Aiwa CX-LZP5 User manual

1
Ver 1.2 2004. 11
SERVICE MANUAL
US Model
Canadian Model
AEP Model
UK Model
E Model
CX-LZP5
Amplifier section
US, CND model:
Continuous RMS power output (reference):
20 + 20 W
(6 ohms at 1 kHz, 10%
THD)
Total harmonic distortion less than 0.9% (6 ohms at
1 kHz, 10 W)
AEP, UK model:
DIN power output (rated):
16 + 16 W
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
20 + 20 W
(6 ohms at 1 kHz, 10%
THD)
Music power output (reference):
40 + 40 watts (6 ohms at
1 kHz, 10% THD)
SPECIFICATIONS
E51, MY, SP,TW model:
The following measured at 110 – 120, 220 – 240 V AC,
50/60 Hz
DIN power output (rated):
16 + 16 W
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
20 + 20 W
(6 ohms at 1 kHz, 10%
THD)
Inputs
MD (RCA pin jacks): Sensitivity 500 mV,
impedance 47 kilohms
Outputs
PHONES (stereo mini jack):
Accepts headphones with
an impedance of 8 ohms or
more
SPEAKERS: Accepts impedance of
6 ohms
USB hub ports Maximum current
consumption: 100 mA per
port
Sony Corporation
Personal Audio Company
Published by Sony Engineering Corporation
9-877-863-03
2004K04-1
© 2004. 11
– Continued on next page –
COMPACT DISC RECEIVER
•CX-LZP5 is compact disc receiver
in AWP-ZP5.
AUDIO POWER SPECIFICATIONS
(For the U.S. model)
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION:
With 6-ohm loads, both channels driven, from
120 – 10,000 Hz: rated 20 watts per channel
minimum RMS power, with no more than 10%
total harmonic distortion from 250 milliwatts to
rated output.
Model Name Using Similar Mechanism CX-LZP3
CD Mechanism Type CDM80BV-F4BD81
Base Unit Name BU-F4BD81B
Optical Pick-up Name KSM-215CFP

2
CX-LZP5
CD player section
System Compact disc and digital
audio system
Laser Semiconductor laser
(λ=780 nm)
Emission duration:
continuous
Frequency response 2 Hz – 20 kHz
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
US, CND model: 87.5 – 108.0 MHz
(100-kHz step)
Other models: 87.5 – 108.0 MHz
(50-kHz step)
Antenna FM lead antenna
Antenna terminals 75 ohms unbalanced
Intermediate frequency 10.7 MHz
AM tuner section
Tuning range
US, CND model: 530 – 1,710 kHz
(with the tuning interval
set at 10 kHz)
531 – 1,710 kHz
(with the tuning interval
set at 9 kHz)
AEP, UK model: 531 – 1,602 kHz
(with the tuning interval
set at 9 kHz)
E51, MY, SP, TW model: 530 – 1,710 kHz
(with the tuning interval
set at 10 kHz)
531 – 1,602 kHz
(with the tuning interval
set at 9 kHz)
Antenna AM loop antenna, external
antenna terminal
Intermediate frequency 450 kHz
General
Power requirements
US, CND model: 120 V AC, 60 Hz
AEP, UK model: 230 V AC, 50/60 Hz
TW model: 120 V AC, 50/60 Hz
E51, MY, SP model: 110 – 120, 220 – 240 V
AC, 50/60 Hz
Adjustable with voltage
selector
Power consumption
AEP, UK model: 40 W
0.3 W (in Power Saving
mode)
US, CND model: 40 W
E51, MY, SP, TW model:45 W
Dimensions (w/h/d) incl. projecting parts and controls
Amplifier/Tuner/CD section:
Approx. 108 ×224.8 ×
327.1 mm
Mass
Amplifier/Tuner/CD section
Approx. 4.4 kg
Design and specifications are subject to change
without notice.
Notes on Chip Component Replacement
•Never reuse a disconnected chip component.
•Notice that the minus side of a tantalum capacitor may be
damaged by heat.
Flexible Circuit Board Repairing
•Keep the temperature of soldering iron around 270°C during
repairing.
•Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
•Be careful not to apply force on the conductor when soldering
or unsoldering.
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
•Unleaded solder melts at a temperature about 40 °C higher than
ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering ironsusing atemperature regulatorshould besetto about
350 °C.
Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!
•Strong viscosity
Unleaded solder is more viscou-s (sticky, less prone to flow) than
ordinary solder so use caution not to let solder bridges occur such
as on IC pins, etc.
•Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may also
be added to ordinary solder.
•Abbreviation
CND : Canadian model
E51 : Chilean and Peruvian model
MY : Malaysia model
SP : Sinpapore model
TW : Taiwan model
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINE
WITH MARK 0ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0SUR LES
DIAGRAMMESSCHÉMATIQUESET LALISTE DESPIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
Ver 1.2

