RAYMOND SERVICE INFORMATION
The Raymond Corporation
Corporate Headquarters
P O Box 130
Greene, New York 13778-0130
RSI GEN-12-003 Model(s)
May 29, 2012 Multiple
SUBJECT: Q1 Transistor Test Procedures
GENERAL A new type of transistor, P/N 1133900 (with a red power wire extending from the
INFORMATION: module), is supplied in Kit P/N 1133904.
SERVICE Use the following information to test transistor P/N 1133900.
INFORMATION:
Static Test
1. Turn the key switch OFF and disconnect the battery connector.
2. Remove all wires connected to the module.
3. Perform multi-meter tests per Table 1. Refer to Figure 1.
Note: When it says Charges to OL, a varying resistance reading will appear on the
meter momentarily and then show OL.
Figure 1 Transistor Module Terminals
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©2012 The Raymond Corporation. Page 1 of 3
FOTP-0060/1-23-12/C
SERVICE Table 1 Meter Tests
INFORMATION:
continued
Testing the Red Power Wire
This input provides power to an internal linear power supply. Measuring between the red
power wire (meter positive (+) to red wire) and the various module electrodes with a
typical multi-meter will produce fairly high impedances >1M Ohm. Measuring between
the red power wire (meter negative (–) to red wire) and the various module electrodes will
produce infinite resistance.
Using a bench test method (refer to Figure 2):
1. Configure test circuit as shown.
2. Activate switch. Lamp should illuminate.
3. Deactivate switch. Lamp should extinguish.
Notes:
• If lamp illuminates continuously throughout test, the transistor is bad.
• If lamp fails to illuminate, the transistor is bad.
• E to Ex terminals should always measure 0 ohms.
• Resistance between the Emitter/Source and Collector/Drain should measure >1M
Ohm when polarized in either direction with ohmmeter (module must be
disconnected from test circuit for resistance test).
Figure 2 Test Circuit
®
Raymond is a registered trademark of The Raymond Corporation RSI GEN-12-003
©2012 The Raymond Corporation. Page 2 of 3
FOTP-0060/1-23-12/C
PARTS Now available through the Parts Distribution Center.
AVAILABILITY:
FILING File this notice in all Maintenance Manuals that use a Q1 Transistor in the drive circuit.
INSTRUCTIONS:
®
Raymond is a registered trademark of The Raymond Corporation RSI GEN-12-003
©2012 The Raymond Corporation. Page 3 of 3
FOTP-0060/1-23-12/C
