Sony RMT-144A Servise Manual page 92

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2-3. Each Self Check Function
Each Self Check function tests the FLD display, LED display, and
key input.
Input
Voltage [V]
(AD1)
Pin ea
0 – 0.2 ENTER
0.6 – 0.82 DOWN
1.16 – 1.47 LEFT
1.8 – 2.12 UP
2.48 – 2.7 RIGHT
5.0 –
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
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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)
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http://www.xiaoyu163.com
(AD2)
Pin es Pin ef
TOP MENU * PLAY
MENU * PAUSE
RETURN * PREV
DISPLAY * NEXT
– –
– –
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http://www.xiaoyu163.com
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8
IC404: Pin No. (Signal)
(AD4) (AD5)
Pin eg
OPEN/CLOSE
EXCHANGE
DISC SKIP
–
–
–
Q Q
3 6 7 1 3
.
9 4 2 8
(AD6) (AD7)
Pin eh Pin ej
POWER LOAD
DISC 5 1/ALL *
DISC 4 PREQ
DISC 3 TVS
DISC 2 DISC 1
– –
* : NC655P only
1 5 0 5 8 2 9 9 4
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9 9
2 8 9 9