3
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
CX-LZP5
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
breakdown because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
Laser component in this product is capable
of emitting radiation exceeding the limit for
Class 1.
This appliance is
classified as a CLASS 1
LASER product. This
marking is located on the
rear exterior.
PLAYABLE DISCS
You can play back the following discs on this system. Other discs
cannot be played back.
List of playable discs
Format of discs Disc logo
Audio CDs
CD-R/CD-RW
(audio data/MP3 files)

4
TABLE OF CONTENTS
CX-LZP5
1. SERVICE POSITIONS
1-1. CDM Service Position ........................................................ 5
2. GENERAL
Main Unit ................................................................................ 6
Remote Control ....................................................................... 7
3. DISASSEMBLY
3-1. Case (Top) ........................................................................... 9
3-2. Front Panel Section ............................................................. 9
3-3. Rear Panel Section, PT SW Board (E51, MY, SP model) .. 10
3-4. Main Board ....................................................................... 10
3-5. Mechanism Deck............................................................... 11
3-6. Power Board ...................................................................... 11
3-7. USB (A) Board, USB (B) Board....................................... 12
3-8. Chassis (Top) ..................................................................... 12
3-9. Lever (Loading R/L) ......................................................... 13
3-10. Disc Stop Lever, Disc Sensor Lever.................................. 14
3-11. Driver Board...................................................................... 14
3-12. CD Board .......................................................................... 15
3-13. Optical Pick-up ................................................................. 15
3-14. Base Unit ........................................................................... 16
3-15. Lever (BU Lock) ............................................................... 16
3-16. Close Lever ....................................................................... 17
3-17. DIR Lever, Gear (IDL-B) .................................................. 17
3-18. Gear (IDL-C)..................................................................... 18
4.TEST MODE ...................................................................... 19
5. ELECTRICAL ADJUSTMENT.................................... 20
6. DIAGRAMS
6-1. IC Pin Description............................................................. 21
6-2. Block Diagram –CD Section–........................................... 26
6-3. Block Diagram –Main Section–........................................ 27
6-4. Block Diagram –USB Section– ........................................ 28
6-5. Note for Printed Wiring Boards and
Schematic Diagrams .......................................................... 29
6-6. Circuit Boards Location .................................................... 29
6-7. Waveforms......................................................................... 29
6-8. Printed Wiring Board –CD Section– .................................30
6-9. Schematic Diagram –CD Section–.................................... 31
6-10. Schematic Diagram –Main Section (1/2)– ........................ 32
6-11. Schematic Diagram –Main Section (2/2)– ........................ 33
6-12. Printed Wiring Boards –Main Section– ............................ 34
6-13. Printed Wiring Board –Driver Section– ............................ 35
6-14. Schematic Diagram –Driver Section–............................... 35
6-15. Printed Wiring Board –USB Section–............................... 36
6-16. Schematic Diagram –USB Section– ................................. 37
6-17. Printed Wiring Board –Front Section–.............................. 38
6-18. Schematic Diagram –Front Section– ................................ 39
6-19. Printed Wiring Board –Power Section– ............................ 40
6-20. Schematic Diagram –Power Section– ............................... 41
6-21. IC Block Diagrams............................................................ 42
7. EXPLODEDVIEWS
7-1. Rear Panel Section ............................................................ 44
7-2. Front Panel Section ........................................................... 45
7-3. Main Board Section .......................................................... 46
7-4. CD Mechanism Deck (1) Section ..................................... 47
7-5. CD Mechanism Deck (2) Section ..................................... 48
7-6. CD Mechanism Deck (3) Section ..................................... 49
7-7. Base Unit Section .............................................................. 50
8. ELECTRICAL PARTS LIST......................................... 51
Ver 1.2

