Sony CMT-DH70SWR / SA-WDH70SWR Service Manual ▷ View online
SERVICE MANUAL
Sony Corporation
Audio&Video Business Group
Published by Sony Techno Create Corporation
SA-WDH70SWR
SPECIFICATIONS
ACTIVE SUBWOOFER
9-889-564-01
2009F05-1
©
2009.06
AEP Model
Ver. 1.0 2009.06
• SA-WDH70SWR is the subwoofer in CMT-DH70SWR.
• When the operation of the SA-WDH70SWR is con-
• When the operation of the SA-WDH70SWR is con-
fi rmed, it is necessary to connect the HCD-DH70SWR.
Confi rm the HCD-DH70SWR and SA-WDH70SWR are
prepared beforehand when you repair.
• JIG
When disassembling the set, use the following jig (for speaker
When disassembling the set, use the following jig (for speaker
removal).
Part No. J-2501-238-A JIG FOR SPEAKER REMOVAL
Subwoofer
DIN power output (rated):
DIN power output (rated):
75 watts (6 ohms at 70 Hz, DIN)
Continuous RMS power output (reference):
100 watts (6 ohms at 70 Hz, 10%
THD)
THD)
Music power output (reference):
180 watts (6 ohms at 70 Hz, 10%
THD)
THD)
Speaker system:
Subwoofer system, Bass reflex
Speaker unit
Subwoofer: 130 mm, cone type
Rated impedance: 6 ohms
Dimensions (w/h/d):
Dimensions (w/h/d):
Approx. 171 × 300 × 315.6 mm
Mass:
Approx. 7.0 kg
General
Power requirements
AC 230 V, 50/60 Hz
Power consumption
70 watts (0.5 W in Power Saving Mode)
Design and specifications are subject to
change without notice.
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 dam-
aged by heat.
aged by heat.
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
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.
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
SA-WDH70SWR
2
SECTION 1
SERVICING NOTES
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
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
• 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.
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
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 viscous (sticky, less prone to fl ow)
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.
ADVANCE PREPARATION WHEN CONFIRMING OP-
ERATION
When the operation of the SA-WDH70SWR is confi rmed, it is
necessary to connect the HCD-DH70SWR.
Confi rm the HCD-DH70SWR and SA-WDH70SWR are prepared
beforehand when you repair.
ERATION
When the operation of the SA-WDH70SWR is confi rmed, it is
necessary to connect the HCD-DH70SWR.
Confi rm the HCD-DH70SWR and SA-WDH70SWR are prepared
beforehand when you repair.
CAPACITOR ELECTRICAL DISCHARGE PROCESSING
When checking the board, for the electric shock prevention, con-
nect the resistors to both ends of respective capacitors (C156 and
C157) to discharge the capacitors (C156 and C157).
When checking the board, for the electric shock prevention, con-
nect the resistors to both ends of respective capacitors (C156 and
C157) to discharge the capacitors (C156 and C157).
C157
C156
800
:/2 W
800
:/2 W
– AMP Board (Conductor Side) –
SA-WDH70SWR
3
SECTION 2
DISASSEMBLY
• This set can be disassembled in the order shown below.
2-1. DISASSEMBLY FLOW
Note: Follow the disassembly procedure in the numerical order given.
2-2. FRONT PANEL BLOCK
Note 1:
This illustration sees the set from bottom side.
SET
2-2. FRONT PANEL BLOCK
(Page
(Page
3)
2-3. REAR PANEL BLOCK
(Page
(Page
4)
2-4. AMP
BOARD
(Page
4)
3 Raise the panel front assy a little
by little from bottom to top of the set.
2 Insert the jig (Part No. J-2501-238-A) into a space
and raise the panel front assy gradually.
Note 2: When using a jig, please work so as not
to injure panel front assy and speaker
cabinet
assy.
bottom side
1 Insert a flat-head screwdriver into
a recess in the bottom of the set
to raise the panel front assy a little.
six bosses
2 Insert the jig (Part No. J-2501-238-A) into a space
and raise the panel front assy gradually.
Note 2: When using a jig, please work so as not
to injure panel front assy and speaker
cabinet
assy.
5 connector (CN115)
LED board
6 front panel block
4
SA-WDH70SWR
4
2-3. REAR PANEL BLOCK
Note:
This illustration sees the set from rear side.
2-4. AMP BOARD
Note:
This illustration sees the set from rear side.
1 six screws
(3.5
u 14)
2 connector (CN121)
3 power cord connector (CN61)
4 rear panel block
5 two screws
(BVTP
3
u 16)
2 connector
(CN127)
1 connector
(CN131)
6 heat sink
4 four screws
(BVTP
3
u 8)
4 four screws
(BVTP
3
u 8)
7 AMP board
3 connector (CN128)
