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40930701TH DRAFT Vesion 149 /
From on the preceding page
A
.
From on the preceding page
B
.
• Yes Replace the fuser unit.
▼
• Is the printer recovered?
• No Replace the Main board.
▼
• YES END.
▼
• No Is the heater or thermistor open?
Measure the resistance between the thermistor contacts, and between heater
contacts (normal resistance: 220 kΩ (25°C) between pins 1 and 2, 1.5 Ω (120 V)
and 5.8 Ω (240 V) between pins 3 and 4) (See Chapter 7.3.)
• Yes Replace the fuser unit.
▼
• No Is the AC voltage applied to the CN2 connector on the Power Supply Unit
(AC120V or 230V)? (See Figure 6-3)
• No Is CN2 connector connected to the Power Supply Unit (AC120V or 230V)?
• No Connect the CN2 connector to the Power Supply Unit (AC120V or
230V) properly.
▼
• Yes Is Pin 6 (HEAT ON signal) of the POWER connector of the Main board turned
on? (In heater on state, this pin is set to 0 V).
• No Replace the Main board.
▼
• Yes Replace the Power Supply Unit (High Voltage).
▼
• YES Go to
B
.