5
CX-LZP5
SECTION 1
SERVICE POSITIONS
1-1. CDM SERVICE POSITION
•The CDM is specified in vertical position and this is the standard position.
Check signals such as RF waveform in this position.
•Extension of this flexible cable increases workability.
1mm pitch/27-pin/L300
Jig No.J-2501-214-A
J-2501-214-
A
Ver 1.1

6
CX-LZP5
SECTION 2
GENERAL This section is extracted
from instruction manual.
38
GB
Main unit
ALBUM + qs (11, 12, 27)
ALBUM – qh (11, 12, 27)
Disc slot 8(10)
Display window 2
FUNCTION qj (8, 10, 12, 13, 15,
23, 26, 27, 30)
i-Bass 0(17, 33)
MD1) 6(30)
PC2) 3(23, 26, 27)
PHONES jack qd
Remote sensor 5
TUNER/BAND 41)6(13, 15)
TUNING +/– 9(13, 15)
USB hub ports3) qf (28, 29)
USB STATUS lamp3) qg (28)
VOLUME control qa (26, 27)
?/1 (power) 1(8, 14, 23, 33)
PC 3) (play) 3(27)
CD N(play) 31)4(11)
Z(eject) 7(8, 10)
.m (go back/rewind) 9
(11, 14, 27)
M> (fast forward/go
forward) 9(8, 11, 14, 15, 27)
X(pause) qk (11)
x(stop) ql (11, 14)
1) AWP-ZP1 only
2) AWP-ZP3 only
3) AWP-ZP5 only
List of button locations and reference pages
How to use this page
Use this page to find the location of buttons and other
parts of the system that are mentioned in the text.
Ill
us
t
ra
ti
on num
b
er
r
TUNER/BAND 4
1)
6(13, 15)
RR
Name of button/part Reference page
ALPHABETICAL ORDER
A – O P – Z
BUTTON DESCRIPTIONS
2
8
9
qa
0
qs
qd
3 4 5 76
qk
ql
qg
qj
1
qh
qf

7
CX-LZP5
39
GB
Additional Information
Remote control
ALBUM +/– 8(11, 12, 27)
CD qf (10, 12, 14, 15)
CLEAR qh (13)
CLOCK/TIMER SELECT ql
(19)
CLOCK/TIMER SET 2(9, 18)
DISPLAY qk (16, 20, 27)
ENTER 8(9, 12, 14, 18)
EQ 8(17)
FM MODE 6(16)
FUNCTION w; (10, 12, 13, 15,
23, 26, 27, 30)
i-Bass 8(17)
Number buttons qj (11, 27)
PC* qg (23, 26, 27)
PC MIXING* 4(17)
PLAY MODE 7(11, 12, 27)
REPEAT 6(12, 27)
SLEEP 3(18)
TUNER BAND qs (13, 15)
TUNER MEMORY 5(14)
TUNING MODE 7(13, 15)
TUNING +/– 8(13, 15)
VOLUME +/– 0(18, 26, 27)
?/1 (power) 1(8, 14, 18, 23,
33)
./> (go back/go forward)
8(9, 11, 14, 18, 27)
m/M (rewind/fast forward)
8(11, 27)
N(play) 9(11, 27)
x(stop) qa (11, 14, 27)
X(pause) qd (11, 27)
*This button is not available for
AWP-ZP1.
ALPHABETICAL ORDER
A – H I – Z
BUTTON DESCRIPTIONS
0
9
2
3
8
qs
1
ql
qk
qh
qj
w;
4
5
6
7
qd
qf
qg
qa
0
9
2
7
8
w;
1
ql
qk
qh
qj
3
6
5
6
7
qd
qs
qf
qa
AWP-ZP5/ZP3 AWP-ZP1

