SONY DPIF5100 Repair Manual

SECTION 3
SERVICE MODE
3-1. GENERAL*5) Digital input check : Do not use this in repair.
This set has the test mode of the built-in microprocessor which*6) Analog input check : Other than MUTE check, do not use this
allows various check items required repairing.in repair.
*7) Mute mode : Use this in electrical adjustment (see page 8).
3-2. SETTING THE TEST MODE*8)
Press the POWER key and the EFFECT key at the same time and
turn on the power. (Insert the DC plug)
LCRHR LED
3-3. RELEASING THE TEST MODE
Remove the DC plug.
HL LED
LS
3-4. TEST MODERS
1. LED check
LEDs go on in sequence *1)
4. IF test tone
POWER,INPUT keys
POWER and MUSIC LEDs on
All LEDs on *2)
OUTPUT key
POWER,INPUT keys
All LEDs off *3)
L LED on 1 kHz, �10 dBv
OUTPUT key
Go to Key check
C LED on 1 kHz, �30 dBv
*1) In test mode
*2) All infrared LEDs on
OUTPUT key
*3) All infrared LEDs on
R LED on 100 Hz, �30 dBv
2. Key check
Press each key and its correspondingOUTPUT key
LED goes on *4)
RS LED on 10 kHz, �30 dBv
POWER,INPUT keys
OUTPUT key
Go to Audio check
LS LED on 1 kHz, FS
*4) Corresponding LEDs
OUTPUT key
POWER key : POWER LED
INPUT key: ANALOG LED
EFFECT key : MUSIC LED
POWER,INPUT keys
OUTPUT key : VIRTUAL LED
3. Audio check
End of Test mode
POWER, DIGITAL,
L and R LEDs on *5)
POWER,INPUT keys
ANALOG, HR and HL LEDs on *5) *7)
POWER,INPUT keys
HL and HR LEDs off *6)
POWER,INPUT keys
Go to IF test tone
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