AC-LF1HR, DAV-LF1H — Sony Audio Service Manual (repair manual)

Model
AC-LF1HR DAV-LF1H
Pages
15
Size
947.27 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
ac-lf1hr-dav-lf1h.pdf
Date

View Sony AC-LF1HR / DAV-LF1H Service Manual online

SERVICE MANUAL
Sony Corporation
Home Audio Division
Published by Sony Techno Create Corporation
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
Chinese Model
AC ADAPTOR
9-887-281-03
2006J16-1
© 2006.10
Ver. 1.2  2006.10
SPECIFICATIONS
AC-LF1HR
• AC-LF1HR is AC adaptor in DAV-LF1H.
AC adaptor
P
System connection on the AC adaptor
Output voltage
ower requirements 
120 V AC
US, Canadian and Mexican models:
DC 32.5 V/Output current
for SA-TSLF1H 1.0 A
(maximum current is 5 A)
Other models:
220 – 240 V AC, 50/60 Hz
Taiwan model:
120 V AC, 50/60 Hz
Korean model:
220 V AC, 60 Hz
Chinese model:
220 V AC, 50/60 Hz
, 60 Hz
Power consumption
45 W
Dimensions (approx.)
219 
× 44 × 82 mm
(8 
5
/
 × 1 
3
/
4
 × 3 
1
/
4
  inches) 
(w/h/d)
Mass (approx.)
0.7 kg (1 lb 9 oz)
Design and specifications are subject to change 
without notice.
2
AC-LF1HR
TABLE OF CONTENTS
1.
SERVICING NOTES
................................................
3
2.
GENERAL
...................................................................
4
3.
DISASSMEBLY
3-1.
Disassembly Flow ...........................................................
5
3-2.
Chassis .............................................................................
6
3-3.
DIAT POWER Board ......................................................
6
3-4.
POWER SWITCH (LFZ) Board And
SW LED Board ...............................................................
7
3-5.
Top Cabinet .....................................................................
8
4.
DIAGRAMS
4-1.
Block Diagram ................................................................ 10
4-2.
Printed Wiring Board ....................................................... 11
4-3.
Schematic Diagram ......................................................... 12
5.
EXPLODED VIEWS
5-1.
Overall Section ................................................................ 13
6.
ELECTRICAL PARTS LIST
.................................. 14
SAFETY  CHECK-OUT
After correcting the original service problem, perform the following
safety check 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  TEST
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.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’ instructions to use these
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 2 V AC range are suitable.  (See
Fig. A)
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 the 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 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.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
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.
ATTENTION  AU  COMPOSANT  AYANT  RAPPORT
À  LA  SÉCURITÉ!
LES  COMPOSANTS  IDENTIFIÉS  PAR  UNE  MARQUE  
0
 SUR
LES  DIAGRAMMES  SCHÉMATIQUES  ET  LA  LISTE  DES
PIÈCES  SONT  CRITIQUES  POUR  LA  SÉCURITÉ  DE
FONCTIONNEMENT.  NE  REMPLACER  CES  COM-  POSANTS
QUE  PAR  DES  PIÈCES  SONY  DONT  LES  NUMÉROS  SONT
DONNÉS  DANS  CE  MANUEL  OU  DANS  LES  SUPPLÉMENTS
PUBLIÉS  PAR  SONY.
1.5 k
0.15 
µ
F
AC
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
Fig. A.
Using an AC voltmeter to check AC leakage.
Ver. 1.2
3
AC-LF1HR
SECTION 1
SERVICING NOTES
 SERVICING POSITION
DIAT POWER board
Refer to figure, and inspect the DIAT POWER board.
SW LED board
(CN905) 
POWER SWITCH (LFZ) board 
(CN901) 
CN907 
CN903
The units that are required for the system operation check during repair service
Unit
required for checking
Unit to be
checked
DVD player:
HCD-LF1H
Subwoofer:
SA-WSLF1H
Front speaker:
SS-TSLF1H
Center speaker:
SS-CTLF1H
Surround speaker (L):
SA-TSLF1H
AC adaptor:
AC-LF1HR
Surround speaker (R):
SS-TSLF1HW
Remote commander:
RM-ADP011
DVD player:
HCD-LF1H
Subwoofer:
SA-WSLF1H
Front speaker:
SS-TSLF1H
Center speaker:
SS-CTLF1H
Surround speaker
(L): SA-TSLF1H
AC adaptor:
AC-LF1HR
Surround speaker
(R): SS-TSLF1HW
*1  Only the defective unit.
Units with 
a
 mark: The units that are required for the system operation check during repair service.
(However, there can be a case that some units of the system need to not be brought into repair shop depending on the unit.that become defective.)
*1
4
AC-LF1HR
SECTION 2
GENERAL
This section is extracted
from instruction manual.
AC adaptor
A
SA-TSLF1H jack (24)
B
DIR-R3 jack (33)
C
POWER indicator (29)
D
POWER (29)
SA-TSLF1H
DIR-R3
Page of 15
Display

Download Sony AC-LF1HR / DAV-LF1H Service Manual (Repair Manual)

Here you can view online or download Sony AC-LF1HR / DAV-LF1H Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sony AC-LF1HR / DAV-LF1H Audio. Information contained in Sony AC-LF1HR / DAV-LF1H service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).