Boeing 737-600 - Subtask 30-41-21-210-001; Subtask 30-41-21-810-002; Subtask 30-41-21-820-002

SUBTASK 30-41-21-210-001
(3) Determine the terminal board tap that matches the resistance measured on the connector
terminal (Table 501).
NOTE: For example, if you measure 40 ohms on D40070P-F (Left Front), the matching
terminal is TB5010-3 on M321.
NOTE: When checking the resistance on a used window, do not use the window code to
determine the terminal board tap. It is possible for the window resistance to change
with time.
Table 501/30-41-21-993-803
WINDOW HEAT
CONNECTOR
TERMINAL
WINDOW
CODE
RESISTANCE
TERMINAL
BOARD TAP
WHCU WDM
LEFT FRONT D40070P H13 31.4-35.1 OHM TB5010 - 1 M321 30-41-11
1 F H12 35.1-38.8 OHM -2
H11 38.8-42.6 OHM -3
42.6-47.3 OHM -4
47.3-52.0 OHM -5
RIGHT SIDE D40070P H16 55.7-62.3 OHM TB5014 - 1 M320 30-41-11
2 A3 H15 62.3-69.0 OHM 2
H14 69.0-75.5 OHM 3
75.5-81.6 OHM 4
81.6-90.3 OHM 5
90.3-100 OHM 6
RIGHT FRONT D40068P H13 31.4-35.1 OHM TB5012 - 1 M323 30-41-12
1 F H12 35.1-38.8 OHM 2
H11 38.8-42.6 OHM 3
42.6-47.3 OHM 4
47.3-52.0 OHM 5
LEFT SIDE D40068P H16 55.7-62.3 OHM TB5016 - 1 M322 30-41-12
2 A3 H15 62.3-69.0 OHM 2
H14 69.0-75.5 OHM 3
75.5-81.6 OHM 4
81.6-90.3 OHM 5
90.3-100 OHM 6
SUBTASK 30-41-21-810-002
(4) If the window resistance is outside the limits of the table, then go to the fault isolation manual
for assistance.
SUBTASK 30-41-21-820-002
(5) Connect the connector terminals to the applicable terminal board taps.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
30-41-21
Page 502
D633A101-ILF Oct 15/2018
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
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