PACE MBT-210E (02) PDF MANUAL

PACE MBT-210E (02) PDF SUMMARY:

What does the PACE MBT-210/E unit feature?

The PACE MBT-210 and 210E feature a quick-recovery, closed loop temperature control with LED readout of Set and Operating temperatures and a quick start vacuum system. The “SR-3” “Safety Rated” designation on the front panel assures the user that the MBT-210/E meets or exceeds all applicable DOD-2000 and WS6536 specifications as well as other PACE standards for high quality repair.

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What specifications and standards does the PACE MBT-210/E meet or exceed?

• Temperature Control: Closed loop with 3 digit LED display of set and operating temperatures (°F or °C).
• Idle Tip Temperature Stability: Within ± 10°F ( ± 5.5°C) of set point independent of line voltage fluctuations.
• AC Leakage: Less than 2 mV rms.
• Tip-to-ground Impedance: Less than 2 ohms (Tip to AC power cord ground pin).
• Transient Levels: Less than 500 mV peak, out to 100 MHz. All zero power switching used.
• Static Control: All metal chassis with earth ground terminal and static dissipative handpiece.
• Desoldering/Soldering Tool Holders: Tool holders are non-heat sinking, protect personnel from burns and do not apply excess mechanical stress on handpieces.

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What are the power requirements for the MBT-210 and MBT-210E?

• MBT-210 (Domestic version): Operates on 100-115 VAC, 50/60 Hz, 150W, 1.3 amp maximum.
• MBT-210E (Export version): Operates on 220-240 VAC, 50 Hz, 150W, 0.65 amp maximum.

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What are the handpiece tip temperature settings for the MBT-210 and MBT-210E?

Settings are 600°F (316°C) nominal, min. – 900°F (482°C) nominal, max.

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What does the display indicate on the MBT-210 and MBT-210E?

The display indicates Set and Operating Temperatures (°F or °C) for Soldering Iron and Extractor, with one degree of resolution.

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What are the parts identified on the MBT-210/210E systems?

• VARIABLE TEMPERATURE CONTROL (EXTR) – Provides variable temperature control for the Extractor Handpiece Tip temperature.
• VARIABLE TEMPERATURE CONTROL (IRON) – Provides variable temperature control for the Soldering Iron Tip temperature.
• MAIN POWER SWITCH – Controls input power within MBT System.
• PRESSURE CONTROL – Air control for hot-air jet mode.
• VACUUM FITTING – Vacuum flow for solder removal.
• OUTPUT POWER RECEPTACLE (EXTR) – Connects power from MBT System to the Extractor Handpiece.
• OUTPUT POWER RECEPTACLE (IRON) – Connects power from MBT System to the Soldering Iron Handpiece.
• VISIFILTER® – Collects and prevents foreign matter from entering the Motor Pump.
• EXTRACTOR HANDPIECE – Tool used for solder extraction, and hot-air jet mode (reflows solder connections and shrinks tubing).
• VACUUM CONTROL SWITCH – Extractor Handpiece “ON/OFF” switch activates Motor Pump.
• EXTRACTOR TIP – Heats and extracts solder from joints.
• HEATER ASSEMBLY – Provides heat to Extractor Tip.
• HOT CUBBY – Conveniently stores Extractor and Soldering Iron Handpieces.
• EARTH GROUND TERMINAL – Provides a ground between the MBT System and PCB, thus preventing static charge from damaging sensitive components.
• AC POWER RECEPTACLE – Provides AC power to MBT System from AC outlet through Power Cord.
• POWER CORD – Provides main power from AC outlet to AC Power Receptacle.
• LINE FUSE (F1) – Provides overload protection for MBT System.
• SOLDERING IRON HANDPIECE – Tool used for soldering functions.
• TEMPERATURE DISPLAY – Provides a three (3) digit readout of the Extractor/Soldering Iron Tip temperature.
• DISPLAY SWITCH – Selects Extractor or Soldering Iron Tip temperature for Temperature Display.
• SET TEMPERATURE BUTTONS – When depressed, display set idling/operating temperature of the Extractor or Soldering Iron to adjust for desired operating temperature.
• °C/°F SWITCH – Selects Centigrade or Fahrenheit readout on Temperature Display.
• FOOT PEDAL RECEPTACLE – An input for optional Foot Pedal actuation of vacuum.