8
CX-LZP5
SECTION 3
DISASSEMBLY
Note : Disassemble the unit in the order as shown below.
3-1. CASE (TOP)
(Page 9)
SET
3-4. MAIN BOARD
(Page 10)
3-6. POWER BOARD
(Page 11)
3-5. MECHANISM DECK
(Page 11)
3-8. CHASSIS (TOP)
(Page 12)
3-11. DRIVER BOARD
(Page 14)
3-14. BASE UNIT
(Page 16)
3-10. DISC STOP LEVER,
DISC SENSOR LEVER
(Page 14)
3-12. CD BOARD
(Page 15)
3-2. FRONT PANEL SECTION
(Page 9)
3-3. REAR PANEL SECTION,
PT SW BOARD (E51 model)
(Page 10)
3-13. OPTICAL PICK-UP
(Page 15)
3-15. LEVER (BU LOCK)
(Page 16)
3-16. CLOSE LEVER
(Page 17)
3-17. DIR LEVER,
GEAR (IDL-B)
(Page 17)
3-18. GEAR (IDL-C)
(Page 18)
3-9. LEVER (LOADING R/L)
(Page 13)
3-7. USB (A) BOARD,
USB (B) BOARD
(Page 12)

9
CX-LZP5
Note : Follow the disassembly procedure in the numerical order given.
3-1. CASE (TOP)
1 three screws
(case 3 TP2 )
2 three screws
(case 3 TP2 )
4 case (top)
3 two screws
(+BVTP 3 x 8
)
3-2. FRONT PANEL SECTION
4 screw
(+BVTP 3 x 8)
1 screw
(+KTP 3 x 8)
6 CN602
claw
claw
claw
7 CN700
8 front panel section
5
2
screw
(+KTP 3 x 8)
3 screw
(+KTP 3 x 8)

10
CX-LZP5
3-3. REAR PANEL SECTION, PT SW BOARD (E51, MY, SP model)
3-4. MAIN BOARD
3 screw
(+BVTP 3
x 8)
qd screw
(+BVTP 3
x 8
)
qf sheet sheld
qg PT SW board
(E51, MY, SP model)
5 screw
(+BVTP 3
x 8)
7 screw
(+BVTP 3
x 8)
6 two screws
(+BVTP 3
x 8)
9 two screws
(+BVTP 3
x 8)
8 two screws
(+BVTP 3
x 8)
0 rear panel section
4 screw
(+BVTP 3
x 8)
1 CN451
2 CN601
qa CN104
qs CN103
7 two screws
(+BVTP 3
x 8)
9 two screws
(+BVTP 3
x 8)
0
4
three screws
(+BVTP 3
x 8)
5 two screws
(+BVTP 3
x 8)
8 two screws
(+BVTP 3
x 8)
6 two screws
(+BVTP 3
x 8)
3 screw
(+BVTP 3
x 8)
1 CN701
qa CN706
qs CN701
qd MAIN board
2 CN101
Ver 1.2

11
CX-LZP5
3-5. MECHANISM DECK
3-6. POWER BOARD
1 screw
(+BVTP 3 x 8)
2 screw
(+BVTP 3 x 8)
3 screw
(+BVTP 3 x 8)
4 screw
(+BVTP 3 x 8)
5
6
two screws
(+BVTP 3 x 10)
7 two screws
(+BVTP 3 x 10)
8 mechanism dec
k
1 screw
(+BVTP 3
x 8)
2 two screws
(+BVTP 3
x 8)
5 two screws
(+BV 4
x 8)
6 two screws
(+BV 4
x 8)
7 POWER board
3 heat sink ass
y
4 CN102

12
CX-LZP5
3-7. USB (A) BOARD, USB (B) BOARD
3-8. CHASSIS (TOP)
1 screw
(+BVTP 2.6
× 8)
2 lever (CL UP2
)
4 three screws
(+BVTP 2.6
× 8)
3 two screws
(+P 2
× 10)
5 chassis (top)
2 two screws
(+BVTP 3 x 8)
9 screw
(+BVTP 3 x 10)
8 two screws
(+BV3 (3-CR) )
qa three screws
(+BV3 (3-CR) )
qs USB (A) board
0 USB (B) board
3 two screws
(+BVTP 3 x 8)
5 chassis section
4
1
CN102
6 CN801
7 CN802
chassis (main
)

