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RUNNING POWER SUPPLY IN STAND ALONE CONDITION
All of the following tests must be carried out with the MAINS switched OFF.
Any operations carried out with the MAINS switched ON may lead to components being
destroyed.
With the following configuration it is possible to start the power supply in stand alone function.
- Disconnect mains.
- Remove connector BP005 and BL111.
- Make a connection between pin 18 (PO) of BP005 to GND .
- Connect pin 21 (CNT2_20V) of BP005 to cathode of DP120
(+20V).
- Connect a resistor 12R0/5W between +5V and GND.
- Connect a resistor 18R0/5W between +8V and GND.
- Connect a resistor 4k0/10W between USYS and GND.
ONLY NECESSARY IF NO CRT BOARD CONNECTED
- Connect mains .
- Switch «ON».
- Remove connection between pin 18 (PO) of BP005 and GND.
- Measure the following voltages :
NOTE : Don't forget to remove all additionnal loads, the connection between pin 21 of BP005 and +20V
and reconnect BP005, BL111 after stand alone function.
Voltage
Usyst (C / DP110)
(G/7)*
+20V (C / DP120)
( G/5)*
+10V (C / DP140)
(G/6)*
+8V / (C / DP194)
(H/1)*
+6V (C / DP150)
(F/5)*
+5V (A / DP152)
(H/3)*
+UA (C / DP130)
(F/9)*
-UA ( A / DP135
(J/8)*
(*)
Components location reference
Value
185V +/-10V
25.5V =/- 1V
11.5V +/-0.6V
8.15V +/-0.25V
6.1V +/-0.2V
5.1V +/-0.15V
22V +/2V
-20V+/-2V
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