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What information is included in the “MBT-210/E REPAIR” section of the manual?

The “MBT-210/E REPAIR” section provides the technician with the information necessary to determine the source and take the necessary steps to correct the malfunction of a unit. This REPAIR section and the following technical documentation sections are broken down into the following segments:

1. SERVICE HINTS – Gives helpful servicing hints for facilitating repair.
2. CORRECTIVE MAINTENANCE – A guide for resolving malfunctions caused by improper maintenance or handpiece failure.
3. TROUBLESHOOTING FLOW CHARTS – Easy to follow charts which enable the technician to determine the source of a malfunction down to an assembly (e.g. Main PC Assembly) level.
4. DISASSEMBLY/REASSEMBLY – Enables the technician to disassemble and reassemble the unit properly.
5. HANDPIECE MAINTENANCE – Enables the technician to properly replace defective heater assemblies on both the Extractor and Soldering Iron.
6. SCHEMATICS – Contains electronics schematics, wiring diagrams and line drawings.

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What steps should a technician follow to achieve the most expedient repair of the MBT-210/E unit?

1. Read the Service Hints which give information on operation and troubleshooting.
2. Locate the “SYMPTOM” in the CORRECTIVE MAINTENANCE segment which best describes the malfunction of the failed MBT-210/E unit. Check each point described under “SOLUTION” in order of listing.
3. If the malfunction has not been corrected at this point, locate the “TROUBLESHOOTING FLOW CHART” which best describes the malfunction of the failed MBT-210/E unit.
4. If the cause for the malfunction has not been determined at this point, call PACE CUSTOMER SERVICE for assistance.

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What are some service hints for vacuum failures?

Failures of this nature are caused by failures of either the unit or Extractor handpiece. Remove the vacuum hose from the unit vacuum port and check for vacuum at the port. If sufficient vacuum is present, the malfunction exists in the handpiece. Further, if vacuum is sufficient at the vacuum port, check vacuum level at the end of the glass solder collection chamber (chamber must be checked cold).

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How are poor solder extraction issues generally resolved?

These types of failures are generally resolved using the Corrective Maintenance guide.

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What can cause heating, display, and motor malfunctions?

These malfunctions can be caused by defective handpiece receptacle connections. Visually inspect the receptacle pins. If any of the metal pins are pushed back in the receptacles, the receptacle in question must be repaired or replaced. Receptacles, pins and wiring harness are listed in the parts section located on Table 4, page 34. Replace these parts by disassembling the unit through level 1 (page 14) and using the front panel illustration shown on page 17.

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What tools should be used when replacing receptacle connector pins?

1. AMP PIN REMOVER #91136-1
2. AMP crimping tool #90363-1-E

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How should heating control circuits be checked?

Heating control circuits must be checked under load (with bandpieces plugged in). The outputs are obtained by switching triacs on and off. The voltage level to the handpiece does not change when adjusting the Heat Control Knobs. Temperature level is achieved by varying the number of “on” cycles that voltage is applied as opposed to the number of cycles “off”. The control circuit of the unit varies the duty cycle of voltage application as required to achieve and maintain the set temperature of the handpiece.

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What usually causes heating failures (no heat)?

Heating failures are usually caused by defective handpiece heaters. Use the guide shown on Table 3, page 20 to test the handpiece.

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What may cause motor activation problems?

Motor activation problems may be caused by a defective handpiece switch or receptacle connection. Plug the Extractor into the auxiliary foot control receptacle located on the rear of the unit. If the motor pump can be activated at that point, check the handpiece output receptacles. If the pump will not activate, check the handpiece switch using the guide listed on Table 3, page 20.

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What may cause display problems?

Display problems may be caused by either handpiece or unit failures. Check handpiece using Table 3, page 20. If no display is present on the unit, plug one of the calibration assemblies (if available), into the unit. If the display turns on, a handpiece failure has occurred.

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What should be done before performing troubleshooting procedures?

Refer to the Corrective Maintenance Section, page 8, for resolution of system malfunction before performing this procedure. Ensure that both Extractor and Soldering Iron have been checked using Figure 10, page 20.

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What should you do if corrective maintenance does not clear a malfunction?

If corrective maintenance does not clear the malfunction refer to the troubleshooting guides shown on pages 10 through 13.