13
CX-LZP5
3-9. LEVER (LOADING R/L)
lever (loading-R)
Align the horizontal position.
lever (loading-L)
Install the both levers so that they move symmetrically.
spr-T (loading-L) spr-T (loading-R)
1
1
PRECAUTION DURING LEVER (LOADING R / L) INSTALLATION
3 lever (loading-L
)
2 two hooks
4 two hooks
5 lever (loading-R)

14
CX-LZP5
3-10. DISC STOP LEVER, DISC SENSOR LEVER
3-11. DRIVER BOARD
chassis (top)
hole
Install the disc stop lever so that the both holes
are aligned.
hole
disc stop lever
PRECAUTION DURING DISC STOP LEVER INSTALLATION
1 gear (cap)
2 gear (IDL-L)
3 two claws
5 two hooks
4 disc sensor lever
6 disc stop lever
2 two screws
(+BVTP 2.6
× 8)
3 Remove soldering
from the two points.
4 motor (pulley) assy
5 DRIVER boar
d
1 belt (MOT)

15
CX-LZP5
3-13. OPTICAL PICK-UP
3-12. CD BOARD
1 CN101
2 Remove the two solderings.
4 CD board
3 Remove the two solderings.
5 two insulator
s
7 optical pick-up
6 two insulators
1 tension spring (F-1)
2 tension spring (F-2)
3 two floating screws
(+PTPWHM 2.6)
4 two floating screws
(+PTPWHM 2.6)

16
CX-LZP5
3-14. BASE UNIT
1 screw
(+BVTP 2.6
× 8)
2 lever (CL UP2)
3 holder down spring
4 floating screw
(+PTPWHM 2.6)
5 floating screw
(+PTPWHM 2.6)
6 base unit
2
1 gear (cap)
2 gear (BU lock)
3 three hooks
4 lever (BU lock)
3-15. LEVER (BU LOCK)

17
CX-LZP5
3-17. DIR LEVER, GEAR (IDL-B)
3-16. CLOSE LEVER
1 washer (3-1-0.4)
2 close lever sprin
g
3 claw
4 shaft disc stop
5 close lever
1 DIR spring-E
6 Loosen the screw.
7 Hold the release lever
and change the direction.
2 capstan retaining ring
3 gear pulley
4 gear (cap)
5 gear (IDL-A)
8 stopper
0 gear (IDL-B)
9 DIR lever

18
CX-LZP5
3-18. GEAR (IDL-C)
3 gear (IDL-D)
2 two claws
1 gear (IDL-F)
7 gear (IDL-C)
6 claw
5 gear loading lever
4 three hooks

