NWZ-S754, NWZ-S755 - Sony Audio Service Manual (repair manual). Page 26

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NWZ-S754/S755
26
4-8-4.  Direct recording format select (FORMAT)
Note: Not used for the servicing.
4-8-5.  Built-in microphone check (MICCHK)
In this mode, the built-in microphone is checked.
Checking method:
1.  Enter the test mode.
2.  Press the [
v
]/[
V
] keys to select the “DIREC”, and press the [
B
key to enter the minor item.
3.  Press the [
v
]/[
V
] keys to select the “MICCHK”.
4.  Press the [
u
] key, the 
built-in microphone check
 is begun. In 
this state, the sound that the built-in microphone perceived is 
outputted from the headphone.
 
Screen display
MIC -> HP
[ VOL: 25 ]
5.  Press the [BACK] key, return to minor item selection screen.
4-9. FM
 
Screen display
MPTAPP (X.XX.XX)
 POWER
 AUDIO
 VIDEO
  VIDEO OUT
 OTHER
 CLESTE
 DAC
 DIREC
 
FM — RCVCHK
 NC
 SHUTDOWN
 EXITTEST
4-9-1.  Reception output check (RCVCHK)
FM tuning checked.
Checking method:
1.  Enter the test mode.
2.  Press the [
v
]/[
V
] keys to select the “FM”, and press the [
B
key to select the “RCVCHK”.
3.  Press the [
u
] key, “90.00 MHz” is displayed.
 
Screen display
FM RCVCHK
90.00 MHz
[VOL : 30]
[RSSI : XX]
[Sense-H : XX]
[Sense-L : XX]
4.  In this state, each time the [
b
] key is pressed, frequency is 
changes in the following order.
 
90.00 MHz (default) 
→ 76.00 MHz → 95.75 MHz → 107.75 
MHz 
→ 87.50 MHz → 98.00 MHz → 108.00 MHz → 100.00 
MHz
5.  In this state, each time the [
B
] key is pressed, the LCD back-
light brightness is switched.
6.  In this state, each time the [OPTION] key is pressed, color bar 
is displayed.
7.  In this state, slide the [HOLD] key from OFF to ON. Each time 
the [
B
]/[
b
] keys are pressed, frequency changes in 0.05 MHz.
8.  Press the [BACK] key, return to minor item selection screen.
4-10.  Noise canceller (NC)
 
Screen display
MPTAPP (X.XX.XX)
 POWER
 AUDIO
 VIDEO
  VIDEO OUT
 OTHER
 CLESTE
 DAC
 DIREC
 FM
 
NC GAIN-L
 SHUTDOWN  GAIN-R
  EXITTEST NCHPCHK
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