(1)
Open the door of the related overhead stowage compartment.
(2)
Remove the screws (6), the washers (7) and the cover (5).
(3)
Disconnect the Electrical Cconnectors:
(a)
Remove and discard the lockwire. CAUTION : MAKE MATCH MARKS ON ALL THE ELECTRICAL WIRES BEFORE YOU
_______ DISCONNECT THEM. INCORRECT CONNECTION OF WIRES WILL CAUSE DAMAGE TO EQUIPMENT.
(b)
Disconnect the electrical connectors (9 thru 13).
(c)
Put blanking caps on the disconnected electrical connectors.
(4)
Remove the cap (14).
(5)
Remove the bolts (2), the washers (3), the bonding straps (4) and the MCU (1).
Master Control Unit (MCU) Figure 401/TASK 25-21-34-991-001
R EFF : 301-399, 401-499, 25-21-34 Page 403 Aug 01/05
CES
TASK 25-21-34-400-001
Installation of the Master Control Unit (MCU)
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. 19-010 USA AMS 5687 LOCKWIRE STAINLESS STEEL ANNEALED 0.8MM DIA (Ref. 20-31-00)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
20-28-00-912-004 Electrical Bonding of Components With Conductive Bolts and Screws and Bonding Straps in the Fuselage and in the Wings (this does not include the tanks)-
24-42-00-861-001 Energize the Ground Service Network from the External Power 24-42-00-862-001 De-energize the Ground Service Network Supplied from the External Power 25-21-00-710-002 Operational Test of the In-Seat Power-Supply System (PED Power Supply) 25-21-34-991-001 Fig. 401
3. Job Set-up
__________
Subtask 25-21-34-861-051
A. Make sure that the ground service network is energized
(Ref. TASK 24-42-00-861-001).
(1) Make sure that the door of the related overhead stowage compartment is open.
(2) Make sure that the cover is open. R **ON A/C 301-399,
Subtask 25-21-34-865-051-A
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION FIN LOCATION -------------------------------------------------------------------------------2000VU PED 50HP B8
R **ON A/C 301-399, 401-499,
4. Procedure
_________
Subtask 25-21-34-420-050
A. Installation of the Master Control Unit (MCU) 55HP
(Ref. Fig. 401/TASK 25-21-34-991-001)
(1)
Put the MCU (1) in position and install the bonding strap (4), the washers (3) and the screws (2) (Ref. TASK 20-28-00-912-004).
(2)
Install the cap (14).
(3)
Connect the electrical connectors (9) thru (13):
(a)
Remove the blanking caps from the electrical connectors.
(b)
Make sure that the electrical connectors are clean and in the correct condition.
CAUTION : REFER TO THE MATCH MARKS MADE DURING THE REMOVAL WHEN
_______ YOU CONNECT THE ELECTRICAL WIRES. INCORRECT CONNECTION OF THE WIRES WILL CAUSE DAMAGE TO EQUIPMENT.
(c)
Connect the electrical connectors (9) thru (13).
(d)
Safety the connectors (9) thru (13) with MISCELLANEOUS (Material No. 19-010).
(4) Install the cover (5):
(a)
Make sure that the work area is clean and clear of tool(s) and other items.
(b)
Put the cover (5) in position and install the washers (7) and the screws (6).
(5) Close the door of the overhead stowage compartment. R **ON A/C 301-399,
Subtask 25-21-34-865-052
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
-50HP. R **ON A/C 301-399, 401-499,
Subtask 25-21-34-710-050
C. Do the operational test of the In-Seat Power-Supply system (Ref. TASK 25-21-00-710-002).
5. Close-up
________
Subtask 25-21-34-410-050
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
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