Sharp CD-BK2100V User manual

– 1 –
CD-BK2100V
No. S5045CDBK210V
CONTENTS Page
SAFETY PRECAUTION FOR SERVICE MANUAL ........................................................................................................... 2
VOLTAGE SELECTION..................................................................................................................................................... 2
SPECIFICATIONS ............................................................................................................................................................. 3
NAMES OF PARTS ........................................................................................................................................................... 4
OPERATION MANUAL ..................................................................................................................................................... 6
DISASSEMBLY.................................................................................................................................................................. 8
REMOVING AND REINSTALLING THE MAIN PARTS................................................................................................... 11
ADJUSTMENT ................................................................................................................................................................. 12
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 14
WAVEFORMS OF CD CIRCUIT...................................................................................................................................... 15
BLOCK DIAGRAM ........................................................................................................................................................... 16
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD..............................................................................................20
VOLTAGE ........................................................................................................................................................................ 42
TROUBLE SHOOTING .................................................................................................................................................... 43
FUNCTION TABLE OF IC................................................................................................................................................ 47
FL DISPLAY......................................................................................................................................................................60
REPLACEMENT PARTS LIST/EXPLODED VIEW
CD-BK2100V
• In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
SERVICE MANUAL
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
SHARP CORPORATION
CD-BK2100V Video CD Mini System consisting of
CD-BK2100V (main unit) and CP-BK2100 (speaker system).
NTSC/PAL
VIDEO CD MINI SYSTEM
MODEL

CD-BK2100V
– 2 –
VOLTAGE SELECTION
Thevoltageselectorislocatedontherearpaneloftheunit.Ifadjustmentisnecessary,useascrewdriverinordertoturntheselector
in either direction until the correct voltage figure is displayed in the window.
QACCA0003AW00
QACCB0011AW00
QACCE0010AW00
QACCJ0007AW00
Figure 2 AC POWER SUPPLY CORD AND AC PLUG ADAPTOR
SAFETY PRECAUTION FOR SERVICE MANUAL
CAUTION
This Video CD Mini System is classified as a CLASS 1
LASER product.
The CLASS 1 LASER PRODUCT label is located on the
rear cover.
Use of controls, adjustments or performance of proce-
dures other than those specified herein may result in
hazardous radiation exposure.
As the laser beam used in this compact disc player is
harmful to the eyes, do not attempt to disassemble the
cabinet. Refer servicing to qualified personnel only.
Laser Diode Properties
Material: GaAIAs
Wavelength: 780 nm
Emission Duration: continuous
Laser Output: max. 0.6 mW
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.
QPLGA0003AWZZ QPLGA0004AWZZ
WARNINGS
THE AEL (ACCESSIBLE EMISSION LEVEL) OF THE LASER POWER OUTPUT IS LESS THAN CLASS 1 BUT THE LASER
COMPONENT IS CAPABLE OF EMITTING RADIATION EXCEEDING THE LIMIT FOR CLASS 1. THEREFORE IT IS
IMPORTANTTHATTHEFOLLOWINGPRECAUTIONSAREOBSERVEDDURINGSERVICINGTOPROTECTYOUREYES
AGAINST EXPOSURE TO THE LASER BEAM.
1-WHENTHECABINETISREMOVED,THEPOWERISTURNEDONWITHOUTACOMPACTDISCINPOSITIONANDTHE
PICKUP IS ON THE OUTER EDGE 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 UNIT AND REPLACEMENT SERVICE PARTS ARE ALL FACTORY
PRESET BEFORE SHIPMENT.
DO NOT ATTEMPT TO READJUST THE LASER PICKUP UNIT DURING REPLACEMENT OR SERVICING.
3-UNDER NO CIRCUMSTANCES STARE INTO THE PICKUP LENS AT ANY TIME.
4-CAUTION-USE OF CONTROLS OR ADJUSTMENTS, OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE
SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.

– 3 –
CD-BK2100V
General
Amplifier section
Compact disc player section
Video CD section
Tuner section
Cassette deck section
Power source: AC 110/127/220/230-240 V, 50/60
Hz
Power
consumption: 154 W
Dimensions: Width; 270 mm (10-5/8")
Height; 330 mm (13")
Depth; 355 mm (14")
Weight: 8.7 kg (19.1 lbs.)
Output power: MPO; 334 W (167 W + 167 W) (10
% T.H.D.) [Main speaker (woofer,
tweeter and super tweeters); 134
W (67 W + 67 W), Subwoofer; 200
W (100 W + 100 W)]
RMS; 200 W (100 W + 100 W) (10
% T.H.D.) [Main speaker (woofer,
tweeter and super tweeters); 80 W
(40 W + 40 W), Subwoofer; 120 W
(60 W + 60 W)]
RMS; 184 W (92 W + 92 W) (0.9 %
T.H.D.) [Main speaker (woofer,
tweeter and super tweeters); 74 W
(37 W + 37 W), Subwoofer; 110 W
(55 W + 55 W)]
Input terminals: Video/Auxiliary (audio signal) 2;
500 mV/47 kohms
Microphone 1/2; 1 mV/600 ohms
Output terminals: Speakers; 6 ohms
Headphones; 16 - 50 ohms (rec-
ommended; 32 ohms)
Video out; 1 Vp-p (75 ohms)
Type: 3-disc multi-play compact disc
player
Signal readout: Non-contact, 3-beam semi-con-
ductor laser pickup
D/A converter: 1-bit D/A converter
Frequency
response: 20 - 20,000 Hz
Dynamic range: 90 dB (1 kHz)
Video output format: PAL/PAL 60/NTSC
Frequency range: FM; 88 - 108 MHz
AM; 531 - 1,602 kHz
Frequency
response: 50 - 14,000 Hz (Normal tape)
Signal/noise ratio: 55 dB (TAPE 1, playback)
50 dB (TAPE 2, recording/play-
back)
Wow and flutter: 0.3 % (WRMS)
Type: 5-way type [13 cm (5-1/4") sub-
woofer, 13 cm (5-1/4") woofer, 5
cm (2") tweeter and super tweeter
2]
Maximum input
power (total): 200 W
Rated input power
(total): 100 W
Impedance: 6 ohms
Dimensions: Width; 310 mm (12-3/16")
Height; 330 mm (13")
Depth; 270 mm (10-5/8")
Weight: 5.4 kg (11.9 lbs.)/each
Specifications for this model are subject to change without
prior notice.
SPECIFICATIONS
CD-BK2100V
CP-BK2100
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.

