ICD-UX200, ICD-UX200F, ICD-UX300, ICD-UX300F, ICD-UX400F - Sony Audio Service Manual (repair manual). Page 9

[PLAY]: Loop Back Start
[VOL+], [VOL–]: Volume operation to set. (Initial value 20)
[DPC]: OFF: Sensitivity H, ON: Sensitivity L
[HOLD ON]: (ON: High sensitivity SH)
[A-B]: External mic select (MIC IN t AUDIO IN)

[REC]: AGC ON/OFF select (AGC ON y AGC OFF)

4.  SetMic Cal
Write the correction value for the level difference between L and R 
channels of the internal stereo microphone into the eMMC NAND 
memory. With the L channel level as the reference, measure the R 
channel recording level. Then adjust the R channel’s ADC VOL 
level so that the R channel level is equal to the L channel level.
* Make a mental note of the setting even when the battery has been 

removed.

[PLAY]: Recording start

5.  Beep
Test to Beep.

[PLAY]: 800 Hz t 1.3 kHz t 2.0 kHz t 800 Hz  ......

[STOP]: STOP

6.  LCD Cont
Adjust the LCD contrast.
* Make a mental note of the setting even when the battery has been 

removed.

Initial value: 46
[FF]: +
[FR]: –

7.  RTC Int
Perform a self- test on RTC.

The count is indicated every second.

8.  Battery
Check the current value of Battery A/D.

9.  Batt AB4
Check the current value of Battery x4A/D.

10.  VBUS TEST
Check the presence of VBUS.

[PLAY]: Suspend, LCD off
To reset, remove the battery and then insert it again.

11.  MENU INIT
Initialize the set values.

[PLAY]: Menu initialize start.

12.  Sleep
Perform a sleep test.
The LCD display disappears and then the sleep mode is entered. 
To exit the sleep mode, turn off power.
The power should be turned on again since resetting is not allowed.

<SetMIC Cal>

R-ch: –02dB

<LCD Cont>

Value: 46

[FF] + [FR] -

<RTC lnt>

01s

RTC lnt OK

<Battery> 

XxXX

<Batt4> 

XxXX

<Menu lnit> 

[PLAY]: ENTER

<VBUS Test> 

VBUS  OFF