C616 C608 C606 C618 C614 C622 C610 C612 1 2 3 4 5 6 7 8 9 10 11 12 C601 R608 C626 C624 R609 C625 C623 R126 C621 C617 R602 C609 C615 R607 GY WH GY WH GY RD R124 6 BI601 R601 R603 R120 C116 C106 R114 R118 C114 CNP101 3 2 1 E C101 CNP701 9 11 13 15 17 19 21 23 8 10 12 14 16 18 20 22 24 C B C102 E C105 C B C613 C619 C627 C118 C121 C108 C110 R102 R101 E C104 R113 C B R622 R623 R136 C120 R122 C122 R138 B C E C130 C126
12 11 R130 10
BROWN RED ORANGE YELLOW GREEN BLUE VIOLET GRAY WHITE BLACK PINK
RD(R) OR YL GR
C134
B R131
C
E
R606
R158 R139 C128 R134 C132 Q108 R132
R135 C131 C129 R133 C119 R121
BL VL GY WH(W)
24 23 22 21 20 19 18 17 16 15 14 13
C135
13 14 15 16 17 18 19 20 21 22 23 24
C150
IC601
C607 C605
C133
C127
C125 R127
R123
BK PK
C603
C611
C112
R128 9 8 C124 7 6 5 4 3 2 1 R116
C123 R125 C111 R117 C109 C115 R119 C113 R115 R106 Q104 R104 E R112 C B Q102 R103
IC101
C117
R129
C107
FROM TAPE2 RECORD/PLAYBACK ERASE HEAD
P35 11-F
1
1 2
3 4
5 6
7
Q106 Q105 R107 R110 R109 R108
7 6 5 4 3 2 1
CNP102
E
C
B
Q101 R111 R105 C137 R144 R143
E
C Q103
B
C103
R145 L103 E C Q111 B
R147
Q114 Q113
R148 1 2 3 C136 R146 C141
C138
3
2
1
C139 Q112 E C B
C140 R141
FROM TAPE1 PLAYBACK HEAD R142
P35 10-F
C915
ZD904
R140 E C Q109 B
R149
R909 C918
C920
3
2 Q110
1
C916 R975
D916 C923
10
GY
CNS902
10 9 8 7 6 5 4 3 2 1 CNP902 TO POWER PWB P29 9-H WH GY WH
C907
IC904
B C E 1 2 3 1 2 3
IC902
R976
IC903
ZD905 C921 BI902
C970
GY WH GY WH GY RD
C904
R981
C903
R988
1 C734 C735 5
5 4 3 2 1 CNP981
R982 R986
FW981 1
1 FFC701
24
JK701 HEADPHONES
HEADPHONES PWB-B1
CNS701 TO DISPLAY PWB P33 11-A
7
8
9
10
11
12
Figure 31 WIRING SIDE OF P.W.BOARD (3/7) 31
CD-BA250/CD-BA2600
A
DISPLAY PWB-B1
1 2 3 6 7 8 9 10 11 12 13 14 15 16
R746
R747
B CNS8 9 8 7 6 5 4 3 2 1 WH GY WH GY WH GY WH GY RD 1 9 C E Q703
BI701
B C E
B C E Q701
B
TO CD SERVO PWB P34 4-A CNP8
C701
R749 R750 R751
R748
Q702
R702 C702 R703 R704 RX701 R568 R566 R571 C565 R567 R565 R561 C561 R562 D716 C572 C568 4 3 2 1 R576
R575 R573 C567 R574
C
COLOR TABLE BR RD(R) OR YL GR BL VL GY WH(W) BK PK BROWN RED ORANGE YELLOW GREEN BLUE VIOLET GRAY WHITE BLACK PINK
SW713 OPEN/ CLOSE
C564 4 3 2 1 5 3 2 1 D562
C708 R783 C566
R708 Q709 C715 1 2 C717
R572 R782
R570 C562
IC561
6 7 8
C716
D715
L701
X
3
D561
R781
C570
R580
C571
IC562
6 7 8
R577
5
D
D712 R569 R579
C714
C563
RD06
D563
RD07
C573
ZD561
