Troubleshooting - Sony DVP-F21 Service Manual

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5. Grid check (
This check mode makes it turn on one grid of the arbitrary grids
of fluorescent display at a time. (All anodes of applicable grid are
turned on.) During this check mode, grid of one somewhere
surely lights up. The
is used for movement of grid. However, since there is no
[CLICK SHUTTLE]
it can correspond by the remote commander for DVD with
[CLICK SHUTTLE]
6. Anode check (
This check mode makes it turn on one anode of the arbitrary
anodes of fluorescent display at a time. (Applicable anodes of all
grids are turned on.) If
the check will begin from P1 and will move with P2, P3 .... After
the check of the last anode finishes, it returns to P1. During this
check mode, one anode in all grids surely lights up.
[CLICK SHUTTLE]
The
movement of anode. However, since there is no
[CLICK SHUTTLE]
it can correspond by the remote commander for DVD with
[CLICK SHUTTLE]
7. LED control
[EJECT]
Whenever
repeats on and off.
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http://www.xiaoyu163.com
button: Grid check mode)
[CLICK SHUTTLE]
of remote commander
in remote commander of supplied accessory,
.
button: Anode check mode)
[CLICK SHUTTLE]
is rotated clockwise,
of remote commander is used for
in remote commander of supplied accessory,
.
button is pressed, SUROUND LED (D406)
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8

6-11. TROUBLESHOOTING

1. Cannot Enter Test Mode
You cannot enter the Test mode when either button has been
pressed by any reason with the board assembled in the front
panel.
In this state, the power does not turn on even under normal
condition (the set is kept in standby state), and also no button is
active and the remote commander is not accepted.
2. Power is not Supplied
1 Red LED does not light when AC is supplied (standby)
The power (EVER +5 V) is not supplied.
The X401 does not oscillate.
FTC connecting between FL-123 and MB-99 boards is
faulty.
[POWER]
2 At
Any button has been pressed.
The voltage at PONCHK (30 pin) of the IF CON exceeds 0.1
V.
[POWER]
3 At
red (standby state) after several seconds
The PONCHK (30 pin) of the IF CON is abnormal (slow
rising from 0.1 V to more than 1.5 V, or voltage not rising to
more than 1.5 V).
The SYSTEM CONTROL is faulty.
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3
6 7
1 3
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6-15 E
6-15
2 9
9 4
2 8
button ON, LED is kept in red (standby state)
button ON, LED lights in green but returns to
1 5
0 5
8
2 9
9 4
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9 9
2 8
9 9

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