Read Sony AWP-ZX7 / CX-LZX7 Service Manual online
SERVICE MANUAL
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
Published by Sony Engineering Corporation
US Model
Canadian Model
AEP Model
UK Model
E Model
MICRO HI-FI COMPONENT SYSTEM
9-877-859-01
2004E1679-1
2004.05
Ver 1.0 2004.05
SPECIFICATIONS
CX-LZX7
• CX-LZX7 is the Amplifier, CD player, Tape
Deck and Tuner section in AWP-ZX7.
Main Unit
Amplifier section
For the U.S. model
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION:
With 6-ohm loads, both channels driven, from
120 – 10,000 Hz: rated 60 watts per channel
minimum RMS power, with no more than 10%
total harmonic distortion from 250 milliwatts to
rated output.
DISTORTION:
With 6-ohm loads, both channels driven, from
120 – 10,000 Hz: rated 60 watts per channel
minimum RMS power, with no more than 10%
total harmonic distortion from 250 milliwatts to
rated output.
North American model:
Continuous RMS power output (reference):
60 + 60 W
(6 ohms at 1 kHz, 10%
THD)
(6 ohms at 1 kHz, 10%
THD)
Total harmonic distortion less than 0.05% (6 ohms at
1 kHz, 30 W)
1 kHz, 30 W)
European model:
DIN power output (rated): 45 + 45 W
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
60 + 60 W
(6 ohms at 1 kHz, 10%
THD)
(6 ohms at 1 kHz, 10%
THD)
Music power output (reference):
100 + 100 W
(6 ohms at 1 kHz, 10%
THD)
(6 ohms at 1 kHz, 10%
THD)
Other models:
The following measured at 220 – 240 V AC, 50/60 Hz
DIN power output (rated): 45 + 45 W
DIN power output (rated): 45 + 45 W
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
60 + 60 W
(6 ohms at 1 kHz, 10%
THD)
(6 ohms at 1 kHz, 10%
THD)
Inputs
AUX IN (RCA pin jacks): Sensitivity 1 V,
AUX IN (RCA pin jacks): Sensitivity 1 V,
impedance 47 kilohms
Outputs
PHONES (stereo mini jack):
PHONES (stereo mini jack):
accepts headphones with
an impedance of 32 ohms
or more
an impedance of 32 ohms
or more
SPEAKER:
accepts impedance of
6 ohms
6 ohms
SUB WOOFER OUT:
voltage 1.5 V
CD player section
System
Compact disc and digital
audio system
audio system
Laser
Semiconductor laser
(
(
λ=770 – 810 nm)
Emission duration:
continuous
continuous
Frequency response
20 Hz – 20 kHz
Signal-to-noise ratio
More than 90 dB
Dynamic range
More than 90 dB
Tape deck section
Recording system
4-track 2-channel stereo
Frequency response
100 – 10,000 Hz, using
Sony TYPE I cassettes
Sony TYPE I cassettes
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
North American model:
North American model:
87.5 – 108.0 MHz
(100-kHz step)
(100-kHz step)
Other models:
87.5 – 108.0 MHz
(50-kHz step)
(50-kHz step)
Antenna
FM lead antenna
Antenna terminals
75 ohms unbalanced
Intermediate frequency
10.7 MHz
Model Name Using Similar Mechanism
NEW
CD
CD Mechanism Type
CDM69CV-F4BD81B2
Section
Base Unit Name
BU-F4BD81B2
Optical Pick-up Name
KSM-215CFP/C2NP
TAPE
Model Name Using Similar Mechanism
NEW
Section
Tape Transport Mechanism Type
CMAL1Z250A
— Continued on next page —
2
CX-LZX7
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK
0
OR DOTTED LINE
WITH MARK
0
ON 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.
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 IDENTIFÉS PAR UNE MARQUE
0
SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.
Model Name
Part No.
US model
4-254-181-0
<
AEP, UK models
4-254-181-1
<
E51 model
4-254-181-3
<
CND model
4-254-181-4
<
SP model
4-254-181-6
<
Korean model
4-254-181-7
<
• Abbreviation
CND
: Canadian model
E51
: Chilean and Peruvian models
KR
: Korean model
SP
: Singapore model
MODEL IDENTIFICATION
— Back Panel —
— Back Panel —
General
Power requirements
North American model:
North American model:
120 V AC, 60 Hz
European model:
230 V AC, 50/60 Hz
Korean model:
220 V AC, 60 Hz
Other models:
120 V, 220 V or
230 —
230 —
240 V AC, 50/60 Hz
Adjustable with voltage
selector
selector
Power consumption
North American model:
North American model:
60 W
European model:
60 W
0.3 W (in Power Saving
mode)
0.3 W (in Power Saving
mode)
Other models:
70 W
Dimensions (w/h/d) incl. projecting parts and controls
Amplifier/Tuner/Tape/CD section:
Amplifier/Tuner/Tape/CD section:
Approx. 190
´ 277 ´
361.4 mm
Mass
Amplifier/Tuner/Tape/CD section:
Amplifier/Tuner/Tape/CD section:
Approx. 6.2 kg
Design and specifications are subject to change
without notice.
without notice.