C569
R563
R578
SW717 VOLUME UP RD30
D711
SW731 VIDEO
D713
D714
E
RD09 RD12 RD11 SW712 DISC SKIP SW715 X-BASS Q706 E C B
R779 R777
Q707
D710
RD15
RD08
E C B Q708
E
R778
SW716 EQUALIZER
RD
C B
D709 RD16
F
RD10
C712
CNS702 1 2 3 4 5 6 7 8 SW718 VOLUME DOWN
1
8 FFC702
G
P35 8-A TO TAPE MECHANISM PWB
H
1
2
3
4
5
6
Figure 32 WIRING SIDE OF P.W.BOARD (4/7) 32
CD-BA250/CD-BA2600
CNP701 FFC701 TO MAIN PWB P31 9-H
1
24
23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44
47 48 49
FL701
81
C703
80
D703
1 2 C707
3 4
5 6
7
9 11 13 15 17 19 21 23 8 10 12 14 16 18 20 22 24 CNS701
R701
85 75 100 1 90 95 5 10 15 70 65 60
R760 55 51 C706
R752
IC701
20
C704
R705 R706 R707
45 40 25 35
50
C705
LED701 R740 R756 R759 R758
SW701 POWER
30 XL700
31 R729
R733 R761
R739 R738
R714 R715
R736
R717
R725 R765 R774
R709
R710
R711
R712
R716
RD05
RD04
R726 R727 R728
R718
R713
R724
R734
R735
R719
R720
R721
R773
SW721 TAPE
RD29
SW732 TUNER
SW720 CD
R731 R732
SW714 DIMMER
RD18
R768
R766
R767
R772
RD03
RD13
R770
RD19
RD28
SW730 TUNING UP
SW702 CLOCK
RD14
RD24
SW726 PLAY
SW727 STOP
RD01 RD02
RD23
SW725 FAST FORWARD
RD22 SW722 TUNING DOWN
RD21 RD20
SW724 REWIND
SW729 REC/PAUSE
SW723 MEMORY/SET
7
8
9
RD26
RD17
RD27
RD25
SW703 TIMER
10
11
12
Figure 33 WIRING SIDE OF P.W.BOARD (5/7) 33
CD-BA250/CD-BA2600
P32 1-B FROM DISPLAY PWB P31 8-A FROM MAIN PWB
CD SERVO PWB-C
A
C38 R38 R37 R36
CNS8
3
CNS601
R7
8 7 6 5 4 3 2 1
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6
R35 R34
R33
R32
CNP8
C51
CNP7 C42 R23 R47 ZD2 Q2 B C E
C32
C28
CNP2
C4
C49
C33
R22
C36
Q1
C3
C30
ZD1
C37
B
E C B
R9 R10
C34 C35 R31 R29 R28 61 60 65 55 70 50 75 IC1 45 5 35 10 30 15 25 20 21 XL1 R43
C17
C18
C2
C1
7 8
C
C27
R40
C13
R4
R1 R6 R3
C14
5
7 6 5 4 3 2 1
CNP1
C7 R12 C8
R39
C5 R11
C48 L1 R27 R25 C24 C26 C23 R24 R26 C25
12 11
R42 R41
C44 41 40
C50 R5 R2
C6 80 1
R49
C16
10 9
R20 R18 R30
R44
C39
C12
R13 R14 R15 R16
C10
C11
C9
21
1 15 10 5 40
6
R17
C40
20
D
IC2
C41
25 30 35 22
1 2 3
R46 R45
Q3 D2 D1 R19
42 CNP3
6 5 4 3 2 1
CNP4
6 5 4 3 2 1
E
4
2
1
PICKUP UNIT(306)
CNS3A
654 321
WH GR WH GR WH RD
F
CNS1A
1 2 3 4 5 6 7 1 2 3 4 5 6 7 8 RD WH BL WH BL WH BL RD WH GY WH GY WH GY WH
654 321
CNS3B CNS1B
1 2 3 4 5 6 7 1 2 3 4 5 6 7 8
7 8 1 1
CD MOTOR PWB-F
654 321
G
SW4 PICKUP IN
CNS2A
CNS2B
H
M1 SPINDLE MOTOR
· The numbers 1 to 12 are waveform numbers shown in page 38.
