Sharp CD-BK1600V User manual

– 1 –
CD-BK1600V/1800V/190V
No. S5041CDBK1600
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 .............................................................................................................................. 15
BLOCK DIAGRAM ........................................................................................................................................................... 16
SCHEMATIC DIAGRAM ...................................................................................................................................................20
WIRING SIDE OF P.W.BOARD........................................................................................................................................31
VOLTAGE ........................................................................................................................................................................ 39
WAVEFORMS OF CD CIRCUIT...................................................................................................................................... 40
TROUBLESHOOTING ..................................................................................................................................................... 41
FUNCTION TABLE OF IC................................................................................................................................................ 45
FL DISPLAY......................................................................................................................................................................56
REPLACEMENT PARTS LIST/EXPLODED VIEW
CD-BK190V
• 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.
CD-BK190V Video CD Mini System consisting of
CD-BK190V (main unit), CP-BK190 (front speakers) and
GBOXS0041AWM1 (surround speakers).
SHARP CORPORATION
CD-BK1800V
CD-BK1800V Video CD Mini System consisting of
CD-BK1800V (main unit), CP-BK1800 (front speakers) and
GBOXS0041AWM1 (surround speakers).
Illustration: CD-BK1600V
CD-BK1600V Video CD Mini System consisting of
CD-BK1600V (main unit) and CP-BK1600 (speaker system).
CD-BK1600V
NTSC/PAL
Illustration: CD-BK1800V
Illustration: CD-BK190V
VIDEO CD MINI SYSTEM
MODEL
MODEL
MODEL

CD-BK1600V/1800V/190V
– 2 –
SAFETY PRECAUTION FOR SERVICE MANUAL
Precaution to be taken when replacing and servicing the Laser Pickup.
The AEL (Accessible Emission Level) of Laser Power Output for this model is specified to be lower than Class 1 Requirements.
However, the following precautions must be observed during servicing to protect your eyes against exposure to the Laser beam.
(1) When the cabinet has been removed, the power is turned on without a compact disc, and the Pickup is on a position outer than
the lead-in position, the Laser will light for several seconds to detect a disc. Do not look into the Pickup Lens.
(2) TheLaserPowerOutputofthePickupinsidetheunitandreplacementservicepartshavealreadybeenadjustedpriortoshipping.
(3) No adjustment to the Laser Power should be attempted when replacing or servicing the Pickup.
(4) Under no circumstances look directly into the Pickup Lens at any time.
(5) CAUTION - Use of controls or adjustments, or performance of procedures other than those specified herein may result in
hazardous radiation exposure.
VOLTAGE SELECTION
Thevoltageselectorislocatedontherearpaneloftheunit.Ifadjustmentisnecessary,useascrewdriverinordertoturntheselector
in either direction until the correct voltage figure is displayed in the window.
QACCB0012AW00
Figure 2 AC POWER SUPPLY CORD AND PLUG ADAPTOR
QACCE0007AW00
QACCA0004AW00
QACCJ0006AW00
QPLGA0003AWZZ QPLGA0004AWZZ
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.

