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TEST 1 (OLED EF Series) Power Supply Board 12V/24V to Main Voltage Check
AC Should not be applied at any time while adding jumpers or While
unplugging connectors, damage to the circuit Board may occur.
unplugging connectors, damage to the circuit Board may occur.
I) When AC is applied, the SMPS "MUST" be producing
STBY 3.5V (3.52V) on pins 5 and 7, 8 of P201.
If 3.5V Standby is not being generated, the SMPS is defective
If 3 5V Standby is not being generated the SMPS is defective
and may need to be replaced. Make sure AC is arriving at the connector SK100
and +3.5V_ST is not loaded down by the Main Board or the Joy Stick/IR Board.
Remove connector on Main board. If STBY is still missing, SMPS is defective.
II) Unplug P2399 on the Main Board to make insertion of the Jumpers easier.
II) Unplug P2399 on the Main Board to make insertion of the Jumpers easier
Use P2399 side to insert jumpers.
TEST 1: TESTING THE POWER SUPPLY TURN-ON CIRCUIT. (See Fig 1)
(1) Add a jumper (A) between (3 5V STBY) pin 5 and (PWR ON) Pin 1
(1) Add a jumper (A) between (3.5V STBY) pin 5 and (PWR_ON) Pin 1,
(See Fig 1). Apply AC, this will turn on the SMPS. Relay click will be heard.
Check that the 24V and 12V power supplies to the Main board are turned on,
To Main Board Power:
• P201 (11.96V pins 11-15)
• P201 (23.70V pins 19-22)
• P201 (23 70V pins 19 22)
(2) Remove AC power
See Next page to Test the Power Supply's T CON 12V line
See Next page to Test the Power Supply s T-CON 12V line.
TIP: If you are concerned that you may accidently connect the jumpers in the incorrect locations,
please use a 100 ohm 1/8W resistor instead.
No 12V or 24V to T-CON at this time.
3
P201
SMPS TEST 1
Top Row pins
Top Row pins
23 24
are Odd numbers
21 22
24V
24V
19 20
24V
24V
17 18
17 18
12V_ON
12V ON
15 16
12V
13 14
12V
12V
11 12
12V
12V
9
10
7
8
STBY 3.5V
STBY 3.5V
STBY 3.5V
5
6
Gnd
A
3
4
1
2
PWR_ON
Pin 1 is Bottom on SMPS
Pin 1 is Top on Main
Fig 1
DRV_ON
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