1 2 3 4 5 6
Figure 34 WIRING SIDE OF P.W.BOARD (6/7) 34
M2 SLED MOTOR
+ +
-
CD-BA250/CD-BA2600
P32 4-G TO DISPLAY PWB CNS703 FFC702
1 8
TAPE MECHANISM ASSEMBLY
TAPE MECHANISM PWB-D
SW SW
1 2
SW PH
1 3 5 7 2 4 6 8
SOLENOID
+
TAPE MOTOR
SOLENOID
TAPE 1 PLAYBACK HEAD
TAPE 2 ERASE HEAD RECORD/PLAYBACK HEAD
WH
BK YL WH
BL
WH BK
PK
GR
GR
WH BK PK
3 2 1
CNP101 P31 11-E TO MAIN PWB
6 5 4 3 2 1
WH BK WH BK WH RD
CNS4
M3 T/T UP/DOWN LOADING MOTOR
CD LOADING MOTOR PWB-E
BL YL WH BK PK WH BK
7 6 5 4 3 2 1
CNP102 P31 11-D TO MAIN PWB
COLOR TABLE BR RD(R) OR YL GR BROWN RED ORANGE YELLOW GREEN BLUE VIOLET GRAY WHITE BLACK PINK
6 BI4
1
+
SW1 OPEN/ CLOSE
BL VL GY WH(W) BK PK
SW3 DISC NUMBER
SW2 CLAMP
7
8
9
10
11
12
Figure 35 WIRING SIDE OF P.W.BOARD (7/7) 35
PK
GR
CD-BA250/CD-BA2600
VOLTAGE
PIN NO. 1 2 3 4 5 6 7 8 9 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 IC1 VOLTAGE PIN NO. 1.6V 41 42 1.0V 43 1.6V 44 1.8V 45 3.3V 46 0V 47 1.6V 48 1.6V 49 1.6V 50 1.6V 51 1.6V 52 1.6V 53 1.5V 54 1.5V 55 1.5V 56 1.5V 57 0.8V 58 3.2V 59 0V 60 1.6V 61 1.6V 62 1.6V 63 1.6V 64 0V 65 0V 66 3.2V 67 0V 68 0V 69 0V 70 0V 0V 71 0V 72 0V 73 0V 74 1.6V 75 0V 76 0V 77 3.2V 78 3.2V 79 0V 80 IC101 PIN NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 VOLTAGE 0V 0V 0.57V 2.0V 0.59V(AC) 1.32V 0V 0.59V 3.45V 3.42V 0V 0V 6.92V 4.13V 0V 3.43V 0.59V 0V 2.63V 0.56V(AC) 2.00V 0.57V 0V 0V PIN NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 IC2 VOLTAGE 3.7V 3.7V 0V 0V 3.7V 3.2V 3.2V 3.2V 0V 0V 0V 3.2V 0V 0V 0V 0V 0V 3.2V 0V 0V 0V 4.7V 0V 4.9V 4.9V 4.9V 0V 4.9V 0V 0V 0V 0V 0V 0V 0V 3.2V 3.2V 3.2V 0V 3.2V IC302 VOLTAGE 2.55V 0V 0V 0V 0V 5.16V 0V 4.69V 4.02V 4.10V 5.15V 0V 5.15V 0V 0V 2.53V 5.16V 0.90V 0.90V 1.31V 0V 2.55V PIN NO. 1 2 3 4 5 6 7 8 9 PIN NO. 1 2 3 4 5 6 7 8 9 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 VOLTAGE 1.7V 1.7V 1.8V 2.1V 2.1V 2.1V 2.0V 0V 0V 0V 0V 0V 0V 0V 2.1V 2.1V 1.6V 4.9V 3.0V 1.6V 0V 0V 4.9V 4.9V 1.8V 