Maintenance - AT&T Bell System 43B Identification, Installation, Operation, Connections, And Maintenance

SECTION SO 1-165-1 02
Fig. 8-227B Key Telephone Unit
Fig. 9-43B Dial, Key Telephone System Line
and Multistation Use with Transfer
From Restricted to Unrestricted Mode,
Connections
Fig. 10-43B Dial, Key Telephone System Line
and Single Station Use With Optional
Mode, Connections
Fig. 11-43B Dial Connections, Factory Wiring,
Restricted Mode
Fig. 12-53B Dial, Key Telephone System Line
and Single Station Use With Optional
Mode, Connections
Page 6
Fig. 13-53B Dial, Key Telephone System Line
and Multistation use With Transfer
From Restricted to Unrestricted Mode,
Connections
Fig. 14-53B Dial Connections, Factory Wiring,
Restricted Mode
6. MAINTENANCE
6.01
Maintenance is limited to checking w1rmg
for secure and correct connections and
replacement of dialer.
6.02
Defective components listed in the ordering
guide which are available through supply
channels may be replaced. Do not attempt any
maintenance to the dial mechanism.