AM tuner section
Tuning range
Pan-American model:
Pan-American model:
530 —
1,710 kHz
(with the tuning interval
set at 10 kHz)
531 —
set at 10 kHz)
531 —
1,710 kHz
(with the tuning interval
set at 9 kHz)
set at 9 kHz)
European model:
531 —
1,602 kHz
(with the tuning interval
set at 9 kHz)
set at 9 kHz)
Other models:
530 —
1,710 kHz
(with the tuning interval
set at 10 kHz)
531 —
set at 10 kHz)
531 —
1,602 kHz
(with the tuning interval
set at 9 kHz)
set at 9 kHz)
Antenna
AM loop antenna, external
antenna terminal
antenna terminal
Intermediate frequency
450 kHz
Part No.
3
CX-LZX7
1.
SERVICING NOTES
................................................
4
2.
GENERAL
...................................................................
5
3.
DISASSEMBLY
3-1.
Side Panel (L)(R), Top Panel, Back Panel .......................
8
3-2.
CD Mechanism Section ...................................................
8
3-3.
Front Panel Section .........................................................
9
3-4.
FRONT Board .................................................................
9
3-5.
Cassette Deck Mechanism, USB Board .......................... 10
3-6.
Cassette Panel .................................................................. 10
3-7.
Power Transformer .......................................................... 11
3-8.
MAIN Board Section ....................................................... 11
3-9.
CD Mechanism Deck (CDM69CV-F4BD81B2) ............. 12
3-10. Optical Pick-up Section ................................................... 12
3-11. Base Unit (BU-F4BD81B2) ............................................ 13
3-12. BD Board, Optical Pick-up (KSM-215CFP/C2NP) ........ 13
3-13. SW Board, Bracket (TOP) Assy ...................................... 14
3-14. CONNECTOR Board ...................................................... 14
3-15. Motor (Stocker) Assy (Stocker)(M761) .......................... 15
3-16. Motor (Roller) Assy (Roller)(M781) ............................... 15
3-17. Motor (Mode) Assy (Mode)(M771) ................................ 16
3-18. Rubber Roller (Slider) Assy ............................................ 16
3-19. Timing Belt (Front/Rear) ................................................. 17
3-20. Cam (Gear) ...................................................................... 17
3-21. SENSOR Board ............................................................... 18
3-11. Base Unit (BU-F4BD81B2) ............................................ 13
3-12. BD Board, Optical Pick-up (KSM-215CFP/C2NP) ........ 13
3-13. SW Board, Bracket (TOP) Assy ...................................... 14
3-14. CONNECTOR Board ...................................................... 14
3-15. Motor (Stocker) Assy (Stocker)(M761) .......................... 15
3-16. Motor (Roller) Assy (Roller)(M781) ............................... 15
3-17. Motor (Mode) Assy (Mode)(M771) ................................ 16
3-18. Rubber Roller (Slider) Assy ............................................ 16
3-19. Timing Belt (Front/Rear) ................................................. 17
3-20. Cam (Gear) ...................................................................... 17
3-21. SENSOR Board ............................................................... 18
4.
ASSEMBLY
4-1.
How to Install the Cam (EJECT LOCK) ......................... 19
4-2.
How to Install the Cam (GEAR) ..................................... 19
4-3.
How to Install the Gear (MODE C) ................................ 20
4-4.
How to Install the Gear (MODE CAM) .......................... 20
4-5.
How to Install the Rotary Encoder (S702),
Gear (STOCKER COMMUNICATION) ........................ 21
Gear (STOCKER COMMUNICATION) ........................ 21
4-6.
How to Install the Stocker Assy ...................................... 21
5.
TEST MODE
............................................................... 22
6.
MECHANICAL ADJUSTMENTS
......................... 23
7.
ELECTRICAL ADJUSTMENTS
.......................... 23
8.
DIAGRAMS
8-1.