2.1V 2.1V 0V 0V 0V 0V 0V 0V 0V 0V 4.2V 0V 2.1V 2.1V 4.9V 3.7V 3.7V IC301 VOLTAGE 0.91V 1.64V 5.40V 1.62V 0V 5.41V 4.65V 5.37V 5.41V IC561 PIN NO. 1 2 3 4 5 6 7 8 9 VOLTAGE 0.17V 0.2V 0.19V 13.11V 0.19V 0.2V 0.17V 0V 6.23V PIN NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 IC303 VOLTAGE 2.09V 5.17V 2.09V 2.08V 0V 5.15V 5.15V 3.02V 5.17V 4.35V 4.01V 4.01V 4.10V 1.18V 1.19V 2.08V 1.79V 1.79V 0V 0.58V 2.60V 2.96V 5.17V 3.64V IC601 PIN NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 PIN NO. 1 2 3 4 5 6 7 8 VOLTAGE 0V 0V 0V 5.03V 5.00V 5.01V 5.01V 5.03V 5.01V 5.01V 5.01V 5.01V 5.01V 5.01V 5.01V 5.01V 5.03V 5.01V 5.01V 5.00V 5.04V 5.03V 10.03V 0V IC562 VOLTAGE 0.26V 0.3V 0.3V 13.11V 0V 0V 0V 6.23V PIN NO. 1 2 3 4 5 6 7 8 9 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 43 44 45 46 47 48 49 50 IC701 VOLTAGE PIN NO. 4.77V 51 52 4.68V 53 0V 54 0V 55 4.67V 56 4.72V 57 4.74V 58 0V 59 5.41V 60 4.86V 61 2.3V 62 2V 63 0V 64 4.76V 65 0V 66 4.77V 67 4.7V 68 0V 69 5.36V 70 0.16V 71 0V 72 0V 73 0V 74 0V 75 0V 76 2.3V 77 0.22V 78 0V 79 0V 80 0V 5.03V 81 5.03V 82 5.03V 83 4.77V 84 5.04V 85 2.48V 86 0V 87 0V 88 4.92V 89 0V 90 5.67V 91 12.5V 92 12.52V 93 12.5V 94 3.8V 95 4.78V 96 4.78V 97 4.5V 98 5.04V 99 5.28V 100 IC901 PIN NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 VOLTAGE 0V 0V 0V 50.1V 48.8V 0V 0V 51.8V 51.5V 0V 0V 50.1V 0V 0V 0V PIN NO. 1 2 3 PIN NO. 1 2 3 VOLTAGE 5.28V 0V 0V 5.25V 5.28V 5.28V 0V 0.31V 0V 0V 0V 0V 0V 0V 0V 0V 28.82V 28.82V 28.8V 28.88V 28.79V 28.8V 18.2V 18.74V 26.3V 23.77V 0V 21.2V 28.9V 26.2V 26.3V 26.3V 21.28V 28.83V 0V 0V 18.73V 0V 0V 26.28V 26.28V 26.24V 26.32V 26.3V 26.29V 26.3V 26.3V 26.3V 26.28V 26.3V IC902 VOLTAGE 12.56V 24.75V 13.17V IC903 VOLTAGE 24.70V 0V 10.04V IC904 PIN NO. 1 2 3 VOLTAGE 12.21V 0.66V 5.68V
36
CD-BA250/CD-BA2600
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 pico-farad and the unit of the capacitor without such a symbol is microfarad.