CD-BK2100V
– 4 –
NAMES OF PARTS
CD-BK2100V
1.Disc Tray
2.(VCD/CD) Karaoke Mode Button
3.(VCD) Playback Control Button
4.(VCD) On Screen Display On/Off Button
5.(VCD) Digest Button
6.(VCD) Bookmark Button
7.Timer Set Indicator
8.On/Stand-by Button
9.Clock Button
10.Timer/Sleep Button
11.Function Selector Buttons
12.Headphone Socket
13.Dimmer Button
14.Volume Control
15.(VCD/CD) Disc Number Select Buttons
16.Tuning and Time Up/Down Buttons
17.Memory/Set Button
18.(VCD) Skip/Previous Button
(CD) Track Down/Review Button
(TUNER) Preset Down Button
(TAPE 2) Fast Wind Button
19.(VCD) Skip/Next Button
(CD) Track Up/Cue Button
(TUNER) Preset Up Button
(TAPE 2) Fast Wind Button
20.Equalizer Mode Selector Button
21.(VCD/CD) Disc Skip Button
22.(VCD/CD) Open/Close Button
23.(TAPE 2) Record Pause Button
24.(TAPE 2) Reverse Play Button
25.(VCD) Stop/Return Button
(CD/TAPE) Stop Button
26.(TAPE 2) Reverse Mode Button
27.(VCD/CD) Play/Repeat Button
(TAPE 1) Play Button
(TAPE 2) Forward Play Button
28.Extra Bass/Demo Mode Button
29.Microphone Sockets
30.Microphone Level Controls
31.(TAPE 1) Cassette Compartment
32.(TAPE 2) Cassette Compartment
2
7
8
9
10
11
12 16 21 22
345
14
15
13
6
17 18 19 20
25 27 2824 23
126
29 30
31 32
Frontpanel

– 5 –
CD-BK2100V
CP-BK2100
Display
1.Extra Bass Indicator
2.Spectrum Analyzer/Volume Level Indicator
3.(VCD/CD) Disc Number Indicators
4.Karaoke Mode Indicator
5.(VCD/CD/TUNER) Memory Indicator
6.(VCD/CD) Pause Indicator
7.(TAPE 2) Record Indicator
8.(VCD/CD) Play Indicator
9.(VCD/CD) Music Schedule Indicators
10.(VCD/CD) More Tracks Indicator
11.Sleep Indicator
12.FM Stereo Mode Indicator
13.(TAPE) Reverse Mode Indicator
14.(TAPE 2) Reverse Play Indicator
15.(TAPE 1) Play Indicator
(TAPE 2) Forward Play Indicator
16.(VCD/CD) Repeat Indicator
17.FM Stereo Indicator
18.Timer Record Indicator
19.Timer Play Indicator
Rear panel
1.AC Voltage Selector
2.AC Power Lead
3.FM 75 Ohms Aerial Terminal
4.FM Aerial Earth Terminal
5.AM Loop Aerial Input Socket
6.Speaker Terminals
7.Span Selector Switch
8.Video Output Socket
9.Video/Auxiliary (Audio Signal) Input Sockets
1.Super Tweeters
2.Tweeter
3.Bass Reflex Duct
4.Woofer
5.Subwoofer
6.Main Speaker
(Woofer, Tweeter and Super Tweeters) Wire
7.Subwoofer Wire
13 14 15 16 17 18 19
32
1
2
7654891011
1
2
3
4
5
6
7
9
8
1
2
3
4
56
7
12

CD-BK2100V
– 6 –
OPERATION MANUAL
Remote control
1.Remote Control Transmitter LED
2.Echo Level Up/Down Buttons
3.Karaoke Mode Button
4.Vocal Replacer Button
5.(VCD) VCD Auto/On Button
6.(VCD) Playback Control Auto/Off Button
7.(VCD) On Screen Display On/Off Button
8.On/Stand-by Button
9.(VCD) Direct Search Button
10.(VCD) Digest/Time Search Button
11.(VCD/CD) Clear Button
12.(VCD/CD) Memory Button
13.(VCD/CD) Disc Skip Button
14.(VCD) Skip/Previous Button
(CD) Track Down/Review Button
(TUNER) Preset Down Button
(TAPE 2) Fast Wind Button
15.(VCD) Bookmark Button
16.(TAPE 2) Reverse Play Button
17.(VCD) PAL/NTSC Select Button
18.(TAPE 2) Record Pause Button
19.Function Selector Buttons
20.(VCD/CD) Random Button
21.(VCD/CD) Pause Button
22.(VCD) Skip/Next Button
(CD) Track Up/Cue Button
(TUNER) Preset Up Button
(TAPE 2) Fast Forward Button
23.(VCD) Play/Repeat/Select/Resume Button
(CD) Play/Repeat Button
(TAPE 1) Play Button
(TAPE 2) Fast Wind Button
24.(VCD) Stop/Return Button
(CD/TAPE) Stop Button
25.Extra Bass Button
26.Equalizer Mode Selector Button
27.Volume Up/Down Buttons
3
4
1
28
5
6
7
9
10 11 12 13
14
15
16
17
18
20
21
22
23
24
25
26
27
19
RESETTING THE MICROCOMPUTER
Reset the microcomputer under the following condi-
tions:
To erase all of the stored memory contents (clock and
timer settings, and tuner and CD presets).
If the display is not correct.
If the operation is not correct.
1
Press the ON/STAND-BY button to enter the stand-
by mode.
2
Whilst pressing down the button and the X-BASS/
DEMO button, hold down the ON/STAND-BY button
for at least 1 second.
"CLEAR AL" will appear.
Caution:
The operation explained above will erase all data stored
in memory including clock and timer settings, and tuner
and CD presets.
1
2
Notes concerning use:
Replace the batteries if the operating distance is reduced
or if the operation becomes erratic.
Periodically clean the transmitter LED on the remote con-
trol and the sensor on the main unit with a soft cloth.
Exposing the sensor on the main unit to strong light may
interfere with operation. Change the lighting or the direc-
tion of the unit.
Keep the remote control away from moisture, excessive
heat, shock, and vibrations.
15
15
0.2 m - 6 m
(8" - 20')