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What are the possible causes and solutions for poor solder extraction?

SYMPTOM	POSSIBLE CAUSE	SOLUTION
POOR SOLDER EXTRACTION-The operator notices that solder joints are not being completely removed	Restrictions or leaks	1. Check to insure that glass chamber is properly seated against the front seal. 2. Glass chamber filter clogged. Replace if necessary. 3. Replace tip. 4. Check “S” baffle for proper positioning. 5. Check for damaged or kinked vacuum hose. Replace if necessary. 6. Replace Visifilter if discolored.
	Clogged tip	Replace tip.
	Broken visifilter	Replace Visifilter.
	Improper visifilter or hose connections	Fit connection properly.
	Hole, kink or obstruction in line	Replace or unkink hose. If the Extractor hose is not the problem, disassemble the unit thru Level 1 and check internal hoses and internal motor filter.

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What are the possible causes and solutions for no power to the unit?

SYMPTOM	POSSIBLE CAUSE	SOLUTION
NO POWER TO UNIT	Blown Fuse	Replace Fuse. Check for shorted Soldering Iron or Extractor heater.
	Broken Power Cord	Replace Power Cord.

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What are the possible causes and solutions for no vacuum when the heating function is normal and the motor operates?

SYMPTOM	POSSIBLE CAUSE	SOLUTION
NO VACUUM-Heating function normal. Motor operates	Clogged glass chamber	Clean chamber and replace filter.
	Clogged tip	Replace tip.
	Broken visifilter	Replace Visifilter.
	Improper connections	Fit connection properly.
	Hole, kink or obstruction in line	Replace or unkink hose. Check internal hoses and internal motor filter.

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What are the possible causes and solutions for no vacuum when the heating function is normal, but the motor does not operate?

SYMPTOM	POSSIBLE CAUSE	SOLUTION
NO VACUUM-Heating function normal. Motor does not operate	Extractor not plugged into “EXTR” receptacle	Plug extractor in "EXTR’’. Motor will not run in IRON receptacle.
	Control circuit inoperative	Plug Extractor into foot control receptacle. If motor does not run, refer to page 12 “Troubleshooting/ Motor Malfunction”.
	Dirty Extractor Switch	Clean switch. Refer to figure 12 page 22.
	Defective Cord and Switch Assembly	Replace. Refer to figure 12 page 22.

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What are the possible causes and solutions if the Extractor heater does not heat?

SYMPTOM	POSSIBLE CAUSE	SOLUTION
EXTR ACTOR Heater does not heat	Handpiece Shell screws loose	Tighten screws. Refer to figure 12 page 22.
	Defective heater	Refer to Table 3, page 20.
	Defective Control Circuit	Refer to "Heat Output Troubleshooting’’, page 10.

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What are the possible causes and solutions if the Soldering Iron does not heat?

SYMPTOM	POSSIBLE CAUSE	SOLUTION
SOLDERING IRON No heat	Defective heater	Refer to Table 3, page 20.
	Defective Control circuit	Refer to “Heat Output Troubleshooting,” page 10.

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What are the possible causes and solutions for no temperature display?

SYMPTOM	POSSIBLE CAUSE	SOLUTION
NO TEMPERATURE DISPLAY-	Handpiece unplugged/ improperly installed	Plug handpiece into Heat Control Receptacle.
	Sensor in Handpiece defective	Check sensor in both handpieces. Refer to Table 3, page 20.
	Defective Control circuit	Refer to “Heat Output Troubleshooting”, page 10.

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What steps are involved in disassembling the MBT-210/E unit for servicing?

To disassemble the MBT-210/E unit for servicing, perform the following procedure step by step, in sequence using the exploded illustrations on pages 36-37, as a guide. The procedure is separated into “Levels” of repair to assist the technician in determining the extent of disassembly required for repair of the unit malfunction. Do not disassemble the unit any further than required for repair.

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What are the steps for LEVEL 1-FRONT PANEL ASSEMBLY REMOVAL?

1. Place the unit on a suitable work surface.
2. Using a flat blade screwdriver, remove the 10 Front Panel mounting screws.
3. Pull the Front Panel forward 3 inches.

