Outline Of The Operation - Pioneer PRO-141FD Service Manual

1

5.6 OUTLINE OF THE OPERATION

A
[1] PANEL DRIVE-POWER ON/OFF FUNCTION
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.
B
Method:
1. Short-circuit between the specified location of the POWER SUPPLY Unit and GND (Multi base section recommended),
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.
C
• Command [DRV S00/S01] is effective even during standby.
• Setting with RS-232C commands or the remote control unit is enabled during Standby mode. However, if the unit is left
unoperated for about 10 seconds in Standby mode after setting with RS-232C commands or the remote control unit is
completed, the setting will become void.
• When the main power switch is set to OFF, no command is accepted.
• Setting with RS-232C commands or the remote control unit will become void if the AC power cord is unplugged, the main
power switch is set to OFF, or the unit is left unoperated for about 10 seconds in Standby mode.
When the panel drive-power is ON
D
DRF-SW-B
(TEST PIN)
E
F
82
1
2
POWER SUPPLY Unit
Multi base
PRO-141FD
2
3
When the panel drive-power is OFF
POWER SUPPLY Unit
DRF-SW-B
(TEST PIN)
GND
3
4
Alligator clip
Multi base
4