Outline Of The Operation; Panel Drive-Power On / Off Function - Pioneer PDP-LX5080D Service Manual

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5.6 OUTLINE OF THE OPERATION

5.6.1 PANEL DRIVE-POWER ON / OFF FUNCTION

A
Function:
It is an operational mode where the digital signal processing performs circuit operation but the power is not supplied to the
panel driving system (Vsus, VAddress) in order to avoid a power down (PD).
Application:
1. When it is necessary to check whether the signal output is correctly reaching the drive system in a repairing activity etc.
2. In the case of a PD, to determine whether the problem is with the panel drive-power supply or with the other system power
supply.
Method:
1. Short-circuit between the specified location of the POWER SUPPLY Unit and GND (Multi base section recommended),
B
using a jumper with alligator clips (refer to the photos below).
2. Execute [DRV S00] by RS-232C command. ([DRV S01] for release)
Supplemental explanation:
• When the panel drive-power is in OFF state, there will be no PD, except PS_PD, as the PD signal has been muted.
• If the clip is removed in the OFF state of the panel drive-power, PD will take place at the instance of clip
removal. Therefore, be sure to remove the clip after turning the power OFF.
• Under RS-232C command control, [DRV S01] (release) is possible during power ON. However, there is a possibility of
damaging the set. Therefore, make this operation only after turning the power OFF.
• The [DRV S00/S01] commands are effective during Standby mode. However, if no operation is performed within about 10
seconds or more, the panel drive-power OFF state will be canceled.
• When the main power switch is set to OFF, no command is accepted.
C
• The panel drive-power OFF state established by the [DRVS00] command will be canceled by unplugging the AC power
cord, setting the main power switch to OFF, or by performing no operation for 10 seconds or more during Standby mode.
When the panel drive-power is ON
D
E
F
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1
2
POWER SUPPLY Unit
DRF-SW-B
(TEST PIN)
Multi base
PDP-LX5080D
2
3
When the panel drive-power is OFF
POWER SUPPLY Unit
DRF-SW-B
(TEST PIN)
GND
3
4
Alligator clip
Multi base
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