(2)
 In the cockpit, on the EMER ELEC PWR section of the overhead panel 21VU, put a warning notice to tell persons not to operate the pushbutton switches.
 Subtask 24-24-34-010-050
 B. Get access to the Avionics Compartment
 (1) Put an access platform at the access doors 812 and 822 of the avionics compartment.
 (2) Open the access doors 812 and 822.
 Subtask 24-24-34-865-050
 C. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
R 105VU ELEC/CSM/G /EV AUTO/SPLY 7XE C01 R 106VU CSM/G /EV/MAN/SPLY 6XE B04 R
 4. Procedure
_________
 (Ref. Fig. 401/TASK 24-24-34-991-001)
 Subtask 24-24-34-020-050
 A. Removal of the GCU
 (1)
 Disconnect the electrical connector (4).
 (2)
 Loosen the 4 screws (3).
 (3)
 Hold the CSM/G control unit (1).
 (4)
 Remove the screws (3) and the washers (2).
 (5)
 Remove the CSM/G control unit (1).
 (6)
 Put blanking caps on the electrical connector (4) and the electrical receptacle (5).
 CSM/G Control Unit 
 Figure 401/TASK 24-24-34-991-001 
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 TASK 24-24-34-400-001
 Installation of the CSM/G Control Unit (1XE)
 1. Reason for the Job
__________________
 Self Explanatory
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific access platform No specific warning notice
 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-24-00-710-001  Operational Test of the Emergency Generation System
 24-24-00-710-002  Operational Test of the Emergency Generator Control Unit (GCU) from Centralized Fault Display System (CFDS)
 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 24-24-34-991-001 Fig. 401
 3. Job Set-up