– 3 –
CD-BK1600V/1800V/190V
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
SPECIFICATIONS
CD-BK1600V/1800V/190V CP-BK1600V
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: 100 W
Dimensions: Width; 270 mm (10-5/8")
Height; 330 mm (13")
Depth; 355 mm (14")
Weight: 6.8 kg (14.9 lbs.)
Output power: MPO; 160 W (80 W + 80 W) (10 %
T.H.D.)
RMS; 100 W (50 W + 50 W) (10 %
T.H.D.)
RMS; 74 W (37 W + 37 W) (0.9 %
T.H.D.)
Input terminals: Video/Auxiliary (audio signal); 500
mV/47 kohms
Microphone 1/2; 1 mV/600 ohms
Output terminals:
Front speakers; 6 ohms (BK1600V)
Front speakers; 8 ohms
Headphones; 16-50 ohms (recom-
mended; 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 re-
sponse: 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 re-
sponse: 50 - 14,000 Hz (Normal tape)
Signal/noise ratio: 55 dB (TAPE 1, playback)
50 dB
(TAPE 2, recording/playback)
Wow and flutter: 0.3 % (WRMS)
Type: 3-way [10 cm (4") woofer 2 and
5 cm (2") tweeter]
Maximum input
power: 100 W
Rated input power: 50 W
Impedance: 6 ohms
Dimensions: Width; 231.5 mm (9-1/8")
Height; 330 mm (13")
Depth; 210 mm (8-1/4")
Weight: 3.1 kg (6.8 lbs.)/each
(BK1800V/190V)
(BK1800V/190V Only )
Surround speakers; 16 ohms
Type: 3-way [10 cm (4") woofer 2 and
5 cm (2") t weeter]
Maximum input
power: 80 W
Rated input power: 40 W
Impedance: 8 ohms
Dimensions: Width; 220 mm (8-11/16")
Height; 330 mm (13")
Depth; 227 mm (8-15/16")
Weight: 3.0 kg (6.6 lbs.)/each
Type: 10 cm (4") full-range speaker
Maximum input
power: 30 W
Rated input power: 15 W
Impedance: 16 ohms
Dimensions: Width; 170 mm (6-3/4")
Height; 170 mm (6-3/4")
Depth; 88 mm (3-1/2")
Weight: 0.5 kg (1.0 lbs.)/each
Type: 3-way [10 cm (4") woofer 2 and
5 cm (2") t weeter]
Maximum input
power: 80 W
Rated input power: 40 W
Impedance: 8 ohms
Dimensions: Width; 231.5 mm (9-1/8")
Height; 330 mm (13")
Depth; 210 mm (8-1/4")
Weight: 3.1 kg (6.8 lbs.)/each
CP-BK1800V
CP-BK190V
Specifications for this model are subject to change without
prior notice.
GBOXS0041AWM1

CD-BK1600V/1800V/190V
– 4 –
NAMES OF PARTS
CD-BK1600V/1800V/190V
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 Up/Down Buttons
15.Extra Bass/Demo Mode Button
16.Equalizer Mode Selector Button
17.Tuning and Time Up/Down Buttons
18.Memory/Set Button
19.(VCD) Skip/Previous Button
(CD) Track Down/Review Button
(TUNER) Preset Down Button
(TAPE 2) Fast Wind Button
20.(VCD) Skip/Next Button
(CD) Track Up/Cue Button
(TUNER) Preset Up Button
(TAPE 2) Fast Wind Button
21.(TAPE 2) Record Pause Button
22.(VCD/CD) Disc Skip Button
23.(VCD/CD) Open/Close 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.Microphone Sockets
29.Microphone Level Controls
30.(TAPE 1) Cassette Compartment
31.(TAPE 2) Cassette Compartment
2
7
8
9
10
11
12 22 23
345
14
15
13
6
18 19 20 21
1
16
17
25 27
24 26
28 29
30 31
Display
1.FM Stereo Mode Indicator
2.Extra Bass Indicator
3.FM Stereo Indicator
4.Karaoke Mode Indicator
5.(VCD/CD) Repeat Indicator
6.Spectrum Analyzer/Volume Level Indicator
7.(TAPE 1) Play Indicator
(TAPE 2) Forward Play Indicator
8.(VCD/CD) Pause Indicator
9.(VCD/CD) Play Indicator
10.(TAPE 2) Reverse Mode Indicator
11.(TAPE 2) Reverse Play Indicator
12.(TAPE 2) Record Indicator
13.(VCD/CD) Disc Number Indicators
14.Timer Play Indicator
15.Sleep Indicator
16.Timer Record Indicator
17.(VCD/CD/TUNER) Memory Indicator
15
123
4567
68910
11 6
12 13
14
16 17
Front panel

