Oki B4350 - Page 60

42641101TH Rev.1 60 /
Oki Data CONFIDENTIAL
1 The printer does not work normally after the power is turned on.
• Turn the power off, then back on.
• Is all black message being displayed by the LCD display?
• No Is the AC cord being connected properly?
• No Connect the AC cord properly.
• Yes Is +5 V being applied between Pins 3 and 1 of PW_2 connector on the main control
board?
Pin 1 : 0 V
Pin 3 : +5 V
• No Is the connection between PW_1/PW_2 connector on the main control board
and connector CN2 on the power supply board board being made properly?
No Correct the connection.
• Yes Replace the power supply board.
• Yes Is +3.3 V being applied between Pins 5 (GND) and 8 of IC13?
Pin 5 :0 V
Pin 8 :+3.3 V
• No Replace the main control board.
• Yes Is the flexible cable for the operator panel assy being connected to the LCDPNL
connector on the main control board and the connector CN on the OPE board properly?
• No Connect the flexible cable properly.
• Yes Replace the operator panel assy or flexible cable.
• Has the problem been solved?
• No Replace the main control board.
• Yes End
• Yes Is message being displayed by the LCD display?
• No Replace the main control board.
• Yes Is message being displayed by the LCD display?
XXX: PCL, AUTO, PSE*, HEX DUMP, PPR, FX
* PSE means Postscript 3 Emulation.
• No Take actions according to the LCD status message/problem list (see Section
5.5.1 for corrective actions).
• Yes End
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