HCD-LV80, LBT-LV80 - Sony Audio Service Manual (repair manual)

hcd-lv80, lbt-lv80 service manual
Model
HCD-LV80 LBT-LV80
Pages
91
Size
8.98 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
hcd-lv80-lbt-lv80.pdf
Date

Read Sony HCD-LV80 / LBT-LV80 Service Manual online

1
HCD-LV80
E Model
SPECIFICATIONS
COMPACT Hi-Fi STEREO SYSTEM
— Continued on next page —
Model Name Using Similar Mechanism
HCD-VR50/VR70
CD Mechanism Type
CDM37L-5BD34L
Base Unit Type
BU-5BD34L
Optical Pick-up Type
KSS-213D/Q-NP
Model Name Using Similar Mechanism
NEW
Tape Transport Mechanism Type
TCM-230PWR12
CD
SECTION
TAPE DECK
SECTION
SERVICE MANUAL
HCD-LV80 is the tuner, deck, CD and
amplifier section in LBT-LV80.
Amplifier section
The following  measured  at AC 120/220/240 V, 
50/60 Hz
DIN power  output  (Rated)
240 + 240 watts
(4 ohms  at  1 kHz,  DIN)
Continuous RMS 
power output (Reference)
300 + 300 watts
                                               (4 ohms at 1 kHz, 10 %
THD)
Inputs
PHONO IN (phono jacks):
sensitivity 3 mV,
                                               impedance 47 kilohms
MIC 1/2  (phono  jack):
sensitivity  1 mV,
                                               impedance 10 kilohms
VIDEO 1 IN (phono  jacks):sensitivity  250 mV,
                                               impedance 47 kilohms
VIDEO 2 IN (phono  jacks):sensitivity  250 mV,
impedance 47 
kilohms
MD IN (phono  jacks):
sensitivity  450 mV,
                                               impedance 47 kilohms
Outputs
PHONES (stereo phone jack):
accepts headphones of
8 ohms  or  more
VIDEO OUT (phono jack): voltage 250 mV,
                                               impedance 1 kilohm
MD OUT (phono  jacks):
voltage  250 mV,
                                               impedance 1 kilohm
FRONT SPEAKER :
accepts impedance of 4 to
16 ohms
Video section
Inputs
VIDEO1 IN (phono  jacks): 1 V p-p, 75 ohms
VIDEO2 IN (phono  jacks): 1 V p-p, 75 ohms
Outputs
VIDEO  OUT  (phono  jack): 1 V p-p,  75 ohms
S-VIDEO OUT (4-pin/mini-DIN jack):
Y: 1 V p-p,  unbalanced,
Sync negative,
C: 0.286 V p-p,
load impedance 75 ohms
VIDEO CD/CD player  section
System
Compact disc, digital
audio and video system
Laser
Semiconductor laser
(
λ
 
= 780 ohm),  Emission
duration : 
continuous
Laser output
Max. 44.6 
µW*
* This  output  is  the  value
measured at a 
distance of
200 mm  from  the
objective lens surface on
the Optical  Pick-up  Block
with 7 mm aperture.
Wavelength
780 - 790 nm
Frequency Response
2 Hz  - 20 kHz  (
±0.5 dB)
Signal-to-noise ratio
More than 90 
dB
Dynamic range
More than 90 dB
CD DIGITAL OUT
(square optical connector jack, rear panel)
Video color system format
NTSC, PAL
Wave length:
660 nm
Output level:
–18 
dBm
Tape player  section
Recording system
4-track 2-channel stereo
Frequency Response (DOLBY NR OFF)
40 - 13,000 Hz  (
±3 dB),
using a Sony TYPE I
cassette
40 - 14,000 Hz  (
±3 dB),
using a Sony TYPE II
cassette
Ver 1.
1
 
