ICD-B100, ICD-B200 - Sony Audio Service Manual (repair manual). Page 8

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8
ICD-B100/B200
2) MOJI test
The MOJI test is intended to show the character display (characters/
digits). When this test mode is selected, the initial screen displays
the blinking characters “MOJI”. The MOJI test is executed by
pressing the  Bx  key while the “MOJI”characters are blinking.
Pressing of the  x STOP  key during any display of the MOJI test
will return to the initial screen for LCD test. The MOJI test includes
the following displays:
3-3-5. BEEP test
The beep test is intended to sound 2.4 kHz beeps. When this test
mode is selected, the initial screen displays the blinking characters
“BEEP”. The beep test is executed by pressing the  Bx  key while
the “BEEP” characters are blinking. By pressing the  x STOP  key,
the beep sound will stop returning you to the initial screen for beep
test. The beep test includes the following displays:
Initial screen 
for LCD TEST
STOP
This cycle is repeated until 
the 
   
 key is pressed (toggle).
Character display
3-3-6. Battery value
The voltage value of the battery inserted into the set is displayed in
hexadecimal format. The value is invalid when the adapter is inserted.
STOP
Initial screen 
for BEEP TEST
beep 
3-3-7. DSP LOOP test
The DSP loop test has the following flow:
DSP
MIC
MIC AMP
POWER
 AMP
SPEAKER
Note : Incoming voice data from the MIC is outputted to the 
          speaker as it is.
Voice
Voice
VOICE
Voice
Voice
Battery voltage value 
(HEX value)
BATTERY display screen
The initial screen for DSP loop test displays the blinking characters
“DSP”. The DSP loop test is executed by pressing the  Bx  key
while the “DSP” characters are blinking. Pressing of the  x STOP
key during any display of DSP loop test will return you to the initial
screen for DSP loop test.
The volume can be changed by using the VOLUME+  or  VOLUME–
key. The volume value can be set to 0 to 30 levels, but is not displayed
on the screen when changed. The DSP loop test includes the
following displays:
STOP
STOP
STOP
SP MODE
LP MODE
HQ MODE
Initial screen for 
DSP LOOP TEST
Note: The volume value can be set to 0 to 30 levels, 
               but is not displayed on the screen when changed.
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