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PRO-WAVE 300TSW
August 10, 2005
8-21
8.17 Test Procedure for Secondary Diode D2, D3, D4, D5, D6
Part No: 4583A0060
Type: DBA200UA60
Diode D2, D3, D4,
D5 , D6
Front of
machine
Art # A-05596
figure 8-22: View with PCB15 (WK-4962) and links removed.
Test Procedure:
a. Check the condition of Secondary Diodes from machine Output Terminals with a diode tester. Connect the positive
diode tester lead to the negative output terminal and the negative diode tester lead to the positive output terminal
the reading should be 0.2- 0.3V. If this value is not obtained refer to individual diode tests as below.
b. In order to check D2, D3, D4, D5, D6 remove PCB15 (WK-4962) and links from the Power Source See Figure 8-22.
c. Disconnect the connections from the terminals of the Diode.
d. Verify the characteristic of the Diode using a diode tester.
e. Refer to Table 8-7 and Figure 8-23 for the test points on D2, D3, D4, D5, D6.
CAUTION
In the event of replacing a failed diode it is recommended that if the remaining diodes are more than 3
years old or have been subjected to heavy use they should also be replaced at that time.
CAUTION
When installing the Diode apply 1.0-1.4 N.m torque to the M4 mounting screws and 1.0-1.4 N.m torque to
the M4 Terminal screws. Clean and reapply heat sink compound (Shinetsu silicon G-747 or equivalent)
uniformly to the base surface of the Diode. Refer to Data Sheet for further detail.
TESTER
ACCEPTABLE
Positive lead
Negative lead
MODE
VALUE
Diode1 of D2, D3, D4,
Anode
Cathode
Diode
0.2 to 0.3V
D5, D6
Cathode
Anode
Test
Open circuit
Diode2 of D2, D3, D4,
Anode
Cathode
Diode
0.2 to 0.3V
D5, D6
Cathode
Anode
Test
Open circuit
COMPONENT TESTED
TERMINALS
Table 8-7: D1, D2, D3, D4, D5, D6 Test Points
Содержание PRO-WAVE 300 TSW
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