– 5 –
CD-BK1600V/1800V/190V
Rear panel
1.AC Voltage Selector
2.AC Power Input Socket
3.FM 75 Ohms Aerial Terminal
4.FM Aerial Earth Terminal
5.AM Loop Aerial Terminal
6.Span Selector Switch
7.Video Output Socket
8.Video/Auxiliary (Audio Signal) Input Sockets
9.Front Speaker Terminals
10.Surround Speaker Terminals (CD-BK1800V/BK190V Only)
1.Tweeter
2.Bass Reflex Duct
3.Woofer
4.Speaker Wire
2
1
3
4
5
8
6
7
9
10
1
2
1
2
4
3
1.Tweeter
2.Bass Reflex Duct
3.Woofer
4.Speaker Wire
1
2
1
2
4
3
1.Full-Range Speaker
2.Speaker Wire
1
2
CP-BK1800
CP-BK1600/BK190
GBOXS0041AWM1

CD-BK1600V/1800V/190V
– 6 –
OPERATION MANUAL
CD-BK1600V/1800V/190V
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 Wind Button
23.(VCD) Play/Repeat/Select/Resume Button
(CD) Play/Repeat Button
(TAPE 1) Play Button
(TAPE 2) Forward Play 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
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')
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.
12

– 7 –
CD-BK1600V/1800V/190V
(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-BK1600V/1800V/190V
– 8 –
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) x6 8-2
5 Main PWB 1. Screw ..................... (E1) x4 8-2,9-2
2. Socket .................... (E2) x5 9-2
3. Flat Cable............... (E3) x1
4. Lug Wire................. (E4) x1
5. Flat Wire................. (E5) x1
6 Socket PWB 1. Screw ..................... (F1) x1 9-2
2. Socket .................... (F2) x1
7 Kraoke PWB 1. Screw ..................... (G1) x2 9-3
8 Front Panel 1. Screw ..................... (H1) x2 9-2
9 Display PWB 1. Screw ..................... (J1) x15 9-4
2. Flat Cable............... (J2) x1
10 Tape Mechanism 1. Open the cassette holder. 9-4
2. Screw...................... (K1) x6
10 Headphones PWB 1. Screw ..................... (L1) x1 9-4
11 Turntable 1. Hook....................... (M1) x2 9-4
2. Cover ..................... (M2) x1
12 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
13 Video CD PWB 1. Hook....................... (P1) x3 10-1
(Note 2) 2. Socket .................... (P2) x4
14 CD Mechanism 1. Hook....................... (Q1) x2 10-2
2. Hook....................... (Q2) x3
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.Takeoffnylonbandsor wire holders where they need to
beremovedwhendisassemblingtheunit.Afterservicing
theunit,besuretorearrange the leads where they were
before disassembling.
4. Take sufficient care on static electricity of integrated
circuits and other circuits when servicing.
Figure 8-2
Figure 8-3
CD-BK1600V/1800V/190V
STEP REMOVAL PROCEDURE FIGURE
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.
Figure 8-1
Note 2:
1.After removing the connectorfortheoptical pickup from 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 the camgearassembly,let it lock by front
movement.
(B1)x4
ø3x12mm (B1)x2
ø3x10mm
Rear
Panel
(B1)x2
ø3x10mm
Side Panel
(Right)
Side Panel
(Left)
(A1)x2
ø3x12mm
(A1)x2
ø3x12mm Top Cabinet
Front Panel
(E1)x2
ø3x12mm
(C3)x1
(C1)x1
ø3x10mm
(D1)x6
ø3x10mm
CD Player
Unit
CD Tray Cover
Rear
Panel
Pull
(C3) x1
(C4)x3 (C2) x3
1
1
2
Main PWB
Video CD PWB Disc Tray
Lock Lever
CD-BK1600V/1800V/190V

