Test Mode - Sony DP-IF8000 Service Manual

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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)
*1) Test mode setup status
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*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)
*4) Matching LED
POWER key : POWER LED, WINDOW LED
INPUT key : DIGITAL1, DIGITAL2,
EFFECT key : CINEMA1, CINEMA2,
OUTPUT key : DECODE MODE LED
*5) Decode mode LED
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EFFECT key
EFFECT key
Power key
To Key check
POWER key
To test tone output
ANAGOG LED
MUSIC LED
C
R
HR LED
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HL LED
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SECTION 4
TEST MODE
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5. TEST TONE OUTPUT
C LED lights up
R LED lights up
INPUT key
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3 6 7 1 3
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.
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2 9 9 4 2 8
DIGITAL1
1kHz, 0dBv L&R ch
L, R, HL, HR
*6)
LED lights up
INPUT key
DIGITAL2
L, R, HL, HR
1kHz, –10dBv L&R ch
LED lights up
*6)
INPUT key
ANALOG
L, R, HL, HR
100Hz, –10dBv L&R ch
*6)
EFFECT key
CINEMA1
L, R, HL, HR
10kHz, –10dBv L&R ch
*6)
POWER key
1 5 0 5 8 2 9 9 4
End test mode
DIGITAL1
L&R ch output
L, R, HR LED lights up
DIGITAL1
L ch ouput
L, R LED lights up
(R ch MUTE)
DIGITAL1
R ch output
HL, HR LED lights up
(L ch MUTE)
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DP-IF8000
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2 8 9 9
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