Sharp CDXP-125-V Service manual
CD-XP125V
SERVICE MANUAL
No. SY296CDXP125V
VIDEO CD MINI SYSTEM
MODEL CD-XP125V
CD-XP125V Video CD Mini System consisting of CD-XP125V
(main unit) and CP-XP125 (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.
NTSC/PAL
CONTENTS
Page
SAFETY PRECAUTION FOR SERVICE MANUAL ........................................................................................................... 2
VOLTAGE SELECTION..................................................................................................................................................... 2
AC POWER SUPPLY CORD
SPECIFICATIONS ............................................................................................................................................................. 3
NAMES OF PARTS ........................................................................................................................................................... 4
DISASSEMBLY.................................................................................................................................................................. 6
REMOVING AND REINSTALLING THE MAIN PARTS..................................................................................................... 8
ADJUSTMENT ................................................................................................................................................................. 10
TEST MODE .................................................................................................................................................................... 13
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 15
TYPES OF TRANSISTOR AND LED............................................................................................................................... 15
BLOCK DIAGRAM ........................................................................................................................................................... 16
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD............................................................................................. 22
VOLTAGE ........................................................................................................................................................................ 45
FUNCTION TABLE OF IC................................................................................................................................................ 46
FL DISPLAY..................................................................................................................................................................... 56
REPLACEMENT PARTS LIST/EXPLODED VIEW
AND AC PLUG ADAPTOR ................................................................................................. 2
SHARP CORPORATION
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
CD-XP125V
SAFETY PRECAUTION FOR SERVICE MANUAL
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
IMPORTANT THAT THE FOLLOWING PRECAUTIONS ARE OBSERVED DURING SERVICING TO PROTECT YOUR EYES
AGAINST EXPOSURE TO THE LASER BEAM.
1-WHEN THE CABINET IS REMOVED, THE POWER IS TURNED ON WITHOUT A COMPACT DISC IN POSITION AND THE
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.
Laser Diode Properties
Material: GaAIAs
Wavelength: 780 nm
Emission Duration: continuous
Laser Output: max. 0.6 mW
VOLTAGE SELECTION
Before operating the unit on mains, check the preset voltage. If the voltage is different from your local voltage, adjust the voltage
as follows.
Turn the selector with a screwdriver until the appropriate voltage number appears in the window (110 V, 127 V, 220 V or 230 V - 240 V AC).
AC POWER SUPPLY CORD AND AC PLUG ADAPTOR
QACCE0002SJ00
QACCA0002SJ00
QPLGA0250AFZZ
QPLGA0253AFZZ
– 2 –
CD-XP125V
CD-XP125V
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
SPECIFICA TIONS
General
Power source AC 110/127/220/230 - 240 V, 50/60 Hz
Power
consumption
Dimensions Width: 270 mm (10-5/8")
Weight 6.9 kg (15.2 lbs.)
66 W
Height: 305 mm (12")
Depth: 343 mm (13-1/2")
Amplifier
Output power MPO: 60 W (30 W + 30 W) (10 % T.H.D.)
RMS: 40 W (20 W + 20 W) (10 % T.H.D.)
RMS: 30 W (15 W + 15 W) (0.9 % T.H.D.)
Output terminals Speakers: 8 ohms
Headphones: 16 - 50 ohms (recommended:
32 ohms)
Video out: 1 Vp-p (75 ohms)
Input terminals Microphone: 1 mV/600 ohms
Video CD
Video output
format
Specifications for this model are subject to change without
prior notice.
PAL/NTSC
CD player
Type 3-disc multi-play compact disc player
Signal readout Non-contact, 3-beam semiconductor laser
D/A converter 1-bit D/A converter
Frequency
response
Dynamic range 90 dB (1 kHz)
pickup
20 - 20,000 Hz
Tuner
Frequency range FM: 88 - 108 MHz
AM: 531 - 1,602 kHz
Cassette deck
Frequency
response
Signal/noise ratio 50 dB (TAPE 1, recording/playback)
Wow and flutter 0.3 % (WRMS)