– 9 –
CD-BK1600V/1800V/190V
(H1)x2
ø3x10mm
(E1)x2
ø3x10mm
(E3)x1
(E4)x1
(E2)x2
(E2)x1
(E2)x1
Main PWB
(E5)x1
Headphones
PWB
(F1)x1
ø3x10mm
Socket PWB
Front Panel
(F2)x1
(E2)x1
Record/
Playback
PWB
Tape
Mechanism
Figure 9-2
Figure 9-3
Figure 9-4
Figure 9-5
Figure 9-6
Figure 9-1
Clamp Lever
Cam Gear Rib
Display PWB
Tape
Mechanism
(G1)x2
ø3x10mm
Karaoke
PWB
(J1)x15
ø3x10mm
(J2)x1
(K1)x6
ø3x10mm
(L1)x1
ø3x10mm
Display PWB
Open
Cassette
Holder(Lift/Right)
Tape
Mechanism
Front Panel
Headphones PWB
Turntable
Disc Tray
(M2) x1
CD Player Unit
(M1) x2
1
2
(N1) x3
(N1) x3
Disc Tray
CD Player Unit

CD-BK1600V/1800V/190V
– 10 –
(B1)x2
ø3x10mm Tweeter
Speaker Box
Speaker Box
(A1) x1
Driver should
be pried away
from Speaker
Box.
(A2)x4
ø4x12mm
(A2)x4
ø4x12mm
Sub Woofer
Woofer
Screwdriver
CP-BK1600/BK190
1 Woofer/ 1. Front Panel ............ (A1) x1 10-3
Sub Woofer 2. Screw ..................... (A2) x8 10-4
2 Tweeter 1. Screw ..................... (B1) x2 10-4
STEP REMOVAL PROCEDURE FIGURE
Figure 10-4
Figure 10-1
Figure 10-6
CP-BK1800
1 Woofer/ 1. Front Panel ............ (A1) x1 10-5
Sub Woofer 2. Screw ..................... (A2) x8 10-6
2 Tweeter 1. Screw ..................... (B1) x2 10-6
STEP REMOVAL PROCEDURE FIGURE
(P2)x2
(P1)x3
(P2)x2
Video CD
PWB Disc Tray
(Q2) x3
(Q1) x1 (Q1) x1
CD
Mechanism
Disc Tray
Figure 10-2
Figure 10-3
(B1)x2
ø3x10mm
Tweeter
Speaker Box
Speaker Box
Driver should
be pried away
from Speaker
Box.
(A2)x4
ø4x12mm
(A2)x4
ø4x12mm
Sub Woofer
Woofer
(A1)x1
Screwriver
Figure 10-5

– 11 –
CD-BK1600V/1800V/190V
REMOVING AND REINSTALLING THE MAIN PARTS
TAPE MECHANISM SECTION
Perform steps 1, 2, 3, 4, 5, 7, 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.Carefullyremovetherecord/playbackheadanderasehead
screws (A1) x 2 pcs.
How to remove the playback head (Tape 1)
(See Fig. 11-2)
1. Carefully remove the playback head screws (B1) x 2 pcs.
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
(B1)x1
Ø2x9mm (B1)x1
Ø2x5mm
TAPE 1
Playback
Head
Pinch Roller
(C1)x1 <A>
Pull
<B>
Pull
Pinch
Roller
Pawl
TAPE 2 TAPE 1
Main Belt
(E1)x1
TAPE 2
Main Belt
(D1)x1
TAPE 1
Main Belt
(D1)x1
FF/REW
Belt
(D2)x1
FF/REW
Belt
(E2)x1
Motor
Motor
Main Belt
(E1)x1
(F1) x2
Ø2.6x5mm
Motor
(A1)x2
Ø2 x 6mm
TAPE 2
Record/Playback
Head
Erase Head

CD-BK1600V/1800V/190V
– 12 –
How to remove the pickup (See Fig. 12-2)
1.Removethe screws (B1) x 2 pcs., to remove the shaft (B2).
2. Remove the stop washer (B3) x 1 pc., to remove the gear
(B4).
3. Remove the pickup.
Figure 12-2
CD MECHANISM SECTION
Performsteps1,2,3,11,12,13,14and15ofthedisassembly
method to remove the CD mechanism.
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.
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.
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 ±Speaker
speed Resistor in 30 Hz terminal
motor. (Load
resistance:
6 ohms)
•Tape Speed
Figure 12-3
TAPE MECHANISM
Motor
Variable Resistor in motor
(B1) x2
ø2.6 x6mm
Shaft
(B2) x1
Stop Washer
(B3) x1
Gear
(B4) x1
CD Mechanism
Pickup
(A1)x3
T/T Up/Down Motor
Disc Tray
(A1)x2
Pulley
Drive Belt
(A2) x1
Motor

