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Subtask 26-23-00-865-051
B. Open, safety and tag this(these) circuit breaker(s):
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PANEL DESIGNATION IDENT. LOCATION
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**ON A/C 004-049, 051-099, 101-105, 151-199, 201-299,
49VU AIR COND/SDCU/CHAN1 11WQ C06 R **ON A/C 106-149, 301-399, 401-499,
49VU AIR COND/CIDS/SDF/DIR2 ESS 18WH C06
49VU AIR COND/CIDS/SDF/DIR1 ESS 15WH C05
**ON A/C 004-049, 051-099, 101-105, 151-199, 201-299,
122VU AIR COND/SDCU/CHAN2 12WQ T18 R **ON A/C 106-149, 301-399, 401-499,
122VU AIR COND/CIDS/SDF/DIR NORM/2 14WH T18
122VU AIR COND/CIDS/SDF/DIR NORM/1 17WH T17
R **ON A/C 004-049, 051-099, 101-149, 151-199, 201-299, 301-399, 401-499,
Subtask 26-23-00-865-063
C. Make sure that this(these) circuit breaker(s) is(are) closed:
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PANEL DESIGNATION IDENT. LOCATION
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122VU AIR COND/CARGO/FIRE/EXTIG 1WX T19
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**ON A/C 004-049, 051-099, 101-149, 201-299, 301-399,
Subtask 26-23-00-010-051
D. Get Access
(1) Put the access platform below the FWD cargo-compartment door 825. (2) Open the FWD cargo-compartment door 825 (Ref. TASK 52-30-00-860-001). (3) Remove the panel 132MW. **ON A/C 151-199,
Subtask 26-23-00-010-051-A
D. Get Access
R (1) Put the access platform below the FWD cargo-compartment door 825. (2) Open the FWD cargo-compartment door 825 (Ref. TASK 52-30-00-860-001). (3) Remove the panel 132SW. **ON A/C 401-499,
R Subtask 26-23-00-010-051-B
R D. Get Access
R R R R (1) Put the access platform below the AFT cargo-compartment door 826. (2) Open the AFT cargo-compartment door 826 (Ref. TASK 52-30-00-860-001). (3) Set the CARGO COMPT LIGHT switch 8LU to the ON position. (4) Remove the panel 162AW. **ON A/C 004-049, 051-099, 101-149, 151-199, 201-299, 301-399,
Subtask 26-23-00-020-052
E. Disconnect the electrical connectors 4005 WX-C and 4005 WX-A.
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R **ON A/C 401-499,
R Subtask 26-23-00-020-052-A
R E. Disconnect the electrical connectors 4015 WX-C and 4015 WX-A.
R **ON A/C 004-049, 051-099, 101-149, 151-199, 201-299, 301-399, 401-499,
4. Procedure_________ **ON A/C 004-049, 051-099, 101-149, 151-199, 201-299,
Subtask 26-23-00-720-050
A. Functional Test of the Firing Circuit Continuity -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the electrical connector 4005 WX-C:
-connect the DC voltmeter
between pins A und B.
2. On the CARGO SMOKE overhead panel 22VU:
-push and hold the FWD
cargo-compartment DISCH
pushbutton switch 3WX.
-release the FWD
cargo-compartment DISCH
pushbutton switch 3WX.
3. On the electrical connector 4005 WX-A:
-connect the DC voltmeter
between pins A and B.
4. On the CARGO SMOKE overhead panel 22VU:
On the electrical connector 4005 WX-C:
-
the voltmeter reads zero.
On the electrical connector 4005 WX-C:
-
the voltmeter reads 28 V DC.
-
the voltmeter reads zero.
On the electrical connector 4005 WX-A:
-
the voltmeter reads zero.
On the electical connector 4005 WX-A:
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