To remove front panel for part replacement only

1. Locate the Power Switch on the Front Panel. The four (4) wires attached to the switch run to a white five pin plug which is connected to the Main PC Board. Disconnect the white plug from the PC board.
2. Locate the two (2) clear plastic hoses which are attached to the Front Cover. Note the routing of the plastic hoses. It is extremely important for these hoses to be placed in the same position when reassembling the unit to insure proper vacuum and pressure levels. Disconnect the two hoses.
3. Disconnect the flat ribbon cable from the Main PC Board.
4. Disconnect the red ten (10) pin plug from the Main PC Board.
5. Set the Front Panel assembly aside.

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What are the steps for LEVEL 2-REAR PANEL ASSEMBLY REMOVAL?

1. Reposition the unit with the rear of the unit facing forward.
2. Using a flat blade screwdriver, remove the hex head screw and the eight (8) Rear Panel mounting screws.
3. Pull the Rear Panel forward 2 inches and lay face down on the work surface.

To remove rear panel for part replacement only:

1. The wiring from the auxiliary foot control receptacle runs to a red three (3) pin plug which connects to the Main PC Board. Disconnect this plug from the Main PC Board.
2. Disconnect the white and the white/black wires from the Power Entry Module.
3. Set the Rear Panel assembly aside.

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What are the steps for LEVEL 3-MAIN PC BOARD REMOVAL?

1. Remove the Main PC Board by carefully sliding it out through the front of the unit. Insure that the clear plastic hoses are held down and prevented from interfering with the tall components on the PC board.
2. Set the Main PC Board aside.

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What are the steps for LEVEL 4-MOTOR PUMP/TRANSFORMER ASSEMBLY REMOVAL?

1. There are four (4) mounting screws with locking nuts which secure the Motor Pump/Transformer assembly to the chassis. Two are located on the front base of the unit and two are located on the rear base. Loosen each of the four locking nuts. Slide the nuts and screws out of the unit.
2. Slide the Motor Pump/Transformer assembly out of the chassis.

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What are the steps for LEVEL 5-REASSEMBLY?

1. Reassemble the assemblies removed in reverse order of the disassembly procedure. Insure that the following precautions are taken in the process.
   • When reinstalling the Motor Pump/Transformer assembly, insure that the assembly plate edge is positioned flush with the rear of the chassis.
   • When reconnecting plugs make certain that they are aligned and oriented properly (refer to figure 6, page 16).
   • Insure that when reattaching the two wires to the Power Entry Module the white wire is connected to the terminal marked “N” and the white/black wire is connected to the terminal marked “L”.
   • When reinstalling the Front Panel assembly, insure that the two plastic hoses are attached to the proper fittings and do not kink when the Front Panel is screwed down to the chassis. Refer to figure 6, page 16.

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What steps should be taken for replacement of jammed or broken extractor tips?

1. Disconnect Extractor Handpiece Power Cord and Vacuum Hose from Micro Bench Top System.

2. Remove the End Cap Assembly and Glass Chamber.

3. Using Tip Tool, loosen the Heater set screw (1/4 turn). (Refer to Figure 8).

4. While holding Extractor, insert a steel rod (slightly less than 1/8" diameter) into rear of Handpiece through the Heater Assembly to ram broken Tip from Heater Tube (refer to Figure 9). (NOTE: The Heater should be “HOT” for ease of removal).

   Be careful not to touch the “HOT” Heater Assembly while removing the Tip. Never hold Extractor above eye level for inspection of clogged Tip.

5. Using Tip Tool, insert new Tip into Heater Assembly. (NOTE: Tip should protrude approximately 3/8" beyond the Heater body).

6. Tighten set screw with Tip Tool. (NOTE: Be careful not to overtighten).

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How do you determine the condition of your Extractor and/or Soldering Iron assembly?

Use Table 3 and Figure 10 to determine the condition of your Extractor and/or Soldering Iron assembly. Unplug the Handpieces from the Power Source. Use a voltmeter to check resistance across the Handpiece connector plug pins as outlined in the “Checkout Procedure” column.