CP-XP125
Type 2-way type speaker system
Tweeter
Maximum input
power
Rated input power 20 W
Impedance 8 ohms
Dimensions Width: 200 mm (7-7/8")
Weight 2.4 kg (5.3 lbs.)/each
125 - 8,000 Hz (Normal tape)
50 dB (TAPE 2, playback)
10 cm (4") Woofer
40 W
Height: 305 mm (12")
Depth: 167 mm (6-9/16")
– 3 –
CD-XP125V
NAMES OF P ARTS
CD-XP125V
Front panel
1. Disc Tray
2. Timer Set Indicator
3. Video CD Playback Control Button
4. Video CD On Screen Display On/Off Button
5. On/Stand-by Button
6. Video CD Digest/Time Search Button
7. Video CD Skip or Previous,
CD/MP3 Disc Track Down or
Fast Reverse, Tuner Preset Down Button
8. Headphone Socket
9. Video CD Stop or Return,
CD/MP3 Disc Stop Button
10. Video CD/CD/MP3 Disc Play or Repeat Button
11. Microphone Level Control
12. Microphone Socket
13. Tape 1 Cassette Compartment
14. Video CD/CD/MP3 Disc Button
15. Tuner (Band) Button
16. Tape Button
17. Video CD Skip or Next, CD/MP3 Disc Track Up or
Fast Forward, Tuner Preset Up Button
18. Equaliser Mode Select/Extra Bass/
Demo Mode Button
19. Disc Tray Open/Close Button
20. Disc Skip Button
21. Volume Up and Down Buttons
22. Tuning Up Button
23. Tuning Down Button
24. Tape 2 Cassette Compartment
25. Tape 1 Record Button
26. Tape 1 Play Button
27. Tape 1 Rewind Button
28. Tape 1 Fast Forward Button
29. Tape 1 Stop/Eject Button
30. Tape 1 Pause Button
31. Tape 2 Play Button
32. Tape 2 Rewind Button
33. Tape 2 Fast Forward Button
34. Tape 2 Stop/Eject Button
10
11
12
13
1
2
3
4
14
15
16
5
6
7
8
9
17
18
19
20
21
22
23
24
25
26 27 28 29 30 31 32 33 34
Display
1. Disc Play Indicator
2. Disc Repeat Play Indicator
3. FM Station Indicator
4. AM Station Indicator
5. Disc Number Indicators
6. Clock Indicator
7. Sleep Indicator
8. Timer Play Indicator
9. Tape 1 Record Indicator
10. Disc Pause Indicator
11. FM Stereo Mode Indicator
12. MP3 Disc Indicator
13. FM Stereo Receiving Indicator
14. Memory Indicator
15. Disc Random Play Indicator
16. Extra Bass Indicator
1 2 3 4 11 12 13
5
6
78910 16
14
15
– 4 –
CD-XP125V
Rear panel
CD-XP125V
1. Video Output Socket
2. AC Voltage Selector
3. AC Power Input Socket
4. Transport Screw
5. FM 75 Ohms Aerial Terminal
6. FM Aerial Earth Terminal
7. AM Loop Aerial Socket
8. Span Selector Switch
9. Speaker Terminals
Remote control
1. Remote Control Transmitter
2. On/Stand-by Button
3. Disc Direct Search Buttons
4. Video CD Playback Control Auto/Off Button
5. Disc Number Select Buttons
6. Video CD On Screen Display On/Off Button
7. Video CD Digest/Time Search Button
8. Volume Up and Down Buttons
9. Video CD Skip or Previous, CD/MP3 Disc Track Down or
Fast Reverse, Tuner Preset Down Button
10. Extra Bass Button
11. Video CD/CD/MP3 Disc Button
12. Tuner (Band) Button
13. Tape Button
14. PAL/NTSC Select Button
15. Audio Mode Button
16. Video CD Auto/On Button
17. Memory/Set Button
18. Video CD Skip or Next, CD/MP3 Disc Track Up or
Fast Forward, Tuner Preset Up Button
19. Disc Random Button
20. Disc Pause Button
21. Video CD Stop or Return, CD/MP3 Disc Stop Button
22. Video CD/CD/MP3 Disc Play or Repeat Button
23. Clear Button
24. Equaliser Mode Select Button
25. Clock Button
26. Timer Button
27. Sleep Button
10
11
12
13
4
1
5
6
7
8
2
9
3
1
2
14
3
4
5
6
15
16
17
7
20
21 22 23
8
9
24 25 26 27
18
19
Buttons with " "mark in the illustration can be operated on the remote control only.
CP-XP125
1. Tweeter
2. Woofer
3. Bass Reflex Duct
4. Speaker Wire
– 5 –
1
2
3
4
CD-XP125V
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-XP125V
Side Panel
(Right)
(B1)x2
ø3x10mm
(A1)x2
ø3x16mm
Top Cabinet
Front
Panel
(A1)x2
ø3x16mm
CD-XP125V
STEP
10 Tape Mechanism 1. Open the cassette holder. 7-2
11
12
13 Turntable 1. Screw ...................... (N1) x1 7-3
14 Loading Tray 1.
15 CD Servo PWB 1. Screw ...................... (Q1) x3 7-4
16 Switch B PWB 1. Screw ...................... (R1) x2 7-4
17 CD Mechanism 1. Screw ...................... (S1) x4 7-5
Note 1:
1. After removing the connector for the optical pickup from the
REMOVAL PROCEDURE FIGURE
1 Top Cabinet 1. Screw ...................... (A1) x5 6-1
2 Side Panel 1. Screw ...................... (B1) x6 6-1
(Left/Right)
3 CD Player Unit 1. Turn on the power supply, .. 6-2
4 Rear Panel With 1. Screw ...................... (D1) x6 6-2
Video Out PWB 2. Socket ..................... (D2) x1
5 Main PWB 1. Screw ...................... (E1) x7 6-2,6-3
6 Front Panel 1. Screw .......................(F1) x3 7-1
7 Switch A PWB 1. Screw ...................... (G1) x3 7-2
8 Decode PWB 1. Screw ...................... (H1) x2 7-1
9 Display PWB 1. Screw .....................(J1) x10 7-2
Headphones PWB
Mic PWB
(Note 1) 2. Socket ..................... (Q2) x5
connector, wrap the conductive aluminium foil around the front end
of the connector so as to protect the optical pickup from electrostatic damage.
open the disc tray, take out
the CD tray cover, and close.
