11
DP-IF8000
SECTION 4
TEST MODE
1. OVERVIEW
The internal microprocessor in this device has a test mode that can
perform all checks. Items that must be checked during repairs are
stored in this microprocessor.
2. SETTING THE TEST MODE
To call up test mode, turn on the power while holding down the
POWER and INPUT keys. (Connect the AC adapter.)
3. CANCEL THE TEST MODE
Remove the AC adapter.
4. TEST MODE
4-1. LED check
To Key check
LEDs light up in sequence
*
1)
*
1) Test mode setup status
EFFECT key
EFFECT key
All LEDs light up
*
2)
*
2) Infrared LEDs shall light up
All LEDs turn off
*
3)
*
3) Infrared LEDs shall turn off
Power key
4-2. Key Check
*
5) Decode mode LED
POWER key : POWER LED, WINDOW LED
INPUT key : DIGITAL1, DIGITAL2,
EFFECT key : CINEMA1, CINEMA2,
L
C
R
LS
VIRTUAL
CS
RS
HR LED
HL LED
Pressing the INPUT, EFFECT or
OUTPUT key lights up the matching
LED
*
4)
POWER key
5. TEST TONE OUTPUT
DIGITAL1
L, R, HL, HR
LED lights up
DIGITAL2
L, R, HL, HR
LED lights up
ANALOG
L, R, HL, HR
C LED lights up
CINEMA1
L, R, HL, HR
R LED lights up
INPUT key
INPUT key
INPUT key
EFFECT key
POWER key
1kHz, 0dBv L&R ch
*
6)
1kHz, –10dBv L&R ch
*
6)
100Hz, –10dBv L&R ch
*
6)
10kHz, –10dBv L&R ch
*
6)
End test mode
Shift to normal power-on operation
DIGITAL1
L, R, HR LED lights up
DIGITAL1
L, R LED lights up
DIGITAL1
HL, HR LED lights up
L&R ch output
L ch ouput
(R ch MUTE)
R ch output
(L ch MUTE)
*
6) Pressing the OUTPUT key in each test mode changes
the output channels as shown below.
(e.g.) During L&R channel output at 1 kHz and 0dBv.
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