Sony ICD-MS1 Service Manual ▷ View online
– 13 –
MAIN/SW BOARD
2
tapping screw
1
Remove two solders of the
battery terminal (+)/(–).
battery terminal (+)/(–).
4
connector (CN761)
3
claw
6
flexible board
(“connector unit, MS”) (CN723)
(“connector unit, MS”) (CN723)
5
Raise the MAIN board.
Note: Do not use an excessive force
when raising the MAIN board.
qs
LCD assy
8
SW board
7
connector
(CN722)
(CN722)
qd
MAIN board
9
Remove two solders of the
LED back light (D720).
LED back light (D720).
qa
flexible board
(“indicator module, liquid crystal”)
(CN724)
(“indicator module, liquid crystal”)
(CN724)
0
claw
0
two claws
– 14 –
EJECT ASSY
“CONNECTOR UNIT, MS”
slider (eject)
2
Remove the eject assy
to direction of the arrow.
to direction of the arrow.
1
screw
(M1.4
(M1.4
×
1.4)
slot
knob (eject)
Note: When assembling the eject assy,
engage the slider (eject) with
the slot in the knob (eject).
the slot in the knob (eject).
2
Remove the MS connector unit to
direction of the arrow A.
direction of the arrow A.
A
1
Open the claw.
1
Open the claw.
Note: Open the claw slowly with
a screwdriver,
because it is easily broken.
because it is easily broken.
– 15 –
AUDIO BOARD, “MICROPHONE UNIT, BACK ELECTRET” (MIC161)
Note:
Follow the assembly procedure in the numerical order given.
INSTALLATION BACK ELECTRET MICROPHONE UNIT (MIC161)
Note:
On installation AUDIO board, adjust S161, S761,
S763, S764 and knobs (HOLD, DBB)
7
“microphone unit, back electret” (MIC161)
3
guide (PWB)
1
Raise the
microphone cushion.
microphone cushion.
2
claw
8
AUDIO board
6
Remove two solders of the
back electret microphone unit
lead wires (MIC161).
back electret microphone unit
lead wires (MIC161).
5
claw
4
window (LED)
three knobs (DBB)
knob (HOLD)
S161
S763
S764
S761
#
guide (PWB)
bosses
slot
boss
guide (PWB)
2
Install the back electret microphone
unit (MIC161), aligning with three bosses.
unit (MIC161), aligning with three bosses.
Note: Take care not to allow the lead wires
to ride on the
!
portion.
1
Put two lead wires
in the slot of the guide (PWB).
in the slot of the guide (PWB).
3
Let excess lead wires
through the guide (PWB)
in the arrow direction.
through the guide (PWB)
in the arrow direction.
– 16 –
SECTION 4
TEST MODE
[Setting Method of Test Mode]
There are two different methods to set the test mode:
1
1
Short BP701 (TEST) on the MAIN board with a solder bridge
(connect pin <zmb of IC722 to the ground).
Then, insert the memory stick and turn on the power.
(connect pin <zmb of IC722 to the ground).
Then, insert the memory stick and turn on the power.
2
In the normal mode, insert the memory stick. While pressing
the
the
[STOP]
and
[MENU]
key, Turn the
[HOLD]
switch.
[Releasing Method of Test Mode]
For test mode set with the method 1:
Turn off the power and remove the memory stick. Then, open the
solder bridge on BP701 (TEST) on the MAIN board.
For test mode set with the method 2:
Turn off the power and remove the memory stick.
Turn off the power and remove the memory stick. Then, open the
solder bridge on BP701 (TEST) on the MAIN board.
For test mode set with the method 2:
Turn off the power and remove the memory stick.
[Operation in the Test Mode]
When the test mode is set, the LCD displays as shown below.
LCD display
1. Audio test
• Pressing the
z
key causes “SP DSP LOOP” to be displayed
on the LCD and the LED lights in red.
• Pressing the jog lever causes “LP DSP LOOP” to be displayed
on the LCD and the LED lights in green.
• Moving down the jog lever causes “MUTE ON” to be displayed
on the LCD and the LED lights in amber.
• Moving up the jog lever causes “MUTE OFF” to be displayed
on the LCD.
• Pressing the
[MENU]
key causes “1.3 kHz BEEP” to be dis-
played on the LCD and a beep to sound.
• Pressing the
[STOP]
key causes the set to return to the state at a
setting of test mode.
2. VOR test
• Turning the
[VOR]
switch ON causes “VOR TEST” to be dis-
played on the LCD, and when sounds are detected, “SOUND
!!!” is displayed on the LCD and the LED lights in red. Also,
when no sound is detected, “NO SOUND” is displayed on the
LCD and the LED goes off.
!!!” is displayed on the LCD and the LED lights in red. Also,
when no sound is detected, “NO SOUND” is displayed on the
LCD and the LED goes off.
• Turning the
[VOR]
switch OFF causes the set to return to the
state at a setting of test mode.
3. Sleep test
• Pressing the
S
key causes the set to enter sleep state in one
second.
(When the
(When the
[HOLD]
switch is OFF, the LCD goes off. Also, when
ON, “SLEEPING” is displayed on the LCD.)
• Pressing another key causes the set to release sleep state.
4. Power supply test (stop mode)
• When power supply is a dry battery and its voltage is over 2V,
the LCD lights in green. Also when the voltage is below 2V the
LED lights in red.
LED lights in red.
• When power supply is a DC power supply, the LED lights in
amber.
5. Destination switching
Pressing simultaneously the
[ A-B REPEAT]
key and jog lever
causes “for JAPAN” to be displayed on the LCD and LED lights
in green. Also, pressing simultaneously the
in green. Also, pressing simultaneously the
[ A-B REPEAT]
and
the
z
keys causes “for WORLD” to be displayed on the LCD
and LED lights in red.
T E S T M O D E - -
u C O M V e r :
r a b b i t b 1 . 0 0
z
BP701
Short: Test mode
Open: Normal mode
Open: Normal mode
)
(
– MAIN BOARD (Side B) –
z
R756
R711
R710
C730
C526
+
JC724
1
8
4
5
IC523
1
5
3
4
IC723
BP701
(TEST)
1-675-564-
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