2. CD Tray Cover........ (C1) x1
4. Screw ...................... (C2) x2
3. Hook........................ (C3) x2
4. Socket ..................... (C4) x3
2. Socket ................... (E2) x11 6-3
2. Hook.........................(F2) x2
3. Socket ......................(F3) x1 6-3
2. Socket ..................... (G2) x1
2. Socket ..................... (H2) x1
3. Flat Cable ............... (H3) x1
2. Screw...................... (K1) x8
1. Screw ........................ L1) x1 7-2
1. Screw ......................(M1) x2 7-2
2. Spacer..................... (N2) x1
Push forward the loading tray.
2.
Inserting the flat head into the
hole, push in the direction indi-
cated by the arrow. ...
2. Spring...................... (S2) x4
(P1) x2
7-3
(A1)x1
ø3x8mm
(C3)x1
Pull
(D2)x1
Rear
Panel
(D1)x6
ø3x8mm
(E2)x1
(F3)x1
(E2)x1
Power
PWB
(B1)x2
ø3x8mm
CD Player
Unit
(C2)x2
ø3x5mm
(E2)x2
(E2)x4
Rear
Panel
Figure 6-1
(C4)x1
Figure 6-2
(E1)x2
ø3x10mm
2
(E2)x3
(C4)x1
(C4)x1
1
Side Panel
(Left)
(B1)x2
ø3x10mm
(C3)x1
Pull
(E1)x2
ø3x8mm
Main PWB
Washer
(E1)x3
ø3x10mm
Front
Panel
(C1)x1
1
2
Front
Panel
Main PWB
– 6 –
Decode PWB
Figure 6-3
CD-XP125V
(F2)x1
Power
PWB
Decode PWB
Display PWB
(J1)x10
ø2.5x10mm
Tape
Mechanism
(K1)x8
ø3x10mm
(H1)x2
ø3x6mm
(H3)x1
(H2)x1
Figure 7-1
Front Panel
(F1)x3
ø3x6mm
(M1)x2
ø2.5x10mm
Switch A
PWB
Display PWB
Front
Panel
Mic
PWB
(F2)x1
(G2)x1
CD Servo
PWB
(Q2)x2
(S1)x4
ø2.5x8mm
(S2)x4
(Q1)x3
ø3x24mm
(Q2)x1
(Q2)x1
Figure 7-4
CD Mechanism
(Q2)x1
(R1)x2
ø3x8mm
Loading
Tray
Switch B
PWB
Loading Tray
(G1)x3
ø2.5x10mm
(L1)x1
ø2.5x10mm
Loading Tray
Headphones
PWB
(N1)x1
ø3x8mm
Washer
Turntable
Figure 7-2
(N2)x1
Open
Cassette
Holder
Screwdriver
(P1)x1
Screwdriver
(P1)x1
Figure 7-4
CP-XP125
This speaker CP-XP125 is available in assembles only and
may not be disassembled.
Figure 7-3
– 7 –
CD-XP125V
REMOVING AND REINSTALLING THE MAIN PARTS
TAPE MECHANISM SECTION
Perform steps 1 to 6 and 10 of the disassembly method to
remove the tape mechanism.
How to remove the record/playback and erase
heads (TAPE 1) (See Fig. 8-1)
1. When you remove the screws (A1) x 2 pcs., the record/
playback head can be removed.
2. Move the hooks (A2) x 2 pcs., toward the center position as
shown in Fig. 8-1 and then lift the erase head.
Hook
(A2)x2
(A1)x1
ø2x7mm
(A1)x1
ø2x3mm
TAPE 1
Record/Playback
Head
How to remove the playback head (TAPE 2)
(See Fig. 8-2)
1. When you remove the screws (B1) x 2 pcs., the playback
head can be removed.
How to remove the pinch roller (TAPE 1)
(See Fig. 8-3)
1. When you remove the screw (C1) x 1 pc., the pinch roller
can be removed.
Note:
When installing the pinch roller, pay attention to the spring
mounting position.
How to remove the pinch roller (TAPE 2)
(See Fig. 8-3)
1. When you remove the screw (D1) x 1 pc., the pinch roller
can be removed.
Note:
When installing the pinch roller, pay attention to the spring
mounting position.
How to remove the tape motor (See Fig. 8-4)
1. Remove the belt.
2. Remove the screws (E1) x 6 pcs., to remove the motor
bracket.
