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(3)
Supply electrical power (AMM 24-22-00/201).
(a)
Make sure these switches on the P-5 overhead panel are in the positions shown in the table that follows:
~.................................... | Switch | Position | ...................................... | STBY POWER | AUTO | ...................................... | BATTERY | ON | ...................................... | BTB (4) | AUTO | ...................................... | EXT. PWR | ON | 2................…...................1
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(4)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a)
P7 Overhead Circuit Breaker Panel
1) 7F22 LANDING GEAR DSP & CONT PRI
2) 7F23 LANDING GEAR DSP & CONT ALTN
3) 7F25 PSEU SECT 1
4) 7F26 PSEU SECT 2
F.
Procedure (Fig. 501)
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MAINTENANCE MANUAL
Connectors for the PSEU on the E1 Shelf
Figure 501
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(1) Make sure there is 1 ohm or less between the pins of the connector on the E1 shelf, as shown below:
~................................................................. |CONNECTOR | PIN | PIN | ................................................................... |DM 7838 CA | C11 | D11 | ................................................................... |DM 7838 FA | G11 | H11 | 2..........................….......................…..............1
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(2) Make sure there is 18 to 32 volts on the pins of the connector on the E1 shelf, as shown below (Fig. 501):
~................................................................. | CONNECTOR | PIN (18 to 32 Volts) | PIN (0 Volts) | ................................................................... |DM 7838 CA | A01 | A03 | ................................................................... |DM 7838 CA | A13 | A15 | ................................................................... |DM 7838 FA | K01 | K15 | ................................................................... |DM 7838 FA | K13 | K15 | 2.....................…..........................…................1
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(3)
Open the 7F23 LANDING GEAR DSP & CONT ALTN circuit breaker on the P7 Panel and install a DO-NOT-CLOSE tag.
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(4)
Make sure that 28 volts dc is not found at the connector DM7838 FA, pin K1, on the E1 shelf.
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(5)
Open the 7F22 LANDING GEAR DSP & CONT PRI circuit breaker on the P7 Panel and install a DO-NOT-CLOSE tag.
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(6)
Make sure that 28 volts dc is not found at the connector DM7838 CA, pin A1, on the E1 shelf.
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(7)
Open the 7F25 PSEU SECT 1 circuit breaker on the P7 Panel and install a DO-NOT-CLOSE tag.
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(8)
Make sure that 28 volts dc is not found at the connector DM7838 FA, pin K13, on the E1 shelf.
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(9)
Open the 7F26 PSEU SECT 2 circuit breaker on the P7 Panel and install a DO-NOT-CLOSE tag.
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