– 13 –
CD-BK1600V/1800V/190V
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
Figure 13-1 ADJUSTMENT POINTS
Test Stage Frequency Frequency
Display Setting/
Adjusting
Parts
Instrument
Connection
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 Low → High not functioning
0103 Open/Close SW High →Low not functioning
[Error during open operation]
0201 Open/Close SW Low → High not functioning
0203 Open/Close SW High →Low not functioning
[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 Low → High not functioning
0308 Clamp SW High →Low not functioning
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)Trackingbalanceadjustment(waveformdrawingFig.13-
2 EFBL)
(3)Gainadjustment(ThegainiscompensatedinsidetheIC
sothattheloopgainatthe 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 : 0.2us
CH3 : 0.00V
CH4 : 0.00V
BW : FULL
=Trigger==Filter= =Offset=
CH2
v/DIV
200mV
1999/04/05 20:26:47
IC301
R382
TP302
TP301
R357
AM IF
T303
T306
AM
TRACKING fL
FM BAND
COVERAGE fL AM BAND
COVERAGE fL
T351
MAIN PWB
CNP301
AM LOOP
ANTENNA
1
T301
T302
SO302
FM TERMINAL
FM RF
L312
FM IF
*1. Input: Antenna Output: TP301
*2. Input: Antenna Output: Speaker terminal
•FM RF
Signal generator: 400Hz, 22.5 kHz dev., FM modulated
FM Band — 87.50 MHz T301(fL): *1
Coverage 3.4 V ±0.1V
FM RF 98.00 MHz 98.00 MHz L312 *2
(10-30 dB)
Test Stage Instrument
Connection
Frequency Frequency
Display Setting/ Adjusting
Point

CD-BK1600V/1800V/190V
– 14 –
Function:-CD test mode.
-Enter test mode.
C D T E S T
OPEN/CLOSE operation is using manual.
<< >>, << >> buttons make pick's slide possible.
Do TOC IL. Do normal play
When these following key is input
into PLAY key, track number can
be appoint directly
<<PLAY>> key input. <<MEMORY>> key input.
<< 1>> key: Track 4
<< 2>> key: Track 9
<< 3>> key: Track 15
<<STOP>> key input.
STOP
Laser ON.
<<MEMORY>> key input.
Tracking OFF play at that
specific point.
<<MEMORY>> key input.
Tracking ON play at that
specific point.
<<STOP>> key input.
STOP
IL isn't done
VOL — Last memory
BAL — CENTER
P.GEQ — FLAT
X-BASS — OFF
To cancel : Power OFF
Sliding the PICKUP with
<< >>, << >> button
must only be in STOP mode.
•TEST MODE
Setting of test mode
Any one test mode can be set by pressing several keys as follows.
<X-BASS> + <CD> + <POWER> TEST: CD operation test