3. Remove the screws (E2) x 3 pcs., to remove the tape motor.
Erase
Head
TAPE 1
(B1)x1
ø2x6mm
(C1)x1
ø2x4mm
Pinch Roller
Figure 8-1
(B1)x1
ø2x6mm
Figure 8-2
Playback
Head
TAPE 2
TAPE 2
(D1)x1
ø2x4mm
Pinch Roller
How to remove the belt (TAPE 1)
(See Fig. 8-5)
1. Remove the main belt (F1) x 1 pc., from the tape motor side.
2. Remove the FF/REW belt (F2) x 1 pc.
How to remove the belt (TAPE 2)
(See Fig. 8-5)
1. Remove the main belt (G1) x 1 pc., from the tape motor side.
2. Remove the FF/REW belt (G2) x 1 pc.
Tape
Motor
TAPE 2
Main
Belt
(G1)x1
REW/FF
Clutch Ass'y
REW/FF
Belt
(G2)x1
TAPE 2
Main Belt
(G1)x1
Main
Belt
(F1)x1
TAPE 1
Main Belt
(F1)x1
Tape
Motor
REW/FF
Belt
(F2)x1
TAPE 1
REW/FF
Clutch Ass'y
– 8 –
(E1)x2
ø2x4mm
Tape
Motor
Tape
Motor
Figure 8-3
(E1)x2
ø2x4mm
(E1)x2
ø2x4mm
Motor
Bracket
(E2)x3
Special Screw
Motor
Bracket
Figure 8-4Figure 8-5
CD MECHANISM SECTION
(B1)x2
ø3x8mm
(A1)x4
ø3x8mm
(B1)x3
ø3x8mm
Loading
Tray
(B3)x2
ø2.4x3mm
(B2)x1
(A2)x1
Loading
Motor
T/T Up/Down
Motor
(A3)x2
ø2.4x3mm
Perform steps 1, 2, 3, 13, 14, 15 and 17 of the disassembly
method to remove the CD mechanism.
How to remove the T/T up/down motor
(See Figs. 9-1, 9-2)
1. Remove the screws (A1) x 4 pcs.
2. Remove the belt (A2) x 1 pc.
3. Remove the screws (A3) x 2 pcs., to remove the T/T up/
down motor.
CD-XP125V
Figure 9-1
How to remove the loading motor
(See Figs. 9-1, 9-2)
1. Remove the screws (B1) x 5 pcs.
2. Remove the belt (B2) x 1 pc.
3. Remove the screws (B3) x 2 pcs., to remove the loading
motor.
How to remove the pickup (See Fig. 9-3)
1. Remove the stop washer (C1) x 1 pc., to remove the gear
(C2) x 1 pc.
2. Remove the screws (C3) x 2 pcs., to remove the shaft
(C4) x 1 pc.
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.
CD
Pickup
Mechanism
(C3)x1
ø2.6x6mm
Figure 9-2
Stop Washer
(C1)x1
(C3)x1
ø2.6x6mm
Gear
(C2)x1
Shaft
(C4)x1
Figure 9-3
– 9 –
CD-XP125V
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
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
••
• Tape Speed
••
Test Tape
Tape MTT-111 Variable 3,000 ± 30 Hz Speaker
speed Resistor in Terminal
Adjusting
Point
motor. (Load
TAPE MECHANISM
Specified Value
Tape 1
Specified
Value
Tape 2
Instrument
Connection
resistance:
6 ohms)
TUNER SECTION
fL: Low-range frequency
fH: High-range frequency
••
•
AM IF/RF
••
Signal generator: 400 Hz, 30%, AM modulated
Test Stage Frequency 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): T302 *1
Display
*1. Input: Antenna Output: TP302
*2. Input: Antenna Output: TP301
• FM Mute Level (FM ST MODE)
Signal generator: 1 kHz, 40 kHz dev., FM modulated
Frequency
98.00 MHz 98.00 MHz VR351*1 Input: CNP301
(26 dBµV) Output: Speaker
Display
Adjusting
*1. Adjust so that an output signal appears.
Parts
Setting/
Adjusting
Parts
Connection
Terminal
Instrument
Connection
Instrument
Tape
Motor
Variable Resistor in motor
Figure 10-1
T351
AM IF
VR351
FM MUTE
Level
• FM IF
Notes:
1. Description of the "FM IF Adjustment" is not carried on this
Manual. It is because the IF coil in the FM front end section
has been best adjusted in the factory so that its further
adjustment is not needed at the field. When replacing the
FM front end assembly, no adjustment is needed either.
2. The parts in the FM front end section are prepared in a
complete unit, so you can't obtain each part individually.
MAIN PWB
1
22
R381
20
TP301
IC302
11 12
SO302
TERMINAL
FM ANTENNA
IC301
TP302
R356
R357
T306
AM BAND
COVERAGE fL
Figure 10-2 ADJUSTMENT POINTS
– 10 –
T302
AM TRACKING
fL
CNP301
VIDEO CD SECTION
SET
Video Output Terminal
Video Input Terminal
TV
A-BEX
TEST VIDEO CD
••
• Measurement of oscillation frequency
••
Disc Adjusting
CD Stop TC100V 27.00000 MHz1 of R163V and
••
• Checking of video output signal
••
Point
Model No.
