CMT-C5, SA-C5B — Sony Audio Service Manual (repair manual)

Model
CMT-C5 SA-C5B
Pages
6
Size
710.13 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
cmt-c5-sa-c5b.pdf
Date

View Sony CMT-C5 / SA-C5B Service Manual online

SA-C5B
AEP Model
UK Model
E Model
Australian Model
Chinese Model
SERVICE MANUAL
SPEAKER SYSTEM
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
9-873-219-03
2002A1600-1
© 2002.1
• SA-C5B is the speaker system
in CMT-C5.
SPECIFICATIONS
Ver 1.2  2002. 01
Speaker system
Two-way, bass reflex
system
Speaker units
9 cm dia., cone type
woofer
2.5 cm dia., balance drive
tweeter
Rated impedance
6 ohms
Dimensions (w/h/d)
Approx. 149 
× 248 ×
220 mm
Mass
Approx. 1.9 kg net per
speaker
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.
2
SA-C5B
SERVICE NOTE
[When bringing in the equipment for service]
The notice is shown on both Warranty Card and Repair Service column of operation manual, telling to bringing in both
of the equipment (HCD-C5) and speaker system (SA-C5B) together to service station when service (repair) is needed.
[How to check speaker only]
When only speaker is brought in for service, check its operations by supplying both the power and the signal to the AMP
board of the speaker as shown below.
Check method :
1.Perform connection as shown below.
 DC regulated power supply 1 (+5 V)
It functions to turn on the speaker relay driver.
 DC regulated power supply 2 (
±
20 V)
It is desirable to use the DC regulated power supply of the dual tracking type that can supply its output voltages in two
polarities of positive and negative polarities. However, the two units of the DC regulated power supply that supplies
only a single output voltage can also be used. (See the figure below.)
Audio signal generator
Output frequency : 1 kHz
Output voltage
: 100mV p-p or less
Output impedance : 600 
2.Turn on the main power of the DC regulated power supply 2.
Then turn on the main power of the DC regulated power supply 1 (+ 5 V).
After that, input the output signal of the audio signal generator as shown.
3.Check that the LED (D831, D832 (BLUE)) turns on and the audio signal can be heard from the speaker.
Notes :
1
For the speaker cord, disconnect it from the speaker or leave it open.
2
Be careful not to apply an excessive input audio signal to the speaker.
3
If the power voltage is less than +/- 14 V, the speaker relay will not be activated.
[Caution when removing the front panel]
The special screwdriver (Sony part code No. 7-640-005-55) of star type (six star type) is required to remove the front
panel.
9
8
7
6
5
4
3
2
1
DC regulated
 power supply 2
Audio signal
generator
RELAY
SP-GND
+B
POWER-GND
-B
SHIELD GND
PRE-SIGNAL
CN801
AMP board
LED (BLUE)
Speaker
DC regulated
 power supply 1
+5V
GND
GND
+
+
+20V
-20V
AUDIO SIGNAL
COM
-
-
DC regulated
power supply
+
-
DC regulated
power supply
+
-
7
6
5
4
3
+B
POWER-GND
-B
CN801
+20V
-20V
Ver 1.1  2001.09
3
3
SA-C5B
• Semiconductor
Location
(AMP BOARD)
IC801
1
2
4
5
91
12
1
2
D831, D832
– BACK LIGHT FOR SP2 –
• Semiconductor
Location
(LED BOARD)
1-1. PRINTED WIRING BOARD
Ref. No.
Location
D831
A-5
D832
A-5
Ref. No.
Location
D821
B-3
IC801
C-1
Q821
B-1
Q822
C-2
Q823
C-2
Q824
C-3
SECTION 1
DIAGRAMS
Note on Printed Wiring Board:
• X
: parts extracted from the component side.
: Pattern from the side which enables seeing.
• Indication of transistor
B
These are omitted.
C
E
Q
4
4
SA-C5B
D831, D832
– BACK LIGHT FOR SP2 –
1-2. SCHEMATIC DIAGRAM
Note on Schematic Diagram:
• All capacitors are in 
µF unless otherwise noted.  p: pF.
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in 
Ω and 
1
/
4
 
W or less unless otherwise
specified.
• 2 : nonflammable resistor.
• C : panel designation.
Note: The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
• A : B+ Line.
• B : B– Line.
• Voltages and dc with respect to ground under no-signal
conditions.
no mark : AUDIO
• Voltages are taken with a VOM (Input impedance 10 M
Ω).
Voltage variations may be noted due to normal produc-
tion tolerances.
Ver 1.2  2002.1
SECTION 2
EXPLODED VIEWS
NOTE:
-XX, -X mean standardized parts, so they may
have some differences from the original one.
Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering these
items.
The mechanical parts with no reference number
in the exploded views are not supplied.
Hardware (# mark) list and accessories and
packing materials are given in the last of this
parts list.
5
SA-C5B
not 
supplied
#4
#4
#3
#1
#2
#2
7
not 
supplied
not 
supplied
not 
supplied
not 
supplied
8
5
not 
supplied
5
8
9
11
12
13
10
SP2
SP1
Ref. No.
Part No.
Description
Remarks
Ref. No.
Part No.
Description
Remarks
1
X-4953-847-1 FRAME ASSY, GRILLE
2
4-234-735-01 SCREW, ORNAMENT
3
4-234-729-01 SCREW (P), ORNAMENT
4
4-234-725-01 PANEL, FRONT
5
4-234-730-01 PACKING (A)
7
1-681-713-11 LED BOARD
8
4-874-614-71 SCREW
9
4-234-724-01 CABINET, SPEAKER
10
1-757-788-11 CORD, CONNECTION
11
4-235-539-01 PLATE
12
4-234-726-01 BASE (STAND)
13
A-4476-915-A AMP BOARD, COMPLETE
SP1
1-544-854-11 SPEAKER (2.5cm)
SP2
1-544-853-11 SPEAKER (9cm)
#1
7-685-662-79 SCREW +BVTP 4X14 TYPE2 N-S
#2
7-682-563-04 SCREW +B 4X12
#3
7-682-548-04 SCREW +B 3X8
#4
7-685-871-01 SCREW +BVTT 3X6 (S)
Ver 1.2  2002.1

Download Sony CMT-C5 / SA-C5B Service Manual (Repair Manual)

Here you can view online or download Sony CMT-C5 / SA-C5B Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sony CMT-C5 / SA-C5B Audio. Information contained in Sony CMT-C5 / SA-C5B 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).