– 7 –
CD-BK2100V
(Continued)
Connecting the AC power lead
Check the setting of the AC voltage selector located on the rear panel before plugging the unit into an AC socket. If nec- essary, adjust the selector to correspond to the AC power voltage used in your area. Selector adjustment: Turn the selector with a screwdriver until the appropriate voltage number appears in the window (110V, 127V, 220V or 230V - 240V AC). Notes:
Plug the AC power lead into an AC socket, after any con- nections. Unplug the AC power lead from the AC socket if the unit will not be in use for a prolonged period of time.
AC Plug Adaptor In areas (or countries) where an AC socket as shown in illustration is used, connect the unit using the AC plug adaptor supplied with the unit, as illustrated. The AC plug adaptor is not included in areas where the AC wall socket and AC power plug can be directly connected (see illustra- tion ).
AM/FM interval (span)
The International Telecommunication Union (ITU) has established that member countries should maintain either a 10 kHz or a 9 kHz interval between broadcasting frequen- cies of any AM station. The illustration shows the 9 kHz interval zones (regions 1 and 3), and the 10 kHz interval zone (region 2). Before using the unit, set the SPAN SELECTOR switch (on the rear panel) to AM tuning interval (span) of your area. To change the tuning zone:
1
Press the ON/STAND-BY button to enter the stand- by mode.
2
Set the SPAN SELECTOR switch to "50/9" for 9 kHz AM interval (50 kHz FM interval), and "100/10" for 10 kHz AM interval (100 kHz FM interval).
3
Whilst pressing down the button and the X-BASS/ DEMO button, hold down the ON/STAND-BY button for at least 1 second.
"CLEAR AL" will appear.
Caution:
The operation explained above will erase all data stored in memory including clock and timer settings, and tuner and CD presets.
To an AC socket
1
2
SETTING THE CLOCK
In this example, the clock is set for the 24-hour (0:00) sys- tem.
1
Press the ON/STAND-BY button to enter the stand- by mode.
2
Press the CLOCK button.
3
Within 5 seconds, press the MEMORY/SET button.
4
Press the TUNING/TIME ( or ) button to select the time display mode.
Note that this can only be set when the unit is first installed or it has been reset.
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 con- tinuously. When the 12-hour display is selected, "AM" will change automatically to "PM".
7
Press the MEMORY/SET button.
8
Press the TUNING/TIME ( or ) button to adjust the minutes.
Press the TUNING/TIME ( or ) button once to advance the time by 1 minute. Hold it down to change the time in 5-minute intervals. The hour setting will not advance even if minutes advance from "59" to "00".
9
Press the MEMORY/SET button.
The clock starts operating from "0" second. (Seconds are not displayed.) And then the clock display will disappear after a few seconds.
To see the time display: Press the CLOCK button.
The time display will appear for about 5 seconds.
Note:
The clock display will flash on and off at the push of the CLOCK button when the AC power supply is restored after a power failure occurs or after the AC power lead is disconnected. If this happens, follow the procedure below to change the clock time.
To change the clock time: 1 Press the CLOCK button. 2 Within 5 seconds, press the MEMORY/SET button. 3 Perform steps 6 - 9 above. To change the time display mode: 1 Perform steps 1 - 2 in "RESETTING THE MICROCOM-
PUTER".
2 Perform steps 1 - 9 above.
(Main unit operation) "0:00" The 24-hour display will appear. (0:00 -
23:59)
"AM 0:00" The 12-hour display will appear. (AM 0:00
- PM 11:59)
"AM 12:00" The 12-hour display will appear. (AM
12:00 - PM 11:59)
ON/ STAND-BY
CLOCK
MEMORY/SET
TUNING/ TIME ( )
AM 12:00AM 0:000:00

CD-BK2100V
– 8 –
DISASSEMBLY
Caution on Disassembly
Follow the below-mentioned notes when disassembling
the unit and reassembling it, to keep it safe and ensure
excellent performance:
1. Take cassette tape and compact disc out of the unit.
2. Be sure to remove the power supply plug from the wall
outlet before starting to disassemble the unit.
3.Takeoffnylon bands or wire holders wheretheyneedto
beremovedwhendisassemblingtheunit.Afterservicing
theunit,besure to rearrange the leads wheretheywere
before disassembling.
4. Take sufficient care on static electricity of integrated
circuits and other circuits when servicing.
Figure 8-2
Figure 8-3
1 Top Cabinet 1. Screw ..................... (A1) x4 8-1
2 Side Panel 1. Screw ..................... (B1) x8 8-1
(Left/right)
3 CD Player Unit/ 1. Turn on the power supply, 8-2
CD Tray Cover open the disc tray, take out
the CD cover, and close.
(Note 1)
2. Screw ..................... (C1) x1
3. Hook....................... (C2) x3
4. Hook....................... (C3) x2
5. Socket .................... (C4) x3
4 Rear Panel 1. Screw ..................... (D1) x10 8-2
5 Main PWB 1. Screw ..................... (E1) x3 8-2
2. Socket .................... (E2) x4 9-2
3. Flat Cable............... (E3) x1
4. Tip Wire.................. (E4) x1
6 Power Supply PWB 1. Screw ..................... (F1) x2 9-2
2. Socket .................... (F2) x4
3. Flat Wire................. (F3) x1 9-3
7 Karaoke PWB 1. Screw ..................... (G1) x2 9-3
8 Front Panel 1. Screw ..................... (H1) x2 9-2
9 Display PWB 1. Screw ..................... (J1) x13 9-4
2. Socket .................... (J2) x1
10 Tape Mechanism 1. Open the cassette holder. 9-4
2. Screw...................... (K1) x5
11 Headphones PWB 1. Screw ..................... (L1) x1 9-4
12 Turntable 1. Hook....................... (M1) x2 9-5
2. Cover ..................... (M2) x1
13 Disc Tray 1. Turn fully the lock lever in the 8-3
arrow direction.
2. While holding the lock lever,rotate 9-1
the cam gear until the cam gear
rib engages with the clamp lever.
3. Push the slide holder backward to 9-6
engage the claw with the groove
and remove it in the direction
of the arrow. .............. (N1) x6
14 CD Video PWB 1. Screw ..................... (P1) x1 10-1
(Note 2) 2. Hook....................... (P2) x2
3. Socket .................... (P3) x4
15 CD Mechanism 1. Hook....................... (Q1) x2 10-2
2. Hook....................... (Q2) x3
16 Loading Motor PWB 1. Hook....................... (R1) x5 10-2
STEP REMOVAL PROCEDURE FIGURE
Figure 8-1
(B1)x4
ø3x10mm (B1)x2
ø3x10mm
Rear
Panel
(B1)x2
ø3x10mm
Side Panel
(Right)
Side Panel
(Left)
(A1)x2
ø3x12mm
(A1)x2
ø3x12mm Top Cabinet
(E1)x2
ø3x10mm
(E1)x1
ø3x6mm
(C3)x1
(D1)x2
ø3x10mm
(C1)x1
ø3x10mm
(D1)x8
ø3x10mm
CD Player
Unit
CD Tray Cover
Rear
Panel
Pull
(C3) x1
(C2) x3
1
1
2
Main PWB
(C4)x3
Video CD PWB
Note 1:
How to open the changer manually. (Fig. 8-3)
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. 9-1)
3. After that, push forward the CD slide holder.
Note 2:
1.After removingtheconnector fortheopticalpickupfrom the
connector, wrap the conductive aluminium foil around the
front end of the connector remove to protect the optical
pickup from electrostatic damage.
Note 3:
1. Be careful not to break the claw of the CD mechanism.
2.Whenfining back thecamgear assembly, let itlockby front
movement.
Lock Lever
CD-BK2100V
CD-BK2100V

