Power On/Off Function For The Large Power Signal System - Pioneer PDP-425CMX Service Manual

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7.1.4 POWER ON/OFF FUNCTION FOR THE LARGE POWER SIGNAL SYSTEM

POWER ON/OFF FUNCTION FOR THE LARGE POWER SIGNAL SYSTEM
Function : To prevent a power-down from being generated, operation of only the digital-signal processing is enabled, and
power is not supplied to the panel driving system (large power signal system).
Usages : 1. In a case where a check is required of signals' being correctly output to the driving systems during a repair, etc.
2. In a case where diagnosis is required for judging whether the power to the large power signal system or small-
signal system has been down when a power-down occurred
Methods : Switch off the large power signal system swtich S3601 (downward) on the MD DIGITAL Assy.
Notes : • When the power to the large power signal system is off, as the PD signal is muted, power-downs other than PS_PD are
not activated.
• As soon as the switch turned on while the power to the large power signal system is off, a power-down will occur.
Be sure to turn the power off before switching on.
MD DIGITAL ASSY
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6
PDP-425CMX
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7
S3601
Up : Large power ON (Default)
Down : Large power OFF
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A
B
C
D
E
F
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