Chapter 6 Service (continued)
Troubleshooting Hints 163
Unit is Inoperative 163
Unit Reports Error 705 164
Isolating to an Assembly 164
Unit Fails Self-Test 164
Power Supplies 165
Self-Test Procedures 167
Power-On Self-Test 167
Complete Self-Test 167
Plug-in Module Self-Test 167
Self-Tests 168
Battery Check and Replacement 172
To Verify the Battery 173
To Replace the Battery 173
Disassembly 174
General Disassembly 175
Internal DMM Disassembly 176
Front-Panel Chassis