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Table 3. HEATER ASSEMBLY CHECKOUT PROCEDURES

SYMPTOM	CHECKOUT PROCEDURE	CAUSE	SOLUTION
No heat or temperature, Display does not change	Check resistance-Pin 2 to Pin 5. Resistance should be 12 ohms. If not	Open Heater	Replace Heater assembly.
No heat or temperature, Display is blank	Check resistance-Pin 3 to Pin 6. Resistance should be 110 ohms. If not-	Open sensor	Replace Heater assembly.
Heater full on, temperature does not work. Temperature Display does not change	Check resistance-Pin 3 to Pin 6. Resistance should be 110 ohms at room temperature. If resistance is low –	Shorted sensor	Replace Heater assembly.
Fuse blows when unit is turned on	Check resistance-Pin 2 to Pin 5. Resistance should be 12 ohms. If not	Shorted Heater	Replace Heater assembly.
Motor does not run	Check resistance-Pin 1 to Pin 4 with switch closed. Resistance should be less than 500 ohms with switch activated. If not	Dirty or defective switch	Disassemble using page 23 and figure 12 as a guide. Clean switch. Replace cord and switch assembly if necessary.

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What are the steps for Extractor Heater Replacement?

When replacement of the Extractor Heater becomes necessary (refer to Table 3. Heater Assembly checkout), proceed with the following steps:

1. Disconnect Extractor Handpiece Power Cord and Vacuum Hose from MBT System.
2. Remove End Cap Assembly and Glass Chamber (refer to Figure 6).
3. Remove three (3) screws on the Heater Assembly flange (refer to Figure 11), let Heater Assembly hang loose. (NOTE: DO NOT pull Heater Assembly from Handpiece at this time).
4. Using Tip Tool or needle nose pliers, disconnect the five (5) leads plugged into the Cord and Switch Assembly (refer to Figure 6). Remove defective heater Assembly from Handpiece.
5. Using Tip Tool or needle nose pliers, carefully plug the three (3) color coded leads of the new Heater Assembly into the color coded receptacles of the Vacuum Control Switch board.
6. Plug “tan” leads into the remaining receptacles of the Vacuum Control Switch board.
7. Attach Heater Assembly to Handpiece using the previously removed screws. (NOTE: Make certain that the five (5) leads are against the Extractor Handpiece sides and out of the way. Visually inspect through Extractor Handpiece ports).
8. Replace Glass Chamber, sliding along the bottom inside edge of the Extractor Handpiece ramps. Ramps will align the Glass Chamber with the front seal and properly seat in place.

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What steps are involved in Extractor Disassembly?

If a problem occurs with the Extractor Handpiece, tighten the Handpiece screws. If the problem is still present, perform the following procedures for cleaning and/or removal/replacement of the Cord and Switch Assembly (refer to Figure 12).

1. Disconnect the Extractor Handpiece Power Cord from Power Source.

2. Remove the End Cap Assembly and Glass Chamber from Extractor Handpiece.

3. Remove the three (3) Heater Mounting Screws from Extractor Handpiece. (NOTE: DO NOT pull Heater Assembly from the Handpiece at this time).

4. Using Tip Tool or Needle Nose Pliers, disconnect the five (5) leads plugged into the PC Board of the Cord and Switch Assembly.

5. Remove the Heater Assembly at this time.

6. Remove the three (3) Heat Dissipater Mounting Screws from Handpiece.

7. Set Heat Dissipater and Heat Dissipater Washer aside at this time.

8. Remove C-Clips from rear of Handpiece.

9. Remove two (2) Handpiece Mounting Screws from Handpiece.

10. Remove Lower Handpiece Shell.

11. Remove the two (2) Switch Assembly Mounting Screws.

12. Remove the Cord and Switch Assembly from the Upper Handpiece Shell. (NOTE: DO NOT discard or lose Spacer).

13. Loosen Strain Relief Screw.

14. Remove Cord and Switch Assembly by sliding to rear of Upper Handpiece Shell, lifting gently on the Cord.

15. Clean switch on PC Board of Cord and Switch Assembly by brushing solvent between the contact points.

16. Reassemble the Handpiece in reverse order.

    The five (5) Heater Assembly wires are color coded to match with colored markings over Heater Wire Receptacles on PC Board of the Cord and Switch Assembly. Insure that the spacer is reinstalled with the Cord and Switch Assembly. Failure to do so will cause Handpiece to short when Switch is activated. Internal damage to electronic circuitry will result.

17. Plug “tan” leads into remaining receptacles of PC Board of the Cord and Switch Assembly.

18. Plug Extractor into Power Source and activate Switch. (NOTE: If Switch does not work, replace Cord and Switch Assembly).