19
CX-LZP5
SECTION 4
TEST MODE
[Cold Reset]
Cold Reset clears all data including the preset data stored in the
RAM to initialize the set. Perform this mode when returning the set
to the customer.
Procedure:
1. Press the @/1 button to turn the set on.
2. Press and hold down the @/1 button for more than 2 seconds
while depressing the [i-Bass] button.
3. The fluorescent indicator tube’s display breaks for a moment
and the set is reset.
[Common Test Mode]
Procedure:
1. Press the @/1 button to turn the set on.
2. Press and hold down the [ALBUM--] button for more than 2
seconds while depressing the xbutton.
3. Turn the [VOLUME] control clockwise to display “VOLUME
MAX” on the fluorescent indicator tube.
4. Turn the [VOLUME] control counterclockwise to display
“VOLUME MIN” on the indicator tube.
[Fluorescent Indicator Tube Check and Version
Display]
This is intended to test all the segments and display the version.
Procedure:
1. Press the @/1 button to turn the set on.
2. Press and hold down the [FUNCTION] button for more than 2
seconds while depressing the [ALBUM--] button.
3. The test mode is entered to have all the segments of the
fluorescent indicator tube illuminated.
4. Press the [i-BASS] button.
5. The version of the indicator tube is displayed.
Canceling procedure:
Press and hold down the [FUNCTION] button for more than 2
seconds while depressing the [ALBUM--] button.
[CD Ship Mode]
This mode is intended to move the optical pickup to the secure
position so that it can withstand shocks. Perform this mode when
returning the set to the customer.
1. Press the @/1 button to turn the set on.
2. Set FUNCTION to CD.
3. Press and hold down the [+ ] button for more than 2
seconds while depressing the Zbutton.
4. “LOCK” is displayed on the fluorescent indicator tube, the CD
Shop mode is set, and the power is turned off.
[CD Shop & Memory Clear Mode]
This is a combination of CD Shop mode and Cold Reset.
Procedure:
1. Press the @/1 button to turn the set on.
2. Set FUNCTION to CD.
3. Press and hold down the [FUNCTION] button for more than 2
seconds while depressing the Zbutton.
4. “LOCK” is displayed on the fluorescent indicator tube and the
power is turned off.
[Disc Slot Lock]
Disc Slot Lock is an antitheft function to protect demo discs under
demonstration in the shop.
Procedure:
1. Press the @/1 button to turn the set on.
2. Set FUNCTION to CD.
3. Press and hold down the Zbutton for more than 5 seconds
while depressing the xbutton.
4. “LOCK” is displayed on the fluorescent indicator tube and the
disc slot is locked.
Canceling procedure:
5. Press and hold down the Zbutton for more than 5 seconds
again while depressing the xbutton.
6. “UNLOCK” is displayed on the fluorescent indicator tube and
the disc slot is unlocked.
Note: While “LOCK” is displayed on the fluorescent indicator tube, the
disc lock will not be unlocked even by pressing the @/1 button.
[CD Test Mode]
This mode can be used to move the CD sled motor freely.
Procedure:
1. Press the @/1 button to turn the set on.
2. Set FUNCTION to CD.
3. Press and hold down the Xbutton for more than 2 seconds
while depressing the [CD ] button. “CD TEST” is displayed
on the fluorescent indicator tube and the test mode is entered.
4. With the CD stopped, press the [+ ] button to move
the optical pickup to an outside track. Press the [ --]
button to move the optical pickup to an inside track.
5. With the CD being played, the tracking servo is toggled between
on and off each time the [CD ] button is pressed.
[CD Repeat 5 Times Limit Removal Mode]
1. Press the @/1 button to turn the set on.
2. Press and hold down the [ALBAM+] button for more than 5
seconds while depressing the xbutton.
3. “LIMIT OFF” is displayed on the fluorescent indicator tube
and the repeat 5 times limit is removed.
[AM Channel Step 9 kHz/10kHz Selection Mode]
Either 9k kHz or 10 kHz step can be selected for the AM channel
step.
Procedure:
1. Set the FUNCTION to AM.
2. While depressing the [+ ] button, press the @/1 button.
3. The channel step is changed over.
M>
M>
N
M>
.m
N

20
CX-LXP5
CD SECTION
CD section adjustments are done automatically in this set.
In case of operation check, confirm that focus bias.
FOCUS BIAS CHECK
1. Connect the oscilloscope between IC101 pin ra and pin wg (or
TP124 (RFACO) and TP177 (VC)).
2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01)
3. Press the CD Nbutton.
4. Confirm that the oscilloscope waveform is as shown in the
figure below. (eye pattern)
A good eye pattern means that the diamond shape ( ) in the
center of the waveform can be clearly distinguished.
• RF signal reference waveform (eye pattern)
Test Point:
RF level :
0.8
± 0.2 Vp-
p
VOLT/DIV : 50 mV (10 : 1 probe in use)
TIME/DIV : 500 nS
When observing the eye pattern, set the oscilloscope for AC range
and raise vertical sensitivity.
SECTION 5
ELECTRICAL ADJUSTMENTS
TP177
(VC)
IC101
TP124
(RFACO)
– CD BOARD (SIDE B) –