– 9 –
CD-BK2100V
Figure 9-1
Figure 9-2
Figure 9-3
Figure 9-4
Figure 9-5
Figure 9-6
Clamp Lever
Cam Gear Rib
(F1)x1
ø3x6mm
(H1)x2
ø3x10mm
(F1)x1
ø3x10mm
(F2)x3
(F2)x1
(E3)x1
(E4)x1
(E2)x2
(E2)x1
Main PWB
(E2)x1
Power
Supply
PWB
Power
Supply
PWB
Display PWB
Tape
Mechanism
(G1)x2
ø3x10mm
Karaoke
PWB
(J1)x13
ø3x10mm
(J2)x1
(K1)x5
ø3x10mm
(L1)x1
ø3x10mm
(F3)x1
Display PWB
Headphones
PWB
Open
Cassette
Holder
Tape
Mechanism
Turntable
Disc Tray
(M2) x1
CD Player Unit
(M1) x2
1
3
2
(N1) x3
(N1) x3

CD-BK2100V
– 10 –
(D1)x2
ø3x10mm
(C1)x4
ø4x20mm
(B1)x4
ø4x16mm
Tweeter
Woofer
Front Panel
Sub Woofer
(C2)x1
Super
Tweeter
(E1)x4
ø3x10mm
(A1)x4
CP-BK2100
1 Front Panel 1. Front Panel ............ 10-3
2. Tip .......................... (A1) x4 10-4
2 Woofer 1. Screw ..................... (B1) x4 10-5
3 Sub Woofer 1. Screw ..................... (C1) x4 10-5
2. Sub Woofer Ring ... (C2) x1
4 Tweeter 1. Screw ..................... (D1) x2 10-5
5 Super Tweeter 1. Screw ..................... (E1) x4 10-4
STEP REMOVAL PROCEDURE FIGURE
Figure 10-3
Figure 10-4
Figure 10-2
(Q2) x3
(Q1) x1
(R1) x5
(Q1) x1
Loading
Motor
PWB
CD
Mechanism
(P3) x2
(P2) x2
(P3) x2
CD Video
PWB CD Player
Base
(P1)x1
ø3x8mm
Figure 10-1
Figure 10-5
Driver should
be pried away
from Speaker Box.
Screwdriver
Front Panel

– 11 –
CD-BK2100V
REMOVING AND REINSTALLING THE MAIN PARTS
TAPE MECHANISM SECTION
Perform steps 1 to 8 and 10 of the disassembly method to
remove the tape mechanism.
How to remove the record/playback and erase
heads (TAPE 2) (See Fig. 11-1)
1. When you remove the screw (A1) x 2 pcs., the recording/
playback head and three-dimensional head of the erasing
head can be removed.
How to remove the playback head (TAPE 1)
(See Fig. 11-2)
1. When you remove the screw (B1) x 2 pcs., the playback
head.
How to remove the pinch roller (Tape 1/2)
(See Fig. 11-3)
1. Carefully bend the pinch roller pawl in the direction of the
arrow <A>, and remove the pinch roller (C1) x 1 pc., in the
direction of the arrow <B>.
Note:
When installing the pinch roller, pay attention to the spring
mounting position.
How to remove the belt (TAPE 2) (See Fig. 11-4)
1. Remove the main belt (D1) x 1 pc., from the motor side.
2. Remove the FF/REW belt (D2) x 1 pc.
How to remove the belt (TAPE 1) (See Fig. 11-4)
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. 11-5)
1. Remove the screws (F1) x 2 pcs., to remove the motor.
Figure 11-1
Figure 11-2
Figure 11-3
Figure 11-4Figure 11-5
TAPE 2 TAPE 1
Main Belt
(E1)x1
TAPE 2
Main Belt
(D1)x1
TAPE 1
Main Belt
FF/REW
Belt
(D2)x1
FF/REW
Belt
(E2)x1
Motor
Motor
(D1)x1
(E1)x1
(A1)x2
Ø2x6mm
TAPE 2
Record/Playback
Head
Erase Head
(F1) x2
Ø2.6x5mm
Motor
(B1)x1
Ø2x9mm (B1)x1
Ø2x5mm
TAPE 1
Playback
Head
Pinch Roller
(C1)x1 <A>
Pull
<B>
Pull
Pinch
Roller
Pawl

CD-BK2100V
– 12 –
How to remove the pickup (See Fig. 12-2)
1. Remove the stop washer (B1) x 1 pc., to remove the gear
(B2) x 1 pc.
2.Removethescrews(B3)x2pcs.,toremovetheshaft(B4)x
1 pc.
3. Remove the pickup.
Figure 12-2
CD MECHANISM SECTION
Perform steps 1, 2, 3, 12, 13, 14 and 15 of the disassembly
method to remove the CD mechanism.
Figure 12-1
Note
After removing the connector for the optical pickup from the
connector, wrap the conductive aluminium foil around the
front end of connector remove to protect the optical pickup
from electrostatic damage.
(A1)x3
T/T Up/Down Motor
Disc Tray
(A1)x2
Pulley
Drive Belt
(A2) x1
Motor
(B3) x2
ø2.6 x6mm
Shaft
(B4) x1
Stop Washer
(B1) x1
Gear
(B2) x1
CD Mechanism
Pickup
ADJUSTMENT
MECHANISM SECTION
•Driving Force Check
Torque Meter Specified Value
Play: TW-2111 Tape 1: Over 80 g
Tape 2: Over 80 g
•Torque Check
Torque Meter
Tape 2
Play: TW-2111 30 to 80 g. cm 30 to 80 g.cm
Fast forward: TW-2231 — 70 to 180 g.cm
Rewind: TW-2231 — 70 to 180 g.cm
Specified Value
Tape 1
Specified
Value
Adjusting
Point Instrument
Connection
Test Tape
Normal MTT-111 Variable 3,000 ±30 Hz Speaker
speed Resistor in terminal
motor. (Load
(MM1) resistance:
6 ohms)
•Tape Speed
Figure 12-3
TAPE MECHANISM
Motor
Variable
Resistor in motor
How to remove the T/T Up/Down motor
(See Fig. 12-1)
1. Bend the hooks (A1) x 5 pcs., to remove the T/T Up/Down
motor.
2. Remove the drive belt (A2) x 1 pc.