 
200
3
. 0
7
9-929-222-12
2003G02-1
© 2003.07
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
2
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
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.
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.
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.
The CLASS 1 LASER PROD-
UCT MARKING is located on
the rear exterior.
This caution
label is located
inside the unit.
Tuner section
FM Stereo, FM/AM superheterodyne tuner
FM tuner  section
Tuning  range
87.5 - 108.0 MHz  (50 kHz
step)
Antenna:
FM Wire  antenna
Antenna terminals
75 ohm unbalanced
Intermediate frequency
10.7 MHz
AM tuner  section
Tuning range
Middle  Eastern  models:
531 - 1,602 kHz  (with  the
tuning interval set at
9 kHz)
Other models:
531 - 1,602 kHz (with the
tuning interval set at
9 kHz)
530 - 1,701 kHz  (with  the
tuning interval set at
10 kHz)
Antenna
AM loop  antenna,
External antenna
terminals
Intermediate frequency
450 
kHz
General
Power  Requirements
120 V,  220 V,  or  230 - 240
V AC, 50/60  Hz
Adjustable with voltage
selector
Power Consumption
300 watts
Dimensions(w/h/d)
Approx. 356 
× 423 × 446
incl. projecting  parts  and
controls
Mass
                                               Approx. 15.9 kg
Supplied Accessories
AM loop antenna (1)
FM wire  antenna  (1)
Speaker cords (2)
                                               Remote (1)
R6(size AA) batteries  (2)
Video connecting  cable
(1)
Design and specifications  are subject to change
without notice.
3
MODEL
PARTS No.
MY, SP model
4-227-751-2s
EA model
4-227-751-3s
NOTES ON HANDLING THE OPTICAL PICK-UP 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.
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, ob-
serve from more than 30 cm away from the objective lens.
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
Carry out the “S curve check” in “CD section adjustment” and check
that the S curve waveform is output four times.
MODEL IDENTIFICATION
— BACK PANEL —
• Abbreviation
SP
: Singapore model
EA
: Saudi Arabia model
MY
: Malaysia model
Parts No.
4
8. EXPLODED VIEWS
8-1. Case and Back Panel Section .............................................. 66
8-2. Front Panel Section 1 .......................................................... 67
8-3. Front Panel Section 2 .......................................................... 68
8-4. Chassis Section ................................................................... 69
8-5. TC Mechanism Section 1 (TCM230PWR12) ..................... 70
8-6. TC Mechanism Section 2 (TCM230PWR12) ..................... 71
8-7. CD Mechanism Section (CDM37L-5BD34L) .................... 72
8-8. Base Unit Section (BU-5BD34L) ....................................... 73
9. ELECTRICAL PARTS LIST
........................................ 74
1. SERVICING NOTE
.......................................................... 5
2. GENERAL
....................................................................
9
3. DISASSEMBLY
3-1. Front Panel and Video Board .............................................. 11
3-2. Main Board ......................................................................... 11
3-3. Sub Panel ............................................................................ 12
3-4. CD LID Assembly .............................................................. 12
3-5. Tape Mechanism Deck and Cassette LID ........................... 12
3-6. CD Mechanism Deck .......................................................... 13
3-7. Base Unit ............................................................................. 13
3-8. Disc Table ........................................................................... 13
4. TEST  MODE
..............................................................
14
5. MECHANICAL ADJUSTMENTS
..........................
15
6. ELECTRICAL ADJUSTMENTS
............................... 15
7. DIAGRAMS
7-1. Circuit Boards Location ...................................................... 19
7-2. Block Diagrams
• BD Section ....................................................................... 20
• Deck Section .................................................................... 21
• Main (1/2) Section ........................................................... 22
• Main (2/2) Section ........................................................... 23
• Video Section ................................................................... 24
• Power Section .................................................................. 25
• Display Section ................................................................ 26
7-3. Printed Wiring Board – BD Section – ................................. 28
7-4. Schematic Diagram – BD Section – ................................... 29
7-5. Schematic Diagram – Deck Section – ................................. 30
7-6. Printed Wiring Board – Deck Section – .............................. 31
7-7. Printed Wiring Board – Video Section – ............................. 32
7-8. Schematic Diagram – Video (1/3) Section – ....................... 33
7-9. Schematic Diagram – Video (2/3) Section – ....................... 34
7-10. Schematic Diagram – Video (3/3) Section – ..................... 35
7-11. Printed Wiring Board – Main Section – ............................ 36
7-12. Schematic Diagram – Main (1/3) Section – ...................... 37
7-13. Schematic Diagram – Main (2/3) Section – ...................... 38
7-14. Schematic Diagram – Main (3/3) Section – ...................... 39
7-15. Printed Wiring Board – Power Section – ......................... 40
7-16. Schematic Diagram – Power Section – ............................ 41
7-17. Printed Wiring Board – Panel FL Section – ..................... 42
7-18. Schematic Diagram – Panel FL Section – ........................ 43
7-19. Printed Wiring Board – Panel VR Section – .................... 44
7-20. Schematic Diagram – Panel VR Section – ....................... 45
7-21. Printed Wiring Board – TC Panel Section – ..................... 46
7-22. Schematic Diagram – TC Panel Section – ....................... 47
7-23. Printed Wiring Board – CD Panel Section – .................... 48
7-24. Schematic Diagram – CD Panel Section – ....................... 49
7-25. Printed Wiring Board – CD Motor Section – ................... 50
7-26. Schematic Diagram – CD Motor Section – ...................... 51
7-27. Schematic Diagram – Trans Section – ............................. 52
7-28. Printed Wiring Board – Trans Section – ........................... 53
7-29. Schematic Diagram – Leaf SW Section – ........................ 53
7-30. Printed Wiring Board – Leaf SW Section – ..................... 53
7-31. IC Block Diagrams ........................................................... 54
7-32. IC Pin Functions ............................................................... 56
TABLE OF CONTENTS
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Here you can read online and download Sony HCD-LV80 / LBT-LV80 Service Manual in PDF. HCD-LV80 / LBT-LV80 service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony HCD-LV80 / LBT-LV80 Audio. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.