【
CAUTIONARY NOTES
】
Prior to doing any repair work, please check the items listed below.
Is the power supply voltage is normal?
Is the polarity (
+
,
−
) of a power supply correct?
Have any fuses blown out?
All the connectors wired correctly?
Securely tighten all connections.
Check to see if the connectors to individual boards are connected.
Check to see if the cable broke.
Check to see if there is any disordered appearance.
When conducting repair work, care should be taken as follows.
Make sure to turn the main power off before repair work and remove the power cable.
Due to the high voltage in the inverter unit, it is very dangerous to touch the peripheral lines.
C-MOS
・
ICs are on the boards. To avoid the damage by static electricity, do not wrap the board
in any material that causes static electricity or do not use leaky soldering irons.
Do not place the board on a metal board since the battery is mounted on the board or some
electric charge might remain on the condenser.
The following cases void its warranty and the high repair charge will be required.
<Changing the chip parts>
<Soldering on the board>
<Abnormal adjustment on the variable resistors>
-4-
Summary of Contents for S-1800H80/180
Page 44: ...N o 6 8 8 A...
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Page 50: ...NO 748 H SYNC CH1 J15 3pin GND V SYNC CH2 J15 4pin GND...
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Page 55: ...NO 654 FRQ CH1 FRQ GND P...
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Page 70: ...180kHz HULL UNIT CIRCUIT DIAGRAM WAVE FORMS 180 kHz...
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Page 81: ...70V...
Page 83: ...NO 703 CH1 FRQ GND P...
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Page 119: ...HULL UNIT ASSEMBLY DRAWING...