Sony SHRM-1 Service manual
SHR-M1
SERVICE MANUAL
Ver 1.0 1999.10
SPECIFICATIONS
Radio segment
Frequency range: FM 76 – 108 MHz
Channel Step: 0.1 MHz
Power output: 3.5 mW + 3.5 mW
Headphone segment
Headphone type: Open-air Dynamic
Driver unit: ø 30 mm Dome type
Input: ø 3.5 mm stereo mini-jack
Maximum input: 100 mW
Impedance: 24 Ω (at 1 kHz)
Frequency characteristic: 14 to 24,000 Hz
Others
Power requirements 1.5 V DC, one R03 (size AAA) battery
Mass Approx. 99.5 g (3.5 oz) incl. a battery, not
Accessories supplied Sony R03 (size AAA) battery (1)
Design and specifications are subject to change without notice
E Model
Tourist Model
incl. cord
Connecting cord (1)
MICROFILM
PLL SYNTHESIZER
FM STEREO HEADPHONE RADIO
TABLE OF CONTENTS
d
SERVICE NOTE
1. GENERAL ·········································································· 3
2. DISASSEMBLY
2-1. Driver (030F023A)(L) ························································· 4
2-2. Jack Board············································································· 4
2-3. Driver (030F023A)(R) ························································· 5
2-4. Main Board ··········································································· 5
2-5. Key Board ············································································· 6
2-6. Belt ························································································ 6
3. ELECTRICAL ADJUSTMENT ···································· 7
4. DIAGRAMS
4-1. Block Diagram ······································································ 9
4-2. Printed Wiring Board — Main Board — ······················· 11
4-3. Schematic Diagram ·························································· 13
4-4. Printed Wiring Board — Key Board — ························· 15
4-5. Ic Pin Function Description ················································ 17
5. EXPLODED VIEWS ······················································ 18
6. ELECTRICAL PARTS LIST······································· 19
In order to repair the machine while the main power is on, connecting
tool the MAIN board with the KEY board with a dedicated tool (J2503-012-A), is convenient.
MAIN board
Tool (J-2503-012-A)
CN1
KEY boar
CN201
— 2 —
SECTION 1
GENERAL
This section is extracted
from instruction manual.
— 3 —
DISASSEMBLY
Note : Disassemble the unit in the order as shown below.
SECTION 2
Set
Driver (030F023A) (L)
Driver (030F023A) (R)
JACK Board
MAIN Board
KEY Board
Note : Follow the disassembly procedure in the numerical order given.
2-1. DRIVER (030F023A)(L)
1
Pad, ear
2
Cushion
5
3
Release the
three claws.
Driver
(030F023A)
4
Rear side (Remove the two solderings.)
Belt
Driver
(030F023A)
Lead wire (white)
Lead wire (red)
2-2. JACK BOARD
Precaution for installation
JACK board
Natural
Green + Natural
Green + Natural
Red
Green
Natural
Solder the lead wires (10 arbor) directly to the
position as shown while being cautious of colors.
Solder the lead wire (A) to ANT terminal directly.
Green
ANT
Red
Green + Red
Green + Natural
Cabinet assy
1
Two screws (+P2 × 8)
6
Remove the ten solderings.
3
Cabinet (lower)(L)
2
Release the
two claws.
5
Cabinet (main)(L)
7
Wire (10 arbor), lead
9
Lead wire (A)
qa
Remove the JACK board
in the direction of the arrow.
8
Remove the soldering.
qs
Screw (+P2 × 6)
Precaution for installation
Knob
Knob
Slide the S301 and S302 in the direction of the arrows.
J302
S302
S301
0
Release the claw.
— 4 —
4
Release the three claws.
qd
Cabinet (upper)(L)
Belt
2-3. DRIVER (030F023A)(R)
1
Pad, ear
2
Cushion
3
Release the
three claws.
2-4. MAIN BOARD
Precaution for installation
Rear side
JACK board
Driver
5
(030F023A)
4
Cabinet assy
2
Release the
three claws.
Rrear side (Remove the two solderings.)
Driver (030F023A)
Lead wire (white)
1
Lead wire (red)
Two screws (+P2 × 8)
3
Cabinet (lower)(R)
ANT
Green
Natural
Red
Green + Red
Green + Natural
Green + Red
Natural
Green + Natural
Solder the lead wires (10 arbor) directly to the
position as shown while being cautious of colors.
Solder the lead wire (A) to ANT terminal directly.
Red
Green
8
Wire (10 arbor), lead
5
Cabinet (main)(R)
qa
MAIN board
6
Remove the connector.
(CN1)
9
Remove the soldering
from the rear side.
7
Remove the ten solderings
from the rear side.
q;
Lead wire (A)
4
Release the three claws.
— 5 —
2-5. KEY BOARD
y
d
2-6. BELT
1
Screw (+P2 × 8)
2
Holder (button)
4
3
Belt
KEY board
Release the three claws.
5
Cabinet upper (R) ass
Precaution for installation
Right side
Marking
Mark at the 5.5 cm position from the tip of the lead
wire and align the marking with the center position
as shown in the illustration.
Attach the Cap (R) and leads with adhesive agent.
Wire (10 arbor), lead
5.5cm
Tip
3
Cap (R)
Lead wire (A)
Precaution for installation
Left side
Marking
Wire (10 arbor), lead
Center
Precaution for installation
Precaution for installation
Lead wire
(ten conductors)
Lead wire (A)
4
Hook (R)
2
Hook (L)
Lead wire (A)
6
Lead wire (A)
5
Wire (10 arbor), lea
7
Belt
Mark at the 9.5 cm position
from the tip of the lead wire
and align the marking with
the center position as shown
in the illustration.
Attach the Cap (L) and leads
with adhesive agent.
9.5cm
1
Cap (L)
Tip
Center
— 6 —
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