Sony NWZA816P - DIGITAL MEDIA PLAYER/MP3 PLAYER Service Manual page 14

NW-A805/A806/A808/NWZ-A815/A816/A818
4-2-1. Output check
"1 kHz 0 dBs L-ch/R-ch VOLUME: 25" audio signal is outputted.
Checking method:
1. Enter the test mode.
2. Press the / key to select the "AUDIO", and press the
v V
key to enter the minor item.
3. Press the / key to select the "OUTPUT".
v V
4. Press the key, "1 kHz 0 dBs L-ch/R-ch VOLUME: 25"
u
audio signal is outputted.
liquid crystal display
AUDIO OUTPUT
1kHz 0dBs L/Rch
HPOUT [ VOL: 25 ]
START
5. Press the [BACK] key, return to minor item selection screen.
4-2-2. S/N check
"Infinity Zero VOLUME: 30" audio signal is outputted.
Checking method:
1. Enter the test mode.
2. Press the / key to select the "AUDIO", and press the
v V
key to enter the minor item.
3. Press the / key to select the "SN".
v V
4. Press the key, "Infinity Zero VOLUME: 30" audio signal
u
is outputted.
liquid crystal display
AUDIO SN
Infinity Zero
HPOUT [ VOL: 30 ]
START
5. Press the [BACK] key, return to minor item selection screen.
14
4-2-3. Frequency characteristic 1 check
"20 Hz 0 dBs L-ch/R-ch VOLUME: 25" audio signal is outputted.
Checking method:
1. Enter the test mode.
B
2. Press the /
v V
key to enter the minor item.
3. Press the / key to select the "F1".
v V
4. Press the key, "20 Hz 0 dBs L-ch/R-ch VOLUME: 25"
u
audio signal is outputted.
liquid crystal display
AUDIO F1
20Hz 0dBs L/Rch
HPOUT [ VOL: 25 ]
START
5. Press the [BACK] key, return to minor item selection screen.
4-2-4. Frequency characteristic 2 check
"20 kHz 0 dBs L-ch/R-ch VOLUME: 25" audio signal is outputted.
Checking method:
1. Enter the test mode.
B
2. Press the /
v V
key to enter the minor item.
3. Press the / key to select the "F2".
v V
4. Press the key, "20 kHz 0 dBs L-ch/R-ch VOLUME: 25"
u
audio signal is outputted.
liquid crystal display
AUDIO F2
20kHz 0dBs L/Rch
HPOUT [ VOL: 25 ]
START
5. Press the [BACK] key, return to minor item selection screen.
key to select the "AUDIO", and press the
key to select the "AUDIO", and press the
B
B