Instrument
Connection
± 160 Hz
Checking of color bar
Disc Adjusting Point
Track 2 Video output terminal Chroma Peak Level
TVD-581
TVD-581A
Specified Value
2
of C183V
Instrument
Connection
100 ± 15 IRE
CD-XP125V
Figure 11-3 Checking of video output signal
VIDEO PWB
X1
R163
1
PCLK2X
TC100
2
C183
GND
IC15
Figure 11-1 ADJUSTMENT POINTS
SET
VIideo Output Terminal
IC14
140 IRE
40 IRE
(1V)
(0.286V)
40 IRE
Color Burst
100 IRE
(0.714V)
-40
Gray
100 100
75
33.5
20
-20
Gray
Figure 11-4
Cyan
Yellow
(59.94Hz/NTSC)
IH
88.5
5
0
-13.5
Magenta
Cyan
Yellow
Green
75
Green
Magenta
Color bar signal
70
waveform
41.5
-25 -25
Blue
Red
Red
Blue
Horizontal
sync signal
75 ohms
Figure 11-2 Measurement of oscillation frequency
GND
Vectorscope
Waveform monitor
or oscilloscope
TV monitor
Figure 11-5
– 11 –
CD-XP125V
Checking of vector scope waveform
Checking SettingDisc Checking
Track 2 VIDEO OUT Set the phase of Phase check
color burst signal ± 10°
(B) to 180°-360°
line.
Item
( Check that the setting is within the illustrated range.)
I
R-Y
R
MG
YL
75%
-Q
G
CY
-I
[NTSC] [PAL]
Checking the black-and-white level
Checking Checking ItemDisc
Track 16 VIDEO OUT Output level
100 ± 10 IRE
100% Luminance
B
Q
B-Y
Figure 12-1
YL
yl
G
g
75%
R
V
cy
CY
MG
b
U
B
mg
100IRE
40IRE
Horizontal Interval
reference signal
40IRE
100% WHITE LEVEL
Figure 12-2
– 12 –
TEST MODE
PLAY + DISC SKIP test04 TIMER ON/OFF TEST MODE
FL DISPLAY:
STOP + DISC SKIP test05 VFD DISPLAY WINDOW TEST MODE
FL DISPLAY: VFD ALL LIGHT
FUNCTION: TEST THE VFD DISPLAY WINDOW
PLAY + OPEN/CLOSE test08 OPEN/CLOSE & 3 DISC CHANGER AGING TEST
CD-XP125V
DISPLAY:
FUNCTION: Enter the TEST MODE 8, MCU control the 3 DISC CHANGER OPEN/CLOSE.
After open finished, tray rotate 1 circle (360 degree). Then close, After close
finished, tray rotate 1 circle (360 degree) again.
Request: Every period include 4 operation. Below is TIMING:
Enter test mode
CHANGER
Find the disc 1 position
open
delay 3S after open finish
rotate 1 circle
close
delay 3S after close finish
rotate 1 circle
– 13 –
CD-XP125V
PLAY + VOLUME DOWN test06 FRONT PANEL KEY TEST
FL DISPLAY:
FUNCTION:
F RONT PANEL KEY TEST MODE,IF ALL KEY HAVE BEEN PRESSED 1 TIME,
THEN
PRESS THE "POWER" KEY, VFD DISPLAY "OK".
PLAY + VOLUME UP test03 VOLUME TEST MODE
FL DISPLAY:
FUNCTION:
1. TEST 3 DISPLAY 1 SECOND. THEN CHANGE TO CD FUNCTION.
2. IN CD FUNCTION (Pickup IN CHECK DISC1 SW TOC_IL No
DISC RECEIVE OPEN/CLOSE KEY OPEN RECEIVE
OPEN/CLOSE KEY CLOSE)
3. Can change to other function [TAPE/TUNER] FUNCTION KEY PROCESS
SAME AS NORMAL PROCESS.
4. In any function within this test mode VOLUME CONTROL HAS
3LEVEL [0/23/MAX] CANCEL VOL UP/DOWN CONTINUE PROCESS
FUNCTION.
PLAY + TUNER test02 TUNER TEST MODE
FL DISPLAY
FUNCTION STORE 10 PRESET TUNER IN THE MEMORY [AM/FM ST]
FM test use the BAND key change from FM ST.
– 14 –
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. As to electrolytic
capacitor, the expression “capacitance/withstand voltage”
is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene type
• Schematic diagram and Wiring Side of P.W.Board for this
model are subject to change for improvement without prior
notice.
CD-XP125V
• The indicated voltage in each section is the one measured
by Digital Multimeter between such a section and the chassis with no signal given.
1. In the tuner section,
indicates AM
indicates FM stereo
2. In the main section, a tape is being played back.
3. In the deck section, a tape is being played back.
4. In the power section, a tape is being played back.
5. In the CD section, the CD is stopped.
• Parts marked with “ 1 ” ( ) are important for
maintaining the safety of the set. Be sure to replace these
parts with specified ones for maintaining the safety and
performance of the set.