– 15 –
CD-BK1600V/1800V/190V
•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
SW614 VOLUME UP ON—OFF
SW615 VOLUME DOWN ON—OFF
SW616 CD ON—OFF
SW617 TAPE ON—OFF
SW618 TUNING /TIME DOWN ON—OFF
SW619 MEMORY/SET ON—OFF
SW620 REWIND ON—OFF
SW621 FAST FORWARD ON—OFF
SW622 PLAY/REPEAT ON—OFF
SW623 STOP ON—OFF
SW624 REVERSE PLAY ON—OFF
SW625 REC/PAUSE ON—OFF
SW626 TUNING/TIME UP ON—OFF
SW627 VIDEO/AUX ON—OFF
SW628 TUNER (BAND) ON—OFF
SW629 REVERSE MODE ON—OFF
SW801 VOLTAGE SELECTOR 110—127—
220—230-240
REF. NO DESCRIPTION
SW1 OPEN/CLOSE ON—OFF
SW2 CLAMP ON—OFF
SW3 DISC NUMBER ON—OFF
SW4 PICKUP IN ON—OFF
SW401 SPAN SELECTOR 50/9 — 100/10
SW601 ON/STAND BY ON—OFF
SW602 CLOCK ON—OFF
SW603 TIMER/SLEEP ON—OFF
SW604 AUDIO KARAOKE ON—OFF
SW605 PBC ON—OFF
SW606 OSD/ON/OFF ON—OFF
SW607 DIGEST ON—OFF
SW608 BOOK MARK ON—OFF
SW609 DISC SKIP ON—OFF
SW610 OPEN/CLOSE ON—OFF
SW611 DIMMER ON—OFF
SW612 X-BASS/DEMO ON—OFF
SW613 EQUALIZER ON—OFF
Figure 15 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
KRC107 M
KTC3194 Y
KTC2026
4204SRT7
BCE
FRONT
VIEW
FRONT
VIEW
KDV147B
SVC348S
KTA1298 Y
KTA1504 GR
KTC3265 Y
TOP
VIEW
3
21

– 16 –
CD-BK1600V/1800V/190V
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
SBUSY
MBUSY
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
VOLTAGR
+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(+B3) RCHO
RVSS
LVSS
LCHO
IC2
LC78641E
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
11
12
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
+B3
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 SBUSY
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
64
1
15
17
23
25
36
44
51
63
75
76
83
84
92
257
1014
38
2
1
6
20
5
7
38
16
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 44
17
25
33
42
45
50
~
~
QV2
~

– 17 –
CD-BK1600V/1800V/190V
4
42 41 40
7 8
36 35
9 12
32
31
13
23
1 2 3 4 5 6 7 8 9 10 11
22
ICK1
M65856SP
MIC AMP.
JK2
MIC2
DATA
MIC1IN
MICLOUT MIC1VOLIN MIC2IN MIC2OUT MIC2VOLIN
CLDCK
LATCH
ROUT
RIN
LIN
VCC
GND
LOUT
QK2
QK1
PINK1
CHASIS
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(A)
QK3
VRK2
MIC2
VOLUME
VRK1
MIC1
VOLUME
TO MAIN SECTION
(TO IC601)
Figure 17 BLOCK DIAGRAM (2/4)

– 18 –
CD-BK1600V/1800V/190V
Figure 18 BLOCK DIAGRAM (3/4)
REC/PLAY
CL
CE
DI
MUTE
SYSTEM
Q402
Q401
DO CL DI CE
MO/ST
+B2
SWITCHING
+B2
FM/AM
IC302
LC72131
PLL(TUNER)
OUT
FM/AM
+B2
L
R
BAIS
T1/T2
MUTING
Q110
Q111
P.B.
REC
AC BIAS
R
L
SO401
VIDEO/AUX
L
L
R
R
R
L
R
L
AUX
TAPE
TUNER
CD
PB
CNS402
FROM CD
SECTION
CNP11
ERASE
HEAD
SWITCHING
SWITCHING
SWITCHING
BIAS
Q102
Q103
Q101
Q113
SWITCHING
Q112
OSC
BIAS L104
Q114
Q109
Q108
R-CH
L-CH
R-CH
L-CH
IC401
LC75341
AUDIO PROCESSOR
H/N
P.B
+B2
R
L
REC
R
L
L NF
R NF
ALC
REC
T1/T2
T1/T2HIGH
NOR/
REF
R REC
L REC
POP
REDUCE
R NF
L NF
SWITCHING
Q104~
Q107
L(T2)
R(T2)
R(T1)
L(T1)
IC101
AN7345K
PLAYBACK AND RECORD/
PLAYBACK AMP.
R
L
FM/AM
MPXIN
STEREO
AM RF IN
AM OSC IN
FM +B
Q360
VT
FM OSC
OSC
4.5MHZ
X352
COVERAGE
AM BAND
AM
TRACKING
T303
Q302
X351
MO/ST
VCO
DET
FM
FM+B
GND
AM IF
CF351
IC303
LA1832S
FM IF DET./
FM MPX./AM IF
AM MIX
CF352
T351
RF
FM
OSC
FM
L312
CF303
T302
FM FRONT END
TA7358AP
IC301
BF301
FM ANTENNA
22
3
21
4
24
2
1
818
17
5
4
3
910
18
11
16
3
15
10
9
7
8
723
14
12
13
1
2
20
19
7
18
10
8
17
13
21
4
5
2
24
23
6
9
16
14
12 15
1
5
13
8
4
3
21
21
7
98
5
6
21 24
21
20 22 11
17
15
16
9
6
5713
14
12 15
16
23
4
7
17
T301
T306
4
FM
REC PB HEAD
TAPE 2
PB HEAD
TAPE 1
R
L
SO302
AM LOOP
ANTENNA
1
21
2
CNP302
113
3
1
VDD
CNP403
FROM KARAOKE
SECTION
CNSK1
1
2
3
R
L

