Sony SAVA-500 / SS-CN16 / SS-SR16 Service Manual ▷ View online
3
SECTION 1
SERVICING NOTES
MODEL IDENTIFICATION
– Rear view –
SAFETY CHECK-OUT
After correcting the original service problem, perform the follow-
ing 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.
ing 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
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” indica-
tion is 0.75 V, so analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex-
amples of a passive VOM that is suitable. Nearly all battery
operated digital multimeters that have a 2 V AC range are suit-
able. (See Fig. A)
tion is 0.75 V, so analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex-
amples of a passive VOM that is suitable. Nearly all battery
operated digital multimeters that have a 2 V AC range are suit-
able. (See Fig. A)
Fig. A.
Using an AC voltmeter to check AC leakage.
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
MODEL
PART No.
US model
4-217-252-3
Canadian model
4-217-252-4
EXCEPT US, Canadian models
4-217-252-5
PART No.
4
SECTION 2
GENERAL
• LOCATION OF CONTROLS
Main Unit (L-ch)
– Front View –
– Front View –
1 INPUT button
2 SURROUND button
3 CENTER MODE button
4 S. WOOFER button
5 MASTER VOL +/– buttons
6 STANDBY, ON, READY indicators
7 U button
2 SURROUND button
3 CENTER MODE button
4 S. WOOFER button
5 MASTER VOL +/– buttons
6 STANDBY, ON, READY indicators
7 U button
1 TV IN jack
2 VIDEO IN jack
3 AUX IN jack
4 5.1CH INPUT (FRONT, REAR, WOOFER, CENTER) jack
5 CONTROL S, TV IN jack (US, Canadian models)
6 WIRELESS REAR SPEAKER jack
7 CENTER SPEAKER terminal
8 REAR SPEAKERS terminal
9 R-ch SPEAKER OUTPUT connector
2 VIDEO IN jack
3 AUX IN jack
4 5.1CH INPUT (FRONT, REAR, WOOFER, CENTER) jack
5 CONTROL S, TV IN jack (US, Canadian models)
6 WIRELESS REAR SPEAKER jack
7 CENTER SPEAKER terminal
8 REAR SPEAKERS terminal
9 R-ch SPEAKER OUTPUT connector
– Rear View –
2 3 4
1
5
6
7
1
2
3
2
3
4
5
6
7
8
9
9
5
AMPLIFIER SECTION
Note:
Follow the disassembly procedure in the numerical order given.
SECTION 3
DISASSEMBLY
2
grille frame (A)
ass’y
ass’y
3
screw
(BVTT4
(BVTT4
×
25)
6
screw
(BVTT4
(BVTT4
×
25)
4
washer
(BF)
(BF)
5
washer
(S)
(S)
L-ch speaker section
7
flat wire
(CN503)
(CN503)
8
connector
(CN907)
(CN907)
1
grille frame (B) ass’y
!º
five screws
(BVTP3
(BVTP3
×
8)
!™
connector
!£
Remove the amplifier
section in arrow
section in arrow
B
direction.
!¡
Remove the panel (L/B)
in arrow
in arrow
A
direction.
9
eleven screws
(4
(4
×
20)
B
A
6
SERVICE POSITION
2
two screws
(transistor)
(transistor)
!¡
eleven screws
(BVTP3
(BVTP3
×
8)
5
heatsink and
AMP board
AMP board
7
bracket
6
two screws
(BVTP3
(BVTP3
×
8)
8
connector
(CN371)
(CN371)
6
screw
(BVTP3
(BVTP3
×
8)
4
two connectors
(CN601, 603)
(CN601, 603)
!º
connector
!™
back panel (L/A)
1
Remove the amplifier section. (Refer to page 5)
3
two screws
(BVTP3
(BVTP3
×
8)
9
cord bushing
!£
two screws
(BVTP3
(BVTP3
×
8)
A
!¢
Erect the MAIN boad
in arrow
in arrow
A
direction.
!£
two screws
(BVTP3
(BVTP3
×
8)
!£
four screws
(BVTP3
(BVTP3
×
8)