1The printer does not work normally after being turned on.
• Is
•No
message shown in the LCD display (for less than 1 second)?
Is the AC cable connected properly?
• No Connect the cable properly.
▼
• No Is the message (16 columns ■ display only on the top row ) shown in the LCD display?
• Yes Replace the Main board.
▼
• No Are the following voltages applied to the corresponding pins of the POWER connector on the Main board? (For the measuring points, see Figure
Pin 23:
Pins
• No Remove the AC cable. Set the POW switch to the ON position. | |
Measure the resistance between L and N pins of the AC inlet using a | |
multimeter. Is there continuity between L and N pins (normal resis- | |
tance: 554 kΩ)? (For measuring points, see Figure | |
• No | Replace the fuse F2 or the Power Supply Unit (AC120V or |
| 230V) |
▼
• Yes Are POWER connector of the Main board and Connection
Are connection
Unit (AC120V or 230V) connected properly?
• No | Connect the connectors properly. |
▼
• Yes Are the following voltages applied to CN3 connector of the Power Supply Unit (AC120V or 230V)? (For measuring points, see Figure 6- 3.)
Pins 19, 20: +30V, Pins
Pin 23:
|
| • | No | Replace the Power Supply Unit (AC120V or 230V). |
▼ |
|
|
|
|
• | Yes | Replace the Connection | ||
▼ |
|
|
|
|
• Is the printer recovered? | ||||
|
| • | No | Replace the Main board |
▼ | YES | END |
| |
• |
|
40930701TH DRAFT Vesion | 134 / |