REF. NO DESCRIPTION POSITION
SW1 OPEN/CLOSE ON—OFF
SW2 DISC ON—OFF
SW3 UP ON—OFF
SW4 PICKUP IN ON—OFF
SW5 TAPE 1 PLAY ON— OFF
SW6 TAPE 1 FF/REW ON—OFF
SW7 TAPE 2 FF/REW ON—OFF
SW8 TAPE 2 PLAY ON— OFF
SW101 VOLTAGE SELECTOR 110 V—127 V—
220 V— 230-240 V
SW301 SPAN SELECTOR 50 kHz/9 kHz—
100 kHz/10 kHz
SW701 ON/STAND-BY ON—OFF
SW702 CD ON—OFF
SW703 TUNING UP ON—OFF
SW704 PRESET UP ON—OFF
TYPES OF TRANSISTOR AND LED
FRONT
VIEW
REF. NO DESCRIPTION POSITION
FRONT
VIEW
SW705 TUNER (BAND) ON—OFF
SW706
SW707 PRESET DOWN ON—OFF
SW708 EQUALIZER/X-BASS/DEMO ON—OFF
SW709 TAPE ON—OFF
SW710 STOP ON—OFF
SW711 VOLUME UP ON—OFF
SW712 DISC SKIP ON—OFF
SW713 OPEN/CLOSE ON—OFF
SW714 PLAY/REPEAT ON—OFF
SW715 VOLUME DOWN ON—OFF
SW716 P.B.C ON—OFF
SW717 O.S.D ON—OFF
SW718 DIGEST ON—OFF
SW801 REC./P.B. ON—OFF
TUNING DOWN
ON—OFF
FRONT
VIEW
E C B
(S) (G) (D)
(1) (2) (3)
2SC1740 SR
2SD1858 R2
KRA102 M
KRC102 M
KRC107 M
KRC104 M
KSA1015 GR
HSB562 C
HSC1609 GR
KSC1815 GR
KSC3203 Y
KSA1271 Y
SC1674 C
B C E
2SD2012 Y SD3210W
– 15 –
CD-XP125V
CNS933B
7
6
5
4
3
2
1
CNS933B
TO
POWER PWB
LOAD+
MECHA_UP SW
DISC1_SW
OP/CL SW
ROTATE
LOAD–
CD_STB
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
7980 78
XVDD
DVDD
DVR
LO
DVSL
TEST1
TEST2
TEST3
BUS0
BUS1
BUS2
BUS3
VDD
VSS
BUCK
/CCE
TEST4
TESTO
1
7776 75747372
XI
XO
VDD
XVSS
/HSO
UHSO
EMPH
LRCK
Q406
Q409
I02
VSS
I00
I01
DATA
SFSY
VSS
SBSY
Q407
VDD
50
49
32
31
SPCY
FLGD
VREF
TRO
LPFO
LPFN
SPDA
FLGC
COFS
FLGB
MONIT
Q408
Q410
D403
717069 68 676665 64 636261 60 595857 56 55545352 51
PXO
VSS
81
82
99
100
PXI
BCK
VSS
TESI01
DVSR
RO
/TSMOD
/RST
AOUT
DOUT
98765432
I03
TESIN
/DACT
/CKSE
/DMOUT
IC402
TC9462F
SERVO DSP
MBOV
IFP
SBOK
CLCK
VDD
Q405
FLGA
VDD
SEL
2VREF
TESIOO
P2VREF
Q403
DMO
HSSW
D402
FVO
FMO
FOO
TEZI
TSIN
SBAD
RFRP
RFZI
RFCT
AVDD
SLCO
AVSS
VCOF
VCOREV
PVREV
ZDET
PDO
293028272625242322212019181716151413121110
Q402
TEBC
RFGC
TEI
FEI
RFI
TMAXS
TMAX
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
DGND
/RST
BUS0
BUS1
BUS2
BUS3
CNP931B
PICK_IN
BUCK
/CCE
9 10111282134657
POWER PWB
LRCK
TO
BCK
DATA
CNS931B
Figure 16 BLOCK DIAGRAM (1/6)
– 16 –
OP/CL_SW
DISC1_SW
MECHA_UP SW
ROTATE+
CD-XP125V
SW1
OPEN/
CLOSE
SW2
DISC
SW3
UP
+
–
M+
M3
T/T UP/DOWN
MOTOR
M
13
14
15
16
17
18
19
20
21
22
23
24
IC401
TA2109F
SERVO PRE
AMP.