– 13 –
CD-BK2100V
CD SECTION
• AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
*1. Input: Antenna Output: TP302
*2. Input: Antenna Output: TP301
TUNER SECTION
fL: Low-range frequency
fH: High-range frequency
AM IF 450 kHz 1,602 kHz T351 *1
AM Band — 531 kHz (fL): T306 *2
Coverage 1.1 ±0.1 V
AM Tracking 990 kHz 990 kHz (fL): T303 *1
*1. Input: Antenna, Output: TP301
*2. Input: Antenna, Output: Speaker terminal
•FM RF
Signal generator: 1 kHz, 40 kHz dev., FM modulated
FM Band — 87.50 MHz T301(fL); * 1
Coverage
1.3 V ±50 mV
FM RF 98.00 MHz 98.00 MHz L312 *2
(10-30 dB)
Test Stage Instrument
Connection
Frequency Frequency
Display Setting/ Adjusting
Point
Figure 13-1 ADJUSTMENT POINTS
Test Stage Frequency Frequency
Display Setting/
Adjusting
Parts
Instrument
Connection
IC302
IC303
TP302
TP301
R357
AM IF
FM IF
T303
T306
AM
TRACKING fL
AM BAND
COVERAGE fL
FM BAND
COVERAGE fL
T351
MAIN PWB
CNP302
AM LOOP
ANTENNA
T301
T302 L312
SO302
FM ANTENNA
1
1
20
1
Figure 13-2
CD ERROR CODE DESCRIPTION
Error State Code
[Servo System Error]
0001 Cannot detect Pickup-in SW
0002 DSP access error
[Error during close operation]
0101 Open/Close SW not functioning (Low →High)
0103 Open/Close SW not functioning (High →Low)
[Error during open operation]
0201 Open/Close SW not functioning (Low →High)
0203 Open/Close SW not functioning (High →Low)
[Error during skip operation]
0302 Pickup-in SW is not detected
0306 During Disc 1 search, Open/Close SW or Clamp SW
or Disc SW do not change to low.
0307 Clamp SW not function (Low →High)
0308 Clamp SW not function (High →Low)
Since this CD system incorporates the following automatic
adjustment functions, readjustment is not needed when
replacingthepickup.Therefore,differentPWBsandpickups
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.
13-2 EFBL)
(3)Gainadjustment(ThegainiscompensatedinsidetheIC
sothattheloopgainat the gain crossover frequency will
be 0 dB.)
* Focus gain adjustment
* Tracking gain adjustment
Adjustment
T
T
EFBL
FDO
TE
Stopped
CH1=500mV
DC 10:1
CH2=200mV
DC 10:1
CH3=1V
DC 10:1
500ms/div
(500ms/div)
NORM:20kS/s
1
2
3
=Record Length=
Smoothing : ON CH1 : 0.000V
CH2 : 0.000V Main : 100K Zoom : 2k Mode : SINGLE Type : EDGE CH1
Delay : 0.0ns
Hold off : 0.2µs
CH3 : 0.00V
CH4 : 0.00V
BW : FULL
=Trigger==Filter= =Offset=
CH2
v/DIV
200mV
1999/04/05 20:26:47

CD-BK2100V
– 14 –
•The indicated voltage in each section is the one measured
by Digital Multimeter between such a section and the chas-
sis with no signal given.
1. In the tuner section,
( ) indicates AM
< > indicates FM stereo
2. In the main section, a tape is being played back.
3. In the deck section, a tape is being played back.
( ) indicates the record state.
4. In the power section, a tape is being played back.
5. In the CD section, the CD is stopped.
•Parts marked with “ ” ( ) are important for
maintaining the safety of the set. Be sure to replace these
parts with specified ones for maintaining the safety and
performance of the set.
NOTES ON SCHEMATIC DIAGRAM
•Resistor:
To differentiate the units of resistors, such symbol as K and
M are used: the symbol K means 1000 ohm and the symbol
M means 1000 kohm and the resistor without any symbol is
ohm-type resistor. Besides, the one with “Fusible” is a fuse
type.
•Capacitor:
To indicate the unit of capacitor, a symbol P is used: this
symbol P means micro-micro-farad and the unit of the
capacitor without such a symbol is microfarad. As to
electrolyticcapacitor,theexpression“capacitance/withstand
voltage” is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene type
•Schematic diagram and Wiring Side of P.W.Board for this
model are subject to change for improvement without prior
notice.
REF. NO DESCRIPTION POSITION POSITION
SW714 DIMMER ON—OFF
SW715 X-BASS/MEMO ON—OFF
SW716 EQUALIZER ON—OFF
SW722 CD ON—OFF
SW723 TAPE ON—OFF
SW724 TUNING DOWN ON—OFF
SW725 MEMORY/SET ON—OFF
SW726 PRESET DOWN ON—OFF
SW727 PRESET UP ON—OFF
SW728 PLAY ON—OFF
SW729 STOP ON—OFF
SW730 REV PLAY ON—OFF
SW731 REC/PAUSE ON—OFF
SW732 TUNING/TIME UP ON—OFF
SW733 VIDEO/AUX ON—OFF
SW734 TUNER (BAND) ON—OFF
SW735 REV MODE ON—OFF
SW801 VOLTAGE SELECTOR 230-240V
REF. NO DESCRIPTION
SW1 OPEN/CLOSE ON—OFF
SW2 CLAMP ON—OFF
SW3 DISC NUMBER ON—OFF
SW4 PICKUP IN ON—OFF
SW601 SPAN SELECTOR 9kHz/50kHz
SW701 ON/STAND-BY ON—OFF
SW702 CLOCK ON—OFF
SW703 TIMER ON—OFF
SW704 AUDIO MODE ON—OFF
SW705 PBC ON—OFF
SW706 OSD ON—OFF
SW707 DIGEST ON—OFF
SW708 BOOK MARK ON—OFF
SW709 DISC 1 ON—OFF
SW710 DISC 2 ON—OFF
SW711 DISC 3 ON—OFF
SW712 DISC SKIP ON—OFF
SW713 OPEN/CLOSE ON—OFF
Figure 14 TYPES OF TRANSISTOR AND LED
(1) (2) (3)
(S) (G) (D)
E C B
FRONT
VIEW
KTA1266 GR
KRC102 M
KRC102 S
KRC104 M
KRC104 S
KTA1271 Y
KTA1274 Y
2SC1845 F
KTA1273 Y
KTC3203 Y
KTC3199 GR
KTC3194 Y
2SA1015 GR
KTC2026
4204SRT7
BCE
FRONT
VIEW
FRONT
VIEW
KDV147B
SVC348S
KTA1298 Y
KTA1504 GR
KTC3265 Y
TOP
VIEW
3
21