– 19 –
CD-BK1600V/1800V/190V
Figure 19 BLOCK DIAGRAM (4/4)
SPEAKER
SPEAKER
FRONT
SURROND
SO801
AC INPUT
SOCKET
SW801
VOLTAGE SELECTOR
220V
127V
110V
230-240V
PT801
POWER TRONSFORMER
F802
T4.0A L 250V
5V
~
REC/PLAY
VLOAD
+B4
RESET IC
SYS. STOP
RESET
IC704
KIA7042AP
Q609 Q971
+B3
FAN MOTOR
M
SO902
SPEAKER
TERMINAL
RL951
+B4 +B4
+B4
SW401
SPAN SELECTOR
+B4
VDD VDD VDD
R-OUT
L-OUT
SP. DET. Q904
Q903
Q902
Q901
UNSWITCH
+5V
A10V
+B4
+B3
+B2
+B1 –B1
~
IC852
IC851
IC841
MUTE
SYSTEM
Q402
Q401
CE DI CL DO
+B2
XL701
4.1943MHz
~
D802-D805
D801
F803
T2.0A L 250V
F801
T4.0A L 250V
~
~~~ ~
-Vcc
+Vcc
POWER AMP.
STK402-040
IC901
BAIS
T1/T2
AVDD
SW601-SW629
KEY
SECTION
TO CD
Q601-Q603
AC POWER
SUPPLY CORD
AC 110V/127/220/
230-240V, 50/60Hz
TF
IC701
IX0331AW
SYSTEM
MICROCOMPUTER
FL DISPLAY
FL701
~
~~
7
13
9
8
15
111
1
3
393837
93
92
90
63
21 36 2015
14
12
11
65
41
2
85
80
33
31
45
71112139 10 1516 17 2021 23
22 24
100
79
78
60 58575655545352 5051 49484746 444342414039
38
37
36
35
34
34
21
BK1800V/190V
ONLY
+B2
JK951
HEADPHONES
Q607 M
TAPE
MOTOR
MOTOR
DRIVER
Q606
Q605
RX701
1 2 3 +B4
LED722
Q604
Q608 SOLENOID
T2 PLAY
T1 PLAY
R. PLAY
F. PLAY
KIA7805P
VOLTAGE
REGULATOR
KIA7810AP
VOLTAGE
REGULATOR
AN78L05
CONSTANT
VOLTAGE
REGULATOR

– 20 –
CD-BK1600V/1800V/190V
Figure 20 SCHEMATIC DIAGRAM (1/12)
A
B
C
D
E
F
G
H
123456
• NOTES ON SCHEMATIC DIAGRAM can be found on page 15.
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
+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
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 10K
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
C
4
CV
9
0.2
2
C
2
XV2
XV2
27MHz
C
V
2
7
C
V
0
.
RV85
10K
RV84
4.7K
DV5
1SS133 QV4
KTA1298 Y