Q461
GND
OPO
IC404
PO1–
MM1469XH
FOCUS/TRACKING/
12
11
10
9
8
7
6
5
4
3
2
1
PO1+
SPIN/SLED DRIVER
VO2–
VO3–
Q401
VO2+
VO3+
19 20 21 2223 24 252627 2818171615
VIN2
VIN3
VG2
VG3
GND
VCC
MUTE
VCC
TRB
REG O
BIAS
VG4
+
–
VG1
VIN4
VIN1
VO4+
M
1234567891011121314
VO1+
VO4–
VO1–
GND
PU_IN
M1
CD LOADING
MOTOR
CD_6.2V
TR–
TR+
FO+
FO–
GND
PD
VR
LD
C
F
B
A
E
1/2V
+5V
PICKUP UNIT
+B7
CNS932
1
2
3
SP+
SP–
SL+
SL–
PU-IN
CNP932
+
–
+
–
M
M
NM802
SPINDLE MOTOR
NM801
SLED MOTOR
SW4
PICKUP IN
FO+
TR+
TR–
FO–
ACTUATOR
1/2VCC
+
–
C
+
–
F
+
–
B
+
–
A
+
–
E
GND
MON
LD
VCC
GH6C605B3A1
Figure 17 BLOCK DIAGRAM (2/6)
– 17 –
CD-XP125V
IC10
IX0041SJ
ROM 256Kx16
VPP
VCC
PGM/A18
A17
A14
A13
A8
A9
A11
OE
A10
CE
D7
D6
D5
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
1
2
A16
3
A15
4
A12
5
A7
6
A6
7
A5
8
A4
9
A3
10
A2
11
A1
12
A0
13
D0
14
D1
D2D3D4
15
VSS
16
Q11
Q12
VDAC
MCLK
TSD
TBCK
TWS
7980 78 77 76757473 72717069 68 67666564 63 626160 59 58575655 54 535251
LA9
LA8
LA7
LA6
LA5
LA4
LA3
LA2
LA1
VCC
81
LA12
82
83
LA13
84
LA14
85
LA15
86
LA16
87
LA17
88
AUDIOCLK
89
AUDATA
90
BCLK
91
LR
92
93
RSD
94
RBCLK
95
RWS
96
TDMCLK
97
TDMDR
98
TDMFS
DCAS
99
VSS
100
VSS
LA11
LA10
DRAS
DWE
DA0
DA1
DA2
DA3
VCC3
1920 181716 15 141312 11 10
A2
A3
VCC
VSS
A4A5A6A7A8
DA4
A0
A1
NC
WE
RAS
OE
LA0
LSCE0
IC15
ES3880F
VIDEO CD DECODER
DA5
DA6
DA7
DA8
DBUS0
DBUS1
98765432
D4
D5
D6
D7
NC
NC
UCAS
NC
LCAS
D8D9D10
LSCE1
LROMCE
DBUS2
DBUS3
VCC
VSS
D11
LOE
DBUS4
D2
D3
D12
D13
LD7
LWR
DBUS5
DBUS6
D1
D14
3940383736353433323130292827262524232221
LD6
LD5
DBUS7
DBUS8
1
D0
VCC
VSS
D15
LD4
LD3
DBUS9
DBUS10
LD2
LD1
LD0
AUX1/DSADATA
DBUS11
DBUS12
DBUS13
VSS
AUX5
VCC3
AUX4
DSC_STB
AUX6/SCK
AUX7/STB
AUX3/VD_DI
AUX2/VD_DO
AUX0/DSAACK
PCLKQSCN
PCLK2XSCN
DCLK
HSYNC
VSYNC
YUV7DRAS1/DOE
YUV6
YUV5
YUV4
YUV3
YUV2
YUV1
YUV0
VCC3
DBUS14
DBUS15
VSS
RESET
293028272625242322212019181716151413121110987654321
50
49
VD_DI
48
VD_DO
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
IC16
IX0025SJ
D-RAM 256Kx16
Figure 18 BLOCK DIAGRAM (3/6)
– 18 –
CNP801
1
VDAC
IC11
NJM4565M
BUFFER AMP.
CD-XP125V
CNS802A
VDAC
1
TO
2
7
– +
6
5
1
+ –
2
3
8
4
+5V
L-CH
R-CH
+B11
+B10
+12V
VD_DI
VD_DO
3
1
2
3
3
2
1
CNP804A
1
BUSY
2
VD_DI
3
VD_DO
ACK
4
STB
5
6
CLID_OUT
7
VIDEO OUT
SECTION
CNS802B
TO
MAIN
SECTION
CNS802C
TO
POWER
SECTION
FROM DISPLAY
7980 78 77 76757473 72 717069 68 67666564 63 62616059 58 575655 54 535251
NC
XIN
VSS
VSS
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
PCLK2X
DSC_D7
HSYNC
DSC_D6
VSYNC
DSC_D5
YUV7
YUV6
YUV5
YUV4
VCC
VSS
YUV3
DSC_D4
YUV2
DSC_D3
YUV1
DSC_D2
YUV0
DSC_D1
VSS
1
VSS
PCLK
NC
VCC
NC
VSS
NC
VCC
DSC_CLK
VCC
XOUT
VIDEO CD ENCODER
AUX0
AUX1
DSC_STB
DSC_D0
AUX4
AUX5
ES3883F
AUX2 AUX3
RST
VCC
AUX6
IC14
NC
AUX7
ACAP
VDAC
VCC
MCLK
VSSAV
VSSAV
TWS
AUX8
201918171615141312111098765432
YDAC
VCCA
AUX9
TSD
VCCA
TBCK
CDAC
VSSAV
RSTOUT
RWS
RSET
COMP
VSSAV
BUSY/AUX15
S_EN/ AUX14
LA18/ AUX13
NC/ AUX12
NC/ AUX11
NC/ AUX10
VSS
VSS
SQCK
VREF
VREFM
MIC2
MIC1
AOL+
AOL–
AOR–
AOR+
VCCA
VREFP
VSSA
RBCK
NC
SQSO
29302827262524232221
VSSA
VCM
RSD
VCC
VSS
NC
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
CNP801
AUX0
EAUX0
EAUX01
EAUX02
EAUX03
EAUX08
EAUX04
910111287654321
/RST
BUS0
FROM CD SERVO SECTION
BUS2
BUS1
BUS3
/CCE
BUCK
LRCK
PICK_IN
BCK
DATA
Figure 19 BLOCK DIAGRAM (4/6)
– 19 –
CD-XP125V
V
3
0
A
A
M
T
7
SO301
FM ANTENNA
TERMINAL
AM LOOP
ANTENNA
CNP301
B.P.F
BF301
AM TRACKING
T302
TA7358AP
1
FM FRONT END
4
2
3
FM RF
L302
T306
IC301
5
COVERAGE
8
7
FM
OSC
L303
OSC BUFF
Q302
AM BAND
FM IF
T302
CF303
DZ5.1BSJ
+B4
6
9
FM OSC
VT
1
23
AM OSC IN
X352
4.5 MHz
CF302
2
AM MIX
IC303
LA1832S
21
AM RF IN
T351
AM IF
CF352
AM IF
7
STEREO
CF351
4
985
GND
VCC
FM/AM
MPXIN
OUT
18
IC303
LA1832S
FM IF DET./
FM MPX./AM IF
FM
DET
16
17
VCO
X351
456 kHz
13
MO/ST
FM/AM
12
L
14
R
15
FRO
SEC
CNS
TAPE 2
PLAYBACK
HEAD
TAPE 1
RECORD/
PLAYBACK HEAD
VIDEO OUT
T1 FF/REW
T2 FF/REW
CD SECTION
L-CH
R-CH
L-CH
R-CH
AC BIAS
ERASE
HEAD
SO103
SW5
T1 PLAY
SW6
SW7
SW8
T2 PLAY
FROM
CNS103
REC
P.B.
