6
DCA
Intertel
DCA
Intertel
DCA
Intertel
7
DCA
Intertel
4. Block Diagram
3. Design And Operation
3.1 Front View
If the “error light” is flashing, some of the following conditions may exist:
1. The paper chamber is empty
2. The drawer is not properly closed
3. The temperature of the thermal head is more than the limit temperature for printing
3.2 Procedure to Replace Paper Roll
1. Push the “EJECT” button and the drawer will pop out. (Fig. 1)
2. Firmly pull the drawer out and open the lid. (Fig. 2a). Take away a core of paper
3. Place the paper roll the “box”. (Fig. 2b).Make sure a small amount of paper extends
out acting as a lead.
4. Push the drawer back slightly and close the lid until it locks into position. (Fig 3)
5. Push the drawer back into the main housing until it locks with a “click”. (Fig. 4)
Error Lamp (RED)
Eject
Feed (Paper End)
ON/Off Switch
Power Lamp (Green)
Error Power
Feed
On/Off
Eject
Head Up Detector
Power
Relay
Head up
Switch
Voltage
Regulator 1
Paper
Empty
Switch
Power
Voltage
Detector
Paper Empty Detector
Stepping
Motor Driver
Reset
Stepping
Motor
Power
Switch
Power
Switch
Power
Switch
Power
Switch
LED Driver
Paper Feed
Detector
Serial
Interface
Controller
LED
Board
CPU
Expended
1/0
RAM
(32KB)
Host
DC/DC Convertor
ROM
(32KB)
Thermal Head
5V
5V
Vm
Vm
CN1
CN11
CN10
CN9
CN8
CN7
CN6
CN5
CN4
CN2
CN3
Address
Bus
Data Bus
Mainboard. Upper
Mainboard. Lower
DC 10~16V