– 15 –
CD-BK2100V
WAVEFORMS OF CD CIRCUIT
T
FDO
TDO
Stopped
CH1=500mV
DC 10:1 CH3=500mV DC 10:1 500ms/div
(500ms/div)
NORM:20kS/s
1
3
=Record Length=
Smoothing : ON CH1 : 0.000V
CH2 : 0.0V Main : 100K Zoom : 2K Mode : AUTO Type : EDGE CH1
Delay : 0.0ns
Hold off : 0.2µs
CH3 : 0.000V
CH4 : 0.00V
BW : FULL
=Trigger==Filter= =Offset=
CH1
v/DIV
500mV
1IC2 24
2IC2 23
T
FDO
DRF
TE
Stopped
CH1=500mV
DC 10:1 CH2=10V DC 10:1 CH3=1V DC 10:1 500ms/div
(500ms/div)
NORM:20kS/s
1
2
3
=Record Length=
Smoothing : ON CH1 : 0.000V
CH2 : 0.0V Main : 100K Zoom : 2K Mode : AUTO Type : EDGE CH1
Delay : 0.0ns
Hold off : 0.2µs
CH3 : 0.00V
CH4 : 0.00V
BW : FULL
=Trigger==Filter= =Offset=
-3div -1div 0div +1div +3div
CH Position To
CH2
Position
0.20div
1
IC2 24
3
IC2 72
4
IC1 18 ,
IC2 16
Vp-p=1.0V~1.3V
0.5mV/div,0.5µsec/div
5
IC1 27
T
T
TE
DRF
Stopped
CH1=10V
DC 10:1 CH2=1V DC 10:1 100ms/div
(100ms/div)
NORM:100kS/s
2
1
=Record Length=
Smoothing : ON CH1 : 0.0V
CH2 : 0.00V Main : 100K Zoom : 2K Mode : NORMAL Type : EDGE CH1
Delay : 2.924ms
Hold off : 0.2µs
CH3 : 0.00V
CH4 : 0.00V
BW : FULL
=Trigger=
=Filter= =Offset=
3
IC2 72
4
IC1 18 ,
IC2 16
T
T
FDO
SPDO
Stopped
CH1=200mV
DC 10:1 CH2=500mV DC 10:1 500ms/div
1999/04/07 09:51:15
(500ms/div)
NORM:20kS/s
2
1
=Record Length=
Smoothing : ON CH1 : 0.000V
CH2 : 0.000V Main : 100K Zoom : 2K Mode : NORMAL Type : EDGE CH2
Delay : 2.924ms
Hold off : 0.2µs
CH3 : 0.00V
CH4 : 0.00V
BW : FULL
=Trigger=
=Filter= =Offset=
1
IC2 24
6
IC2 25
T
FDO
PDO2
PDO1
Stopped
CH1=500mV
DC 10:1 CH3=1V DC 10:1 CH4=1V DC 10:1 500ms/div
(500ms/div)
NORM:20kS/s
1
4
3
=Record Length=
Smoothing : ON CH1 : 0.000V
CH2 : 0.0V Main : 100K Zoom : 2K Mode : AUTO Type : EDGE CH2
Delay : 0.0ns
Hold off : 0.2µs
CH3 : 0.00V
CH4 : 0.00V
BW : FULL
=Trigger==Filter= =Offset=
CH1
v/DIV
500mV
1999/04/05 17:33:17
1
IC2 24
7
IC2 1
8
IC2 2
T
T
DOUT
Stopped
CH1=2V
DC 10:1 500ns/div
1999/04/07 09:25:28
(500ns/div)
NORM:200MS/s
1
=Record Length=
Smoothing : ON CH1 : 0.00V
CH2 : 0.00V Main : 1K Zoom : 100 Mode : NORMAL Type : EDGE CH1
Delay : 2.887ms
Hold off : 0.2µs
CH3 : 0.00V
CH4 : 0.00V
BW : FULL
=Trigger=
=Filter= =Offset=
9
IC2 37
T
T
DATA
DATACK
LRSY
Stopped
CH1=2V
DC 10:1 CH2=2V DC 10:1 CH3=2V DC 10:1 5us/div
(5us/div)
NORM:100kS/s
1
2
3
=Record Length=
Smoothing : ON CH1 : 0.00V
CH2 : 0.00V Main : 5K Zoom : 100 Mode : AUTO Type : EDGE CH3
Delay : 0.0ns
Hold off : 0.2µs
CH3 : 0.00V
CH4 : 0.00V
BW : FULL
=Trigger==Filter= =Offset=
CH3
v/DIV
2 V
1999/04/05 20:50:17
10
IC2 57
IC2 58
IC2 59
11
12
T
T
EFBL
FDO
TE
Stopped
CH1=500mV
DC 10:1
CH2=200mV
DC 10:1
CH3=1V
DC 10:1
500ms/div
(500ms/div)
NORM:20kS/s
1
2
3
=Record Length=
Smoothing : ON CH1 : 0.000V
CH2 : 0.000V Main : 100K Zoom : 2k Mode : SINGLE Type : EDGE CH1
Delay : 0.0ns
Hold off : 0.2µs
CH3 : 0.00V
CH4 : 0.00V
BW : FULL
=Trigger==Filter= =Offset=
CH2
v/DIV
200mV
1999/04/05 20:26:47
1
IC2 24
4
IC1 18 ,
IC2 16
IC1 13 ,
IC2 22
13