Block Diagram — BD/Changer Section — .................... 28
— MAIN Section — ....................................................... 29
— MAIN Section — ....................................................... 29
8-2.
Printed Wiring Boards — BD Section — ....................... 30
8-3.
Schematic Diagram — BD Section — ............................ 31
8-4.
Printed Wiring Boards — Changer Section — ............... 32
8-5.
Schematic Diagram — Changer Section — .................... 33
8-6.
Printed Wiring Boards — FRONT Section — ................ 34
8-7.
Schematic Diagram — FRONT Section — .................... 35
8-8.
Printed Wiring Boards — MAIN Section — .................. 36
8-9.
Schematic Diagram — MAIN Section 1 — .................... 37
8-10. Schematic Diagram — MAIN Section 2 — .................... 38
8-11. Schematic Diagram — MAIN Section 3 — .................... 39
8-12. Schematic Diagram — MAIN Section 4 — .................... 40
8-13. Schematic Diagram — MAIN Section 5 — .................... 41
8-14. Schematic Diagram
8-11. Schematic Diagram — MAIN Section 3 — .................... 39
8-12. Schematic Diagram — MAIN Section 4 — .................... 40
8-13. Schematic Diagram — MAIN Section 5 — .................... 41
8-14. Schematic Diagram
—MAIN Section 6/P ower Section — ............................ 42
8-15. Printed Wiring Boards — Power Section — ................... 43
8-16. Printed Wiring Boards — USB Section — ..................... 44
8-17. Schematic Diagram — USB Section — ......................... 44
8-16. Printed Wiring Boards — USB Section — ..................... 44
8-17. Schematic Diagram — USB Section — ......................... 44
9.
EXPLODED VIEWS
9-1.
Panel Section ................................................................... 52
9-2.
Front Section ................................................................... 53
9-3.
Chassis Section ................................................................ 54
9-4.
CD Mechanism Deck Section 1
(CDM69CV-F4BD81B2) ................................................ 55
(CDM69CV-F4BD81B2) ................................................ 55
9-5.
CD Mechanism Deck Section 2
(CDM69CV-F4BD81B2) ................................................ 56
(CDM69CV-F4BD81B2) ................................................ 56
9-6.
CD Mechanism Deck Section 3
(CDM69CV-F4BD81B2) ................................................ 57
(CDM69CV-F4BD81B2) ................................................ 57
9-7.
CD Mechanism Deck Section 4
(CDM69CV-F4BD81B2) ................................................ 58
(CDM69CV-F4BD81B2) ................................................ 58
9-8.
CD Mechanism Deck Section 5
(CDM69CV-F4BD81B2) ................................................ 59
(CDM69CV-F4BD81B2) ................................................ 59
9-9.
CD Mechanism Deck Section 6
(CDM69CV-F4BD81B2) ................................................ 60
(CDM69CV-F4BD81B2) ................................................ 60
9-10. CD Mechanism Deck Section 7
(CDM69CV-F4BD81B2) ................................................ 61
9-11. Optical Pick-up Section ................................................... 62
10. ELECTRICAL PARTS LIST
.................................. 63
TABLE OF CONTENTS
4
CX-LZX7
SECTION 1
SERVICING NOTES
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
• 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.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following
safety checks before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts for AC leakage. Check leakage as
described below.
safety checks before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts for AC leakage. Check leakage as
described below.
LEAKAGE
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes).
Leakage current can be measured by any one of three methods.
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’ instructions to use these
instruments.
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The “limit” indication
is 0.75 V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples
of a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2V AC range are suitable. (See
Fig. A)
is 0.75 V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples
of a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2V AC range are suitable. (See
Fig. A)
1.5 k
Ω
0.15
µ
F
AC
voltmeter
(0.75 V)
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Parts on Set
Earth Ground
Fig.A. Using an AC voltmeter to check AC leakage.
This appliance is classified as a CLASS 1 LASER product. The
CLASS 1 LASER PRODUCT MARKING is located on the rear
exterior.
CLASS 1 LASER PRODUCT MARKING is located on the rear
exterior.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation
exposure.
other than those specified herein may result in hazardous radiation
exposure.
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
exceeding the limit for Class 1.
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
break-down 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.
break-down 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.
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 DIODE AND FOCUS SEARCH OPERATION
CHECK
CHECK
Carry out the “S curve check” in “CD section adjustment” and check
that the S curve waveforms is output three times.
that the S curve waveforms is output three times.
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
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 irons using a temperature regulator should be set to
about 350
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
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.
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.
also be added to ordinary solder.
