01748nam a22002057a 4500003000400000005001700004008004100021020001000062028007900072040002400151082001700175100005000192245007600242260007000318300000700388504106100395650004401456650001301500700002901513OSt20190429115102.0170710b        xxu||||| |||| 00| 0 eng d  aMES31  bNational Instructional Media Institute (NIMI)c36280d24/04/2017q09/06/17  aBSDUbEnglishcBSDU  a621.384bREP  aNational Instructional Media Institute (NIMI)  aRepair & Maintenance of Intercom System : For Modular Employable Skills  aChennaibNational Instructional Media Institute (NIMI)c2014,2008  a75  aContents

Practical
Measure the Parameters Using Multimeter
Measurement of Resistance and Continuity
Identify Different External and Internal Parts of a Telephone Set
Electrical Safety
Checking when Exchange is Dead
Checking Exchange Down
Handset Problem & Telephone Dead
Speech Problem
Dialing Problem
Ringer Problem
Coil Problem
Line Card Problem
Color Code Identification
EPABX (Electronic Private Automatic Branch Exchange)
Tracing the Wiring Fault
Disassembling Headset
Disassemble a Telephone Set
Re-assembling the Handset
Noise Problem

Theory
Multimeter Measurement
Measurement of Resistance and Continuity
Identify the Different External and Internal Parts of Telephone Set
Electrical Safety
Checking when Exchange is Dead
Checking When Exchange is Down
Telephone Dead
Speech Problem
Dialing Problem
Ringer Problem
Coilcard and Krimines
Line Card Kriming
Color Code Identification of 5 Pair Cable & 10 Pair Cable
EPABX
Tracing the Wiring Fault
Disassemble a Headset
Troubleshooting Telephone Handset
Reassembling a Telephone Housing 
Noise Problem  aElectronics : Modular Employable Skills  aIntercom  aDGT, MSDE, Govt of India