CD-BK2100V
– 16 –
Figure 16 BLOCK DIAGRAM (1/4)
CNP12
CNP11
Q2
+3.3V
+5V
CONT5
CONT2
CONT3
CONT4
CONT7
CONT6
SLD0
SPD0
FD0 TD0
+5V
TO DISPLAY SECTION
CLAMP SW
CDINT
WRQ
CE
DO
CLK
DI
CD RES
GND
DRF
CNS4
BI4 CNP4
M2
SLED
MOTOR
M1
SPINDLE
MOTOR
MM
TRACKING COIL
FOCUS COIL
PICKUP UNIT
TE
FE
RFEV
HFL
VVDD
ADAVDD
VDD
LVDD
RVDD
XVDD
VDD5V
RFEV
FE-
FE
TE-
TE
HFL
+3.3V
CONSTANT
VOLTAGE
+5V
Q1
Q3
LASER
DRIVER
LDD
PD
VCC3 VCC2 VCC4 VCC1
TIN2
TIN1
FIN2
FIN1
IC3
M63001FP
FOCUS/TRACKING/
SPIN/SLED DRIVER
IC1
LA9235M
SERVO AMP.
TO MAIN SECTION
(TO IC401)
R-CH
L-CH
AGND
DGND
+5V(+B5) RCHO
RVSS
LVSS
LCHO
IC2
LC78636E
SERVO/SIGNAL
CONTROL
-
+
M
SW1
OPEN/
CLOSE
XL1
16.9344MHz
6
5
4
3
3
2
5
4
1
1
2
3
4
7
8
2
1
7
8
9
10
1
2
4
3
5
SW2
CLAMP
SW3
DISC
NUMBER
M3
T/T
UP/DOWN
MOTOR
6
1
2
4
3
5
6
1
2
4
3
5
6
75
76
45
53
46
47
48
32
31
30
40
65 66 67 68 69 70 71 72
CE CL DI DO INT WRQ
RES
DEF
52 51
XOUT XIN
73
5
18
36
44
49
50
7
3
14
15
16
19
23
242526
3359
5735545556
17
18
19
20
21
22
30 23 11 9
14
5
6
7
15
16
26
27
2
17
25
41
42
38
39
35 29 22 21 14 8
40
18 24 23 28
SW4
PICKUP IN
+3.3V
QV3
+B5
XV1
4.19MHz
7
XV2
27MHz
ICV1
MPEG CONTROLLER
IX0352AW
ICV2
D61012GC
MPEG DECODER
ICV3
SDM4260C
DRAM
~~
~
~
~~
~ ~ ~~
~
~~ ~~~~
~
~~
~
~
MBUSY MCK MDO MDI X1
X2
PWR_MPEG
+B3
+B3
ICV4
NJM2267M
VIDEO
OPERATION
AMP.
CNPV3
JK671
VIDO OUT
HD7
HD0
AUDO AUBCK AULRCK CDC2PO CDLRCK CDBCK CDI
X1 X2
VOUT1
VDD,CKSEL,HSELX, HSELA,AVDD HD7
HD4 HD3
HD0
MA8
MA4
MA3
MA0
MRAS
MWE
MCAS
MD5
MD7
MD4
MD0
MD11
MD8
~
~~
MD15
MD12
VDD
DQ0
DQ3
DQ4
DQ7
DQ8
DQ11
DQ12
DQ15
WE
RAS
A0
A3
A4
A8
9
14
16
22
20
1918
40
10 24 35
64
1
15
17
23
25
36
44
51
63
75
76
83
84
92
18
257
10
14
38
2
1
6
20
5
7
86
1
7
2
6
35 32 33959798 99
42
45
10
13
14
16
19
22
26
31
34
36
39
21273545
~~~
~~
48
49
52
53
54
56
58
62
65
68
70
73 13
57
41
15
17
25
33
42
45
50
~
~
QV2
~

– 17 –
CD-BK2100V
4
42 41 40 40
7 8
36
7
14
8922
35
9 12
32 31 15
13
23
1 2 3 4 5 6 7 8 9 10 11
22
ICK1
M65856SP
MIC AMP.
ICK2
M65847AFP1
KEY CONTROL
JK2
MIC2
DATA
MIC1IN
MICLOUT
MIC1VOLIN MIC2IN MIC2OUT MIC2VOLIN
SDATA SCK STROBE LPF1N
15
MIXOUT
CLDCK
LATCH
SOURCE OUT
ROUT
RIN
LIN
KEYCON IN
VCC
GND
LOUT
QK2
QK1
PINK1
CHASSIS
GND JK1
MIC1
BIK1
CNSK1
1 2 3 4 5 6 7 8 9 10 11
OUT(L) OUT(R) IN(L) GND(A) IN(R) GND(D) DATA CLOCK LATCH MIC IN +10V(+B4)
QK3
VRK2
MIC2
VOLUME
VRK1
MIC1
VOLUME
TO MAIN SECTION
(TO IC601)
+B4
Figure 17 BLOCK DIAGRAM (2/4)

CD-BK2100V
– 18 –
Figure 18 BLOCK DIAGRAM (3/4)
-B2
+B4
-20dB
ATT SYSTEM
MUTE
Q605
Q606
Q603
Q604
DO CL DI CE
MO/ST
+B4
SWITCHING +B4
FM/AM
IC302
LC72131
PLL(TUNER)
FM/AM
OUT
+B4
IN
P
E
L
R
BIAS
T1/T2
REC
MUTING
Q121
Q122
AC BIAS
R
L
JK601
VIDEO IN
L
L
R
R
R
L
R
L
AUX
TAPE
TUNER
CD
P.B
CNS601
CNP601
FROM CD SECTION
CNP11
ERASE
HEAD
SWITCHING
SWITCHING
SWITCHING
BIAS
Q110
Q111
Q109
Q126
SWITCHING
Q124
BIAS
OSC
Q128
L104
Q107
Q108
REC PB HEAD
TAPE 2
PB HEAD
TAPE 1
L-CH
R-CH
L-CH
R-CH
IC601
LC75341
AUDIO PROCESSOR
H/N
P.B
+B4
R
R
R
L
L
L
REC
R
L
L NF
R NF
ALC
REC
T1/T2
T1/T2
NOR/
HIGH
REF
R REC
L REC
POP REDUCE
R NF
L NF
SWITCHING
Q103-
Q106
L(T2)
R(T2)
R(T1)
L(T1)
IC101
AN7345K
PLAYBACK AND RECORD
/PLAYBACK AMP.
R
L
FM/AMMPXIN
STEREO
AM RF IN
AM OSC IN
AM IN FM IN
AM OSC OUT
FM +B FM
VT
FM OSC
OSC
X352
4.5MHZ
AM BAND
COVERAGE
AM
TRACKING
T303 T306
Q302
X351
456kHz
MO/ST
VCO
FM
DET
VCC
GNDAM IF
CF351
IC303
LA1832S
FM IF DET./FM MPX./AM IF
AM MIX
CF352
T351
FM RF
OSC
FM
L312 T301