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What steps are involved in Soldering Iron Heater Replacement?

When replacement of Soldering Iron Heater becomes necessary (refer to Table 3. Heater Corrective Maintenance), proceed with the following steps:

1. Disconnect Soldering Iron Handpiece Power Cord from MBT System.
2. Loosen Strain Relief Screw. (NOTE: Screw is located under label. Lift end of label to expose screw).
3. Remove three (3) screws from Heater flange and let Heater hang loose, refer to Figure 13.
4. Gently push Power Cord through Handpiece to expose connectors.
5. Using Tip Tool or needle nose pliers, disconnect the five (5) leads from Soldering Iron Power Cord (refer to Figure 13). Remove Heater Assembly from Handpiece.
6. Using Tip Tool or needle nose pliers, carefully plug the three (3) color coded leads (orange, blue and green) into matching color coded receptacles of the Soldering Iron Power Cord.
7. Plug “tan” leads into remaining receptacles of the Soldering Iron Power Cord.
8. Grasp and pull Power Cord back through Handpiece, tighten strain Relief Screw and replace label.
9. Attach Heater Assembly using the previously removed screws.

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What equipment is required for the Temperature Calibration Procedure?

• Digital Multimeter
• Temperature Calibration Kit PIN 6993-0113
  • “Gain” Calibration Assembly
  • “Offset” Calibration Assembly

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What are the phases of the Temperature Calibration Procedure?

This calibration procedure is broken down into two phases.

• Phase 1 is to be performed for temperature calibration.
• Phase 2 need only be conducted if the set and read of a given channel do not match, within ± 1 °F, when the iron/extractor has reached its idle temperature.

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What are the steps for PHASE 1 of the Temperature Calibration Procedure?

1. With the unit turned off and unplugged, unscrew the front panel (10 screws). Pull the front panel out enough to expose the calibration trim pots near the left and right edge of the front panel circuit board (take care not to disconnect any cabling).
2. Turn the iron and extractor control knobs completely counter clockwise. Position the display switch to the iron channel (refer to figure 18).
3. Apply power to the unit and turn the power switch on.
4. Plug the “Gain” calibration board, marked 57 in red ink, (276.07 Ω resistor) into the “IRON” receptacle on the front panel (refer to figure 18).
5. Note the voltage across the calibration board test points.
6. Plug the “Gain” calibration board, marked 57 in red ink, (276.07 Ω resistor) into the “EXTR” receptacle on the front panel (refer to figure 18).
7. Adjust R29 (refer to figure 2) until the voltage across the calibration board test points matches the noted voltage on the “IRON” channel within ± .1 mVDC.
8. Plug the “Gain” calibration board, marked 57 in red ink, (276.07 Ω resistor) into the “IRON” receptacle on the front panel (refer to figure 18).
9. Position °C/°F switch to °C (refer to figure 18).
10. Adjust R42 until the display reads 482.
11. Plug the “Offset” calibration board, marked 58 in black ink, (218. 72 Ω resistor) into the “IRON” receptacle on the front panel (refer to figure 18).
12. Read the displayed value, subtract it from 316, multiply by 2, and add 316 (i.e. 2 x [316-Displayed Value] + 316). Adjust R43 until the display reads this calculated result.
13. Plug the “Gain” calibration board, marked 57 in red ink, (276.07 Ω resistor) into the “IRON” receptacle on the front panel (refer to figure 18).
14. The display should read 482, if it does not repeat steps 10 through 14.
15. Position °C/°F switch to °F.
16. Adjust R36 until the display reads 900.
17. Plug the “Offset” calibration board, marked 58 in black ink, (218. 72 Ω resistor) into the “IRON” receptacle on the front panel (refer to figure 18).
18. Read the displayed value, subtract it from 600, multiply by 2, and add 600 (i.e. 2 x [600-Displayed Value] + 600). Adjust R34 until the display reads this calculated result.
19. Plug the “Gain” calibration board, marked 57 in red, (276.07 Ω resistor) into the “IRON” receptacle on the front panel (refer to figure 18).
20. The display should read 900, if it does not repeat steps 16 through 20.
21. Turn unit off and disconnect power.
22. Apply Glyptol, or a like substance, to R43, R42, R34, R36, and R29.
23. Remount front panel to main chassis (10 screws).