CNP802A
M2
TAPE
MOTOR
M
SWITCHING
SW801
B, C, D,
1
2
3
CNP103
F, G
BIAS
OSC
FROM
DECODE SECTION
CNS802A
SP DET
+B3
+B3
+B3
+B3
1
2
3
PLAYBACK AND RECORD
L(T1)
R(T1)
L(T2)
R(T2)
L NF
R NF
IC801
AN7345K
/PLAYBACK AMP.
1
24
2
23
3
22
P.B
6
L REC
REC
9
16
R REC
REF
14
Q801
L801
12
T1/T2
19
15
20
OSC
LC72131
PLL(TUNER)
7
FM
SWITCHING
+B4
13
L
4
PB
R
21
Q360
FM
TUNER
IC302
TAPE
CD
1615
FM/AM
L
R
L
R
L
R
11
9
10
15
11
14
12
13
22
1
5
20
7
18
8
17
10
SW801
H
L REC
R
L NF
R NF
ALC
+B4
SW801
A, E
JK901
MIC
5
NJM4558D
+B4
8
IC902
BUFFER
AMP.
7
MIC VOLUME
Figure 20 BLOCK DIAGRAM (5/6)
– 20 –
DO
CL
DI
CE
4
5
3
6
17
MO/ST
21
10
+B4
23
IC601
LC75341M
AUDIO PROCESSOR
VR901
8
7
3
17
18
5
1
DI
CE
2
CL
24
21
R
L
4
R
L
1 7
IC901
NJM4558D
BUFFER
AMP.
2 6
8
Q203
Q204
SYSTEM
MUTE
+B4
+B11
+B10
MC78
VOLT
REGUL
5 V
IC9
Q931
Q932
11.7
CD-XP125V
03
04
TEM
TE
+B4
FROM CD
SECTION
CNS702
CNP702
1
2
3
4
5
6
2
1
~
3
SW701
L
R
IC201
LM1876TF
POWER AMP.
FL701
FL DISPLAY
31
10
29
15
~
26
30
~
37
CD +B
~
18
5
8
13
VccB
15
+B1
VccA
2
4
Vee
11
7
–B1
30
5251
IC701
SC16312
SYSTEM
MICROCOMPUTER
DIN
STB
VIDEO +B
CLK
68
9
11
R-OUT
L-OUT
T3.15A L 250V
F101
14
+B2
VDD
+B4
46
VDD
3332
VEE
VDD
KEY3
KEY1
~
+B2
38
13
~
10
KEY
SW702~SW715
JK101
HEADPHONES
27
-B2
CNP105
1
2
3
FROM CD
SECTION
4
CNS105
5
6
SP DET
9
SO102
SPEAKER
TERMINAL
+B11
IC931
MC7805CT
VOLTAGE
REGULATOR
Q931,
Q932
+B10
11.7 V
5 V
Q935,
Q936
VF2
VF1
+B7
+B2
+B3
+B4
+B5
-B2
5.6 V
M10 V
VOLTAGE
REGULATOR
A12 V
-30 V
6.2 V
D108~D111
IC101
MC7805CT
VOLTAGE
REGULATOR
Q103
Q104
VOLTAGE REGULATOR
Q109,Q110
VOLTAGE REGULATOR
Q935,Q936
D112~D115
VOLTAGE
REGULATOR
D934~D937
Q933,Q934
Q101
Figure 21 BLOCK DIAGRAM (6/6)
– 21 –
F102
T3.15A L 250V
F931
T2A L 250V
T101
POWER TRANSFORMER
230-240 V
220 V
127 V
110 V
SW101
VOLTAGE
SELECTOR
AC POWER
SUPPLY CORD
AC 110/127/220/
230-240 V,
SO101
AC INPUT
50/60 Hz
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