T302
IC301
TA7358AP
FM FRONT END
BF301
B.P.F
FM
ANTENNA
AM LOOP
ANTENNA
1
2
1
3
910
18
11
16
3
8
4
15
10
9
7
7
7
1
81718
18
4
21
12
13
1
2
3
20
19
7
18
10
8
17
13
21
4
5
2
3
4
6
9
16
12
15
1
5
13
8
4
3
2
1
21
7
98
517
6
21
2
1
20
22
11
17
16
15
9
6
57
13
14
12
15
16
4
7
FM OSC
CF303
FM IF
Q360
OSC BUFF
4
24 23
14
14
23
24
P.B
REC
23
1
4
8
5
~
+B4
AM IF
SO302
VDD
+5V
R
L
OPE
AMP.
KIA4558P
IC561
IC562
IC563
VCC
Q708 +3B
+3B
M
Q704
Q705
IC701
54PIN
IC701
53PIN
IC701
56PIN
IC701
55PIN
MM1
TAPE
MOTOR
SOLM1,SOLM2
SOLENOID
SWM2
T2 PLAY
SWM1
T1 PLAY
SWM4
R. PLAY
SWM3
F. PLAY
MOTOR
DRIVER
1
2
FROM KARAOKE
SECTION
CNSK1
1
2
3

– 19 –
CD-BK2100V
Figure 19 BLOCK DIAGRAM (4/4)
D801
RL801
VLOAD
+B7
SYS. STOP
RESET
IC703
KIA7042AP
RESET
Q709 Q910
+B5
M901
FAN MOTOR
M
SUB
WOOFER
MAIN
SO901
SPEAKER
TERMINAL
SW801
VOLTAGE
SELECTOR
RL902
230–240V
220V
127V
110V
RL901
Q909
+B7 +B7
+B7
+B7
+B3
+B7
VDD
VDD
VDD
+B6
LCK
CL
DI
Q801
+B4
-B2
R
R
L
L
Q901
Q902
Q903
Q904
L-OUT
R-OUT
R-OUT
L-OUT
SP. DET. Q905
Q906
Q907
Q908
UNSWITCH 5V
CD+B
+5V
A10V
M10V
+B7
+B5
+B6
+B4
+B3
Q821
IC801
KIA7805P
VOLTAGE
REGULATOR
IC802
KIA7810AP
VOLTAGE
REGULATOR
Q823
SYSTEM
MUTE
Q605
Q606
CE DI CL DO
+B4
XL701
4.1943MHz
IC903
KIA4558P
OPE AMP.
Q802
D812-D815 T802
POWER
TRANSFORMER
D804-D807
D803
D802
IC702
BU2092F
INPUT/OUTPUT
EXPANDER
F805
T2A L 250V
+Vcc
STK402-071
F801
T4A L 250V
F800
T4A L 250V
F803
T5A L 250V
F802
T5A L 250V
-Vcc
-Vcc
+Vcc
IC901
POWER AMP.
IC902
STK402-040
POWER AMP.
BIAS
T1/T2
REC
AVDD
KEY
SW701-SW716
SW722-SW735
TO CD
SECTION
Q701-Q703
Q710-Q712
AC POWER
SUPPLY CORD
IC701
IX0335AW
SYSTEM
MICROCOMPUTER
FL701
DISPLAY
1
32
7
4
6
1
8
2
3
5
18
85
80
33
31
1
2
3
45
1235713
910
15 16
17
20 21
24 23 24 25
86
91
92
79
39
38
36
34
1
15 10
7
13
9
8
10
1
15
8913
7
12
13 4
2
1
3
7
127
28
36
2151
20
53 56 57 58
T.F
CONSTANT
VOLTAGE
REGULATOR
~~
~~~
~
11 12
100
52 51 50 49 48 47 46 44 43 42 41 40
37
35
JK670
HEADPHONES
14
~~~
29
14
8
5
~
+B4
RESET
T801
POWER TRANSFORMER
AC 110/127/220/
230–240V
50/60Hz
R
L
+B1
VF2
VF1
-VF
CONSTANT
VOLTAGE
-B2
+B2
-B1
R
L
DRIVER
JOG701
JOG
RX701
REMOTE
SENSOR
10Hz
IC701
IX0335AW
SYSTEM
MICROCOMPUTER
63Hz
P
SW601
SPAN
SELECTOR
27

CD-BK2100V
– 20 –
A
B
C
D
E
F
G
H
123456
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17 16151413121110
98765432
2
1
1
AUEMP
AV_GND
D_GND
RES
TESTPOINT
MBUSY
+5V +B
+B
+B
+B
+B
+B +B
+B
+
+B
+
+B
+B
DATAD
C2PO
BCLK
LRCK
SBUSY
AULRCK
AUDO
AUCLK
AUBCK
MCLK
MDO
MDI
3.3V
TO CD SECTION
P23 11-C, P23 11-D, P23 11-F
GND
SCK
SI
SO
RESET
VDD
VPP
TO CD SECTION
P23 11-C, P23 11-D, P23 11-F
7
6
5
4
1
2
3
KEY CONT.
VOCAL CANCEL
HD0
HD1
K_C_STRB
K_C_CLK
K_C_DATA
VSS0
VDD0
PWR_MPEG
MDI
MDO
MCK
SBUSY
MBUSY
VDD1
AVSS
HD7
HD6
HD5
HD4
HD3
HD2
AVREF
AVDD RESET
XT2
XT1
IC
X2 X1
VSS1
INT
HCS
HRD
HWR
HDAK
HA
MPEG RESET
CD-LD M-
CD-LD M+
CD-SOL
MO_SPEED
23
1
10
8
18
4
3
2
16
11
12
14
13
15
19
17
6
1
7
5
9
ICV1
IX0352AW
MPEG CONTROLLER
QV2
KTA1298 Y
CV1
47/6.3
RV1
10K
RV2
1K DV4
KDS193
QV3
KRC104 S
RV86
4.7K
RV11
1K
CV4
47/6.3
CV5 0.22
L64
0.82µH
RV93 10K
RV15
1K
RV94 10K
CV2
0.22
RV20
1K
XV1
4.19MHz
RV22 1K
RV59 1K
RV37
1K
RV38 3.9K
RV39 3.9K
RV40 3.9K
RV41 3.9K
RV42 3.9K RV43 3.9K
RV44 3.9K
RV45 3.9K
RV46 3.9K
RV47 3.9K
RV48 3.9K
RV49 3.9K
RV50 3.9K
XV2
27MH
z
RV85
10K
RV84
4.7K
DV5
KDS193 QV4
KTA1298 Y
Figure 20 SCHEMATIC DIAGRAM (1/13)
• NOTES ON SCHEMATIC DIAGRAM can be found on page 14.