Specifications

14
6. The PCB is mounted on 2 mounting posts which will need to be squeezed to remove the pcb.
7. Remove the HEATSINK from the PCB by removing the 2 screws/nuts/washers.
REFITTING:
8. Fit the HEATSINK to the PCB using the 2 screws/nuts adding THERMAL TRANSFER
PASTE underneath component Q6.
9. Fit new PCB to the mounting posts.
10. Insert the 2 PLASTIC RIVETS into the din socket.
11. Insert the 2 screws into the heatsink from the heater compartment.
12. Reconnect the PCB WIRING LOOMS (Observe polarity).
13. Refit the TOP COVER.
Calibration:
1. Set the JEM CALIBRATION BOX to the required mV setting (13.4mV).
2. Make sure the RAMP BUTTON on your CALIBRATION BOX (GREY) is OFF.
3. Remove the TOP COVER.
4. Disconnect the THERMOCOUPLE from the PCB.
5. Connect the RED TERMINAL of the CALIBRATION BOX to the POSITIVE (+)
THERMOCOUPLE connector of the PCB.
6. Connect the BLACK TERMINAL of the CALIBRATION BOX to the NEGATIVE (-)
THERMOCOUPLE connector of the PCB.
7. Turn the machine on and tweak the TEMPERATURE CALIBRATION POT until the RED
(HEATING) LED FLASHES.
8. IF YOU PRESS THE RAMP BUTTON IN THE LED SHOULD GO OUT AND COME BACK
ON AGAIN WHEN YOU RELEASE THE BUTTON.
9. Disconnect the CALIBRATION BOX from the THERMOCOUPLE connectors.
10. Replace the THERMOCOUPLE onto the DMX/PROGRAM PCB (PRE 11/06: YELLOW = +
BLUE = - / POST 11/06: BLACK = + WHITE = -)
11. Turn the machine on and check for current draw.
12. Let the machine heat up and check using a digital volt meter that the RED (HEATING) LED
turns OFF at the correct point.
13. The GREEN (OK) LED should turn on about 1mV lower than the peak temperature setting.
(RED LED TURNING OFF)
14. TEMPERATURE CALIBRATION IS NOW COMPLETE.