Sharp VC-MH815HM/LM

34
VC-MH705HM/LM
VC-MH815HM/LM,MH85HM
VC-MH715HM,MH835HM
Power Circuit ADJUSTMENT
ADJUSTMENT OF Output Voltage Confirm
Measuring
instrument
Mode
Fix Load
Power Consumption device
Power off
actual load
Test point AC Plug
Specification 3.0W MAX
Item Test point Specification Fix Load
AT 12V AT between 12Vline~GND DC 12.5V±0.3V 360mA+actual load
AT 5V AT between 5Vline~GND DC 5.25V±0.1V 18mA+actual load
AT 39V AT between 39Vline~GND DC 39.0V±2.0V actual load
AT 25.0V AT between 25.5Vline~GND DC 26.0V±0.5V actual load
Measuring
instrument
Digital Voltmeter
<Setting Condition>
1. Power Supply : AC190V(50Hz)
2. SURROUND temperature Setting : 20ºC±10ºC
3. load connect place : between AT 5V→AC connector
8PIN~AC connector1PIN
(High speed) : between AT25.5V→AC5PIN~AC2PIN
(Other model) : between AT12V→AC5PIN~AC2PIN
ADJUSTMENT OF Over Load Characteristic
Confirmation
Item Test point Specification Fix Load
AT 12V AT between 12Vline~GND Output above 11.0V 2.0~2.2A(over load)
AT 25.0V AT between 25.5Vline~GND Output above 25.0V
Measuring
instrument
Osiloscope
when apply the over load at the AT12V/AT25.5V output for
every 170msec, confirm that the output is 11.0V/25.0V for every
time.
70 100
2.2A
0.65A
(A)
(msec)
ADJUSTMENT OF Power Consumption Con-
firmation
1.Power supply : AC230V(50Hz)
2.Surround Temperature Setting : 20ºC±10ºC
www.freeservicemanuals.info
6/17/2019
Digitized in Heiloo the Netherlands
Not for sale!