NW-HD3 - Sony Audio Service Manual (repair manual). Page 13

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13
NW-HD3
5-2-7. Digital sound preset check
“100 Hz/10 kHz   0 dBs   L-ch/R-ch VOLUME: 27” audio signal is
outputted.
Checking method:
1. Enter the audio test mode.
2. Press the 
 , 
 key to display major item, and press the  M   m
key to select the “AUDIO”.
3. Press the 
 , 
 key to display minor item, and press the  M   m
key to select the “DSP 1”.
4. Press the 
 Bx 
 key, “START” is displayed and “100 Hz   0 dBs   L-
ch/R-ch VOLUME: 27” audio signal is outputted. In this state,
each time [MODE] key is pressed, Base +3/–4 switch is performed.
5. Press the [MENU] key, return to minor item selection screen.
6. Press the  M   m   key to select the “DSP 2”.
7. Press the 
 Bx 
 key, “START” is displayed and “10 kHz   0 dBs   L-
ch/R-ch VOLUME: 27” audio signal is outputted. In this state,
each time [MODE] key is pressed, Treble +3/–4 switch is performed.
8. Press the [MENU] key, return to minor item selection screen.
5-2-8. BEEP check
BEEP sound is outputted.
Checking method:
1. Enter the audio test mode.
2. Press the 
 , 
 key to display major item, and press the  M   m
key to select the “AUDIO”.
3. Press the 
 , 
 key to display minor item, and press the  M   m
key to select the “BEEP”.
4. Press the 
 Bx 
 key, “START” is displayed and BEEP sound is
outputted.
5. Press the [MENU] key, return to minor item selection screen.
5-2-9. Sound pressure regulation level check
“1 kHz   0 dBs   L-ch/R-ch VOLUME: 30” audio signal is outputted.
Checking method:
1. Enter the audio test mode.
2. Press the 
 , 
 key to display major item, and press the  M   m
key to select the “AUDIO”.
3. Press the 
 , 
 key to display minor item, and press the  M   m
key to select the “SPL”.
4. Press the 
 Bx 
 key, “START” is displayed and “1 kHz   0 dBs
L-ch/R-ch VOLUME: 30” audio signal is outputted.
5. Press the [MENU] key, return to minor item selection screen.
5-3. Others
5-3-1. LCD NEGA/POSI switch setting
Negative/positive switch of LCD are performed.
Note:
Reboot is required in order to make setting reflect. When perform
“5-3-10. Contrast setting” or “5-3-14. Factory setting” after this
setting, be sure to perform after reboot.
Checking method:
1. Enter the test mode.
2. Press the 
 , 
 key to display major item, and press the  M   m
key to select the “OTHERS”.
3. Press the 
 , 
 key to display minor item, and press the  M   m
key to select the “LCD NP”.
4. Press the 
 Bx 
 key, “POSI” or “NEGA” is displayed. In this
state, each time [MODE]  key is pressed, negative/positive
switch of LCD are performed.
5. Press the [MENU] key, return to minor item selection screen.
5-3-2. G-sensor check
X/Y/Z-axis direction is checked.
Checking method:
1. Enter the test mode.
2. Press the 
 , 
 key to display major item, and press the  M   m
key to select the “OTHERS”.
3. Press the 
 , 
 key to display minor item, and press the  M   m
key to select the “G TEST”.
    AUDIO
LCD display
    DSP 1
LCD display
    START
LCD display
    DSP 2
LCD display
    AUDIO
LCD display
    BEEP
LCD display
    START
LCD display
    AUDIO
LCD display
    SPL
LCD display
    START
LCD display
    START
LCD display
    OTHERS
LCD display
    LCD NP
LCD display
    POSI
LCD display
    OTHERS
LCD display
    G TEST
LCD display
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