SRF-S84 (serv.man2) — Sony Audio Service Manual (repair manual)

Model
SRF-S84 (serv.man2)
Pages
12
Size
518.46 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
srf-s84-sm2.pdf
Date

View Sony SRF-S84 (serv.man2) Service Manual online

SRF-S84
SERVICE MANUAL
FM STEREO/AM RADIO
SPECIFICATIONS
E Model
Australian Model
Chinese Model
Tourist Model
Ver. 1.3  2006.10
Sony Corporation
Personal Audio Division
Published by Sony Techno Create Corporation
9-873-482-04
2006J02-1
© 2006.10
Frequency range
FM
: 87.5-108 MHz (EXCEPT Tourist model)
FM
: 76 - 108 MHz (Tourist model)
AM
: 530 -1605kHz
Output
2 (stereo earphones) jack (Ø3.5mm stereo minijack) load impedance 16
Power output
3.6mW + 3.6mW (at 10% harmonic distortion)
Power requirements
1.5 V DC, one R03 (rize AAA)
Dimensions
Approx.39.5 
×
 78.5 
×
 16.5 mm (w / h / d)(Approx. 1
9
/
16
 ×
 3
1
/
×
 
21
/
32 
inches)
not incl. projecting parts and contorols
Mass Approx.
61.2g (2.16 oz) incl. abattery and stereo earphones
Accessories supplied
stereo earphones (1)
Design and specifications are subject to change without notice
2
SRF-S84
Specifications ...........................................................................  1
1. GENERAL
Location and Function of Controls .................................... 2
2. DISASSEMBLY
2-1. Cabinet (Rear) ............................................................. 3
2-2. Main Board ................................................................. 3
3. DIAL POINTER INSTALLATION
........................... 4
4. ADJUSTMENTS
.......................................................... 5
5. DIAGRAMS
.................................................................... 6
6. EXPLODED VIEW
..................................................    10
7. ELECTRICAL PARTS LIST
.................................... 11
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.
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.
TABLE OF CONTENTS
SECTION 1
GENERAL
LOCATION AND FUNCTION OF CONTROLS
This section is extracted from
instruction manual.
3
SRF-S84
SECTION 2
DISASSEMBLY
Note :
 Follow the disassembly procedure in the numerical order given.
2-1. CABINET (REAR)
2-2. MAIN BOARD
r
 The equipment can be removed using the following procedure.
Cabinet (rear)
Set
Main board
Cabinet (front)
Main board
2
1
Cabinet (front)
Cabinet (rear)
4
Screw(B1.7 x 8)
1
Screw(B1.7 x 8)
2
Claw
2
Claw
3
Claws
4
4
SRF-S84
SECTION 3
DIAL POINTER INSTALLATION
Pointer
Cabinet (rear)
2
1
Pointer
Gear (tuning cpacitor)
Cabinet (rear)
Washer
Knob (tuning)
Gear (midway)
3
4
CV1
6
 Main board
Cabinet (rear)
5
1 Insert the pointer into the cabinet (rear).
2 Slide the pointer to arrow direction.
3 Install the gear (tuning capacitor), and engage with pointer as
a figure.
4 Install the gear (midway) and the knob (tuning), and fasten it
with washer.
5 Turn the CV1 in a direction as a figure.
6 Install the main board.
Note :
 Follow the installation procedure in the numerical order given.
SRF-S84
5
5
Procedure :
1. Connect the frequency counter to TP9 as shown the figure.
2. Turn the set to 98MHz.
3. Adjust L4 for 38kHz reading on frequency counter.
Standard Value : 37.95 –38.05kHz
FM VCO Adjustment
FM RF signal
generator
Carrier frequency : 98MHz
Modulation : no modulation
Output level : 100dB 
µV(100mV)
TP6 (RF IN)
MAIN board
0.01 
µF
 TUNER SECTION
 AM Section
Band : AM
Volume : MAX
 FM Section
Band : FM
Volume : MAX
SECTION 4
ADJUSTMENTS
AM  RF signal
generator
30% amplitude modulation by 400Hz
signal.
Output level : as low as possible
Put the lead-wire
antenna close to 
the set.
FM RF signal
generator
22.5: kHz frequency deviation by
400Hz signal
Output level : as low as possible
TP6 (RF IN)
MAIN board
0.06 
µF
set
16 
+
Headphone jack (J1)
level meter
0dB = 1
µV
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L3
CT4
520kHz
1,650kHz
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L5
CT3
520kHz
1,650kHz
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L6
CT1
86.5MHz <75MHz>
109.5MHz
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
CT2
86.5MHz <75MHz>
109.5MHz
Connect Location :
[MAIN BOARD] (SIDE B)
Adjustment Location :
CT1 : FM Frequency Coverage Adjustment
CT4 : AM Frequency Coverage Adjustment
L3 : AM Frequency Coverage Adjustment
L6: FM Frequency Coverage Adjustment
L2: FM 2ND OSC Adjustment
L5 : AM Tracking Adjustment
CT3: AM Tracking Adjustment
L1 : FM Tracking Adjustment
L4 : FM VCO Adjustment
CT2 : FM Tracking Adjustment
MAIN BOARD   (SIDE B)
MAIN BOARD   (SIDE A)
Procedure :
1. Connect the frequency counter to TP10 as shown the figure.
2. Turn the set to 98MHz.
3. Adjust L2 for 57.1MHz reading on frequency counter.
Standard Value : 56.85 –57.35MHz
2nd OSC Adjustment
FM RF signal
generator
Carrier frequency : 98MHz
Modulation : no modulation
Output level : 100dB 
µV(100mV)
TP6 (RF IN)
MAIN board
0.01 
µF
C12
C10
C23
R4
C7
C4
L2
L4
R3
C8
C11
R11
C18
L6
C21
1
16
20
25
30
15
IC1
Q1
C3
L3
C20
C19
S1
-2 -1
L5
AM
FERRITE-ROD
ANTENNA
C22
C9
TP8
TP9
TP10
11
(11)
1-682-982-
TP9
TP8
10
µF
Frequency
counter
1
µ
F
Connect Location :
[MAIN BOARD] (SIDE B)
C12
C10
C23
R4
C7
C4
L2
L4
R3
C8
C11
R11
C18
L6
C21
1
16
20
25
30
15
IC1
Q1
C3
L3
C20
C19
S1
-2 -1
L5
AM
FERRITE-ROD
ANTENNA
C22
C9
TP8
TP9
TP10
11
(11)
1-682-982-
TP10
10
µF
Frequency
counter
1
µ
F
TP8
Ver 1.1
<   > : Tourist model

Download Sony SRF-S84 (serv.man2) Service Manual (Repair Manual)

Here you can view online or download Sony SRF-S84 (serv.man2) Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sony SRF-S84 (serv.man2) Audio. Information contained in Sony SRF-S84 (serv.man2) 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).