(2)
SSM 24-32-11
B.
Access
(1)
Location Zone
205 Electronic Compartment
(2)
Access Panel
1201L Electronic Equipment Access Door
C.
Prepare For Removal
S 864-014
(1) Before you remove TRU 1, T11, open this circuit breaker and install DO-NOT-CLOSE tag:
(a) C806, TR UNIT NO 1, P6 PNL
S 864-015
(2) Before you remove TRU 2, T12, open this circuit breaker and install DO-NOT-CLOSE tag:
(a) C807, TR UNIT NO 2, P6 PNL
S 864-016
(3)
Before you remove TRU 3, T13, open this circuit breaker and install DO-NOT-CLOSE tag:
(a) C808, TR UNIT NO 3, P6 PNL
D.
Procedure
(1)
Get access to the E3 rack in the electronic compartment.
(2)
Remove the transformer rectifier (Ref 20-10-07/201).
S 014-001
S 024-002
TASK 24-21-31-404-010
3. Transformer Rectifier Installation (Fig. 401)__________________________________
A. References
(1) 20-10-07/201, E/E Rack-Mounted Components
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
Transformer Rectifier Installation
Figure 401
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
(2)
SSM 24-32-11
B.
Access
(1)
Location Zone
205 Electronic Compartment
(2)
Access Panel
1201L Electronic Equipment Access Door
C.
Procedure
S 014-005
(1)
Get access to the E3 rack in the electronic compartment.
S 424-006
(2)
Install the transformer rectifier (Ref 20-10-07/201).
S 864-017
(3)
If you installed TRU 1, T11, close this circuit breaker and remove DO-NOT-CLOSE tag:
(a) C806, TR UNIT NO. 1, P6 PNL
S 864-018
(4) If you installed TRU 2, T12, close this circuit breaker and remove DO-NOT-CLOSE tag:
(a) C807, TR UNIT NO. 2, P6 PNL
S 864-019
(5) If you installed TRU 3, T13, close this circuit breaker and remove DO-NOT-CLOSE tag:
(a) C808, TR UNIT NO. 3, P6 PNL
S 714-007
(6) Do these steps for the test of the No. 1 and No. 2 transformer rectifier:
(a)
Make sure that the BUS TRANS switch is in the AUTO position.
(b)
Open these circuit breakers and attach the DO-NOT-CLOSE tags:
1) P6-4 AIR CONDITIONING AND AIRSTAIR CONTROL AC POWER INDICATION Panel a) C807, TR UNITS NO. 2 b) C808, TR UNITS NO. 3 c) C1065, DC BUS 1 d) C1066, DC BUS 2
(c)
Make sure that these circuit breakers are closed:
1) P6-4 AIR CONDITIONING AND AIRSTAIR CONTROL AC POWER INDICATION Panel a) C4, CONTROL GENERATOR NO. 1 b) C5, CONTROL GENERATOR NO. 2 c) C6, CONTROL GENERATOR APU d) C806, TR UNITS NO. 1
2) P6-5 DC POWER INDICATION Panel a) C31, DC BUS POWER NO. 1
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737-300/400/500MAINTENANCE MANUAL
b) C23, DC BUS INDICATION BUS NO. 1
3) P18-5 Panel
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