Sony DVP-NC625 Service Manual page 96

2-3. Each Self Check Function
Each Self Check function tests the FLD display, LED display, and
key input.
Input
Voltage [V]
(AD1)
Pin ef
0 – 0.21 PLAY
0.63 – 0.86 PAUSE
1.23 – 1.55 STOP
1.9 – 2.25 PREV
2.63 – 2.86 NEXT
5.0 –
Vref = 3.5V
2-3-1. FLD and LED All ON
2-3-1-1.Transition Keys in Self Check Mode
• [STOP] key and [OPEN/CLOSE] key on the main unit
• [LEFT] key on the main unit and the remote commander
2-3-1-2. Operation and Display
In this mode, all LEDs except STANDBY LED and all segments
of FLD turn ON.
Example of FLD all ON
DVD
VCD
MP3
ALL DISCS
2-3-2. Main Unit Key Name Display and Key Code Display
2-3-2-1. Transition Keys in Self Check Mode
• Keys on main unit except keys transited in self check
2-3-2-2. Operation and Display
When a key on the main unit is pressed in the Self Check mode,
the name of that key is displayed on the FLD. Also, the key name
display and the key code display can be switched with the
[DISPLAY] key on the remote commander. "NOTHING" is dis-
played when nothing is entered. Also, VCD, DVD, and CD seg-
ments turn on when a communication error occurred.
FLD display (at input of [PLAY] key on the main unit)
DVD
VCD
MP3
ALL DISCS
IC404: Pin No. (Signal)
(AD2) (AD3)
Pin eg Pin eh
OPEN/CLOSE POWER
EXCHANGE DISC 5
DISC SKIP DISC 4
PROG SEL* DISC 3
– DISC 2
– –
6-14
(AD4)
Pin ej
LOAD
1/ALL
PREQ
TVS
DISC 1
–
* : NC665P only