Test Mode - Philips DP-IF8000 Service Manual

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
LEDs light up in sequence *1)
All LEDs light up *2)
All LEDs turn off *3)
To Key check
*1) Test mode setup status
*2) Infrared LEDs shall light up
*3) Infrared LEDs shall turn off
4-2. Key Check
Pressing the INPUT, EFFECT or
OUTPUT key lights up the matching
LED *4)
To test tone output
*4) Matching LED
POWER key : POWER LED, WINDOW LED
INPUT key : DIGITAL1, DIGITAL2,
ANAGOG LED
EFFECT key : CINEMA1, CINEMA2,
MUSIC LED
OUTPUT key : DECODE MODE LED
*5) Decode mode LED
C
L
LS CS
VIRTUAL
SECTION 4
TEST MODE
EFFECT key
EFFECT key
Power key
POWER key
R
HR LED
HL LED
RS
5. TEST TONE OUTPUT
DIGITAL1
L, R, HL, HR
LED lights up
INPUT key
DIGITAL2
L, R, HL, HR
LED lights up
INPUT key
ANALOG
L, R, HL, HR
C LED lights up
EFFECT key
CINEMA1
L, R, HL, HR
R LED lights up
POWER key
INPUT key
End test mode
Shift to normal power-on operation
*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.
DIGITAL1
L, R, HR LED lights up
DIGITAL1
L, R LED lights up
DIGITAL1
HL, HR LED lights up
DP-IF8000
1kHz, 0dBv L&R ch
*6)
1kHz, –10dBv L&R ch
*6)
100Hz, –10dBv L&R ch
*6)
10kHz, –10dBv L&R ch
*6)
L&R ch output
L ch ouput
(R ch MUTE)
R ch output
(L ch MUTE)
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