Extra-X, Intra-X – Maintenance – Technical Test Points
Supply Power- 115VAC
May be tested using a volt meter across the hot and neutral on the cord socket which plugs into the machine. There should be 115vac.
Supply Fuses Intra X Only
May be tested with an Ohmmeter across either end of each fuse individually. Continuity across the fuse indicates OK while an open or infinite resistance indicates a blown fuse. The fuses may be accessed by depressing the center tab, and pulling out the drawer just below the main power socket.
Power Switch-115VAC
This may be tested in 2 ways, with or without power. ** (Whenever possible, test an item with power off. When the troubleshooting process requires testing an item with the power on, use EXTREME CAUTION!) Power on- Remove the black and red wires from the backside of the power switch, leaving the blue and brown (line side) in place. With the switch on, there should be 115 VAC across the red and black terminals. Be sure to note the placement of wires and replace them exactly as they came off. Power off- with the machine unplugged, remove all wires from backside of power switch, being careful to take note of wire position with an Ohm Meter. While holding the switch with off the top and on at the bottom, you should read continuity from top to bottom on the left side and on the right side (a side to a side and b side to b side) with the switch in the position. If you do not have continuity in the on position, replace the switch.
Safety Switch- 115VAC
The safety switch should have continuity while depressed between pin #1 & #2 (outside pins) and between pin #3 & #4 (inside pins). With power on 115volts should be read on the board side (red & blue wire) while switch is depressed. (See power at board).
Process Switch
Remove wires from PCB P16 and P17 (start) there should be continuity across these two wires while the process button is depressed and should be open when the bottom is released. If not, replace switch.
Power at board- 115VAC
A voltmeter should read 115VAC between P12 (neutral) and P11(live) when the machine is plugged in with the power on and the safety switch is depressed.(Use Caution when testing live circuits.)
Drive Motor- 115VAC
Power to the drive motor may be tested from PCB pin P9(drive)to blue neutral on terminal strip. 115VAC+. Coil resistance may be tested in three ways:
Intra:
Black (P9 drive) to Red (P18 cap) 4.6 K Ohms
Black (P9 drive) to White (terminal strip) 2.3 K Ohms
Red (P18 cap) to White (terminal strip) 2.3 K Ohms
Note: 2 white wires should stay tied together when testing.
Extra:
Black (P9 drive) to Red (P18 cap) 2.5 K Ohms
Black (P9 drive) to White (terminal strip) 1.25 K Ohms
Red (P18 cap) to White (terminal strip) 1.25 K Ohms
Dryer Fan Motor- 115VAC 24.5 Ohms
Power to the dryer fan motor may be tested from PCB P8 (fan) to the board neutral. 115VAC+. Coil resistance of 24.5 Ohms may be tested across the same points. Be sure to remove the brown wire from P8 before testing resistance to avoid back reading resistance through the PCB.
Dryer Heat Element- 32 Ohms Intra X or 64 Ohms Extra X
Dryer element maybe tested by removing the brown and blue wires from the smaller terminal strip above the dryer fan and checking for 32 Ohms across the blue and brown wires with an Ohm meter ( 64 Ohms from brown to brown on an Extra X ). An open reading may indicate the overload located on the element is open. If the overload is reset and the reading is still open, replace the element. Power to the element maybe tested between PCB P4(dryer) and blue neutral, or between the yellow and blue on the smaller dryer terminal strip. 115VAC.
Developer & Fixer Temperature Sensor
Resistance maybe tested across the developer temperature sensor by removing the wires from PCB P1 & P2 (DEV NTC) or PCB P22& P23 (FIXER NTC) and connecting the wires to an Ohmmeter. Resistances should read as follows noting that the resistance will go down as the temperature goes up and vice versa, and the temp light will flash with resistance is out of range(below 1.4 K Ohms or above 2.8 K Ohms):
Temp-----------------------RES
69*----------------------2.7K Ohms
74*----------------------2.4K Ohms
76*----------------------2.35K Ohms
77*----------------------2.3K Ohms
78*----------------------2.2K Ohms
80*----------------------2.0K Ohms
83*----------------------1.9K Ohms
85*----------------------1.5K Ohms
90*----------------------1.4K Ohms
Developer Heat Element- 115VAC 160 Ohms
Power maybe checked by placing a voltmeter between the blue neutral on the thermal overload and PCB P3 DEV HEATER. 115VAC. Resistance may be checked with an Ohmmeter across the blue neutral on the thermal overload and the orange wire on PCB P3 (DEV HEATER). Remove the wire from the PCB to avoid back reading through the board. Resistance should be 160 Ohms.
Fixer Heat Element- 115 VAC 160 Ohms
Power maybe checked by placing a voltmeter between the blue neutral on the thermal overload and PCB P10(FIXER HEATER). 115VAC. Resistance may be checked with an Ohmmeter across the blue neutral on the thermal overload and the orange wire on PCB P10(FIXER HEATER).Remove the wire from PCB to avoid back reading through the board. Resistance should be 160 Ohms.
Chemistry Heat Element Thermal Overload-
Check resistance directly across thermal overload by removing wires on both sides and making sure red reset button is pushed in. If Ohmmeter does not show continuity, replace overload.
Extra X Only
Replenisher Pump- 115VAC 20 Ohms
Power to replenisher pump may be tested with a voltmeter across PCB (REPLENISH) and blue neutral on terminal strip 115VAC. Resistance across motor coil may be tested with an Ohm meter by removing the wire from PCB P59(REPLENISH) and testing across that wire to the blue neutral on the terminal strip.
Water Solenoid- 115VAC 1.29K Ohms
Power to water solenoid may be tested with a voltmeter across PCB P19 and blue neutral on the terminal strip 115VAC. Coil resistance may be tested with an Ohm meter by removing the brown wire from PCB P19 and measuring from the brown wire to the blue neutral on the terminal strip. 1.29K.
Developer and Fixer Circulation Pumps- 115VAC 370 Ohms
Power to developer and fixer circulation pumps (115VAC) may be tested with a voltmeter across PCB P6 and blue neutral on the terminal strip for the developer circulation pump and PCB P7 and blue neutral on the terminal strip for the fixer circulation pump. Resistance may be tested by removing P6 and measuring across the wire to the board neutral or by doing the same for P7.
Circuit Breakers
To check either circuit breaker, simply remove the wires and check for continuity across the terminals. If there is no continuity, reset the breaker and retest. If they are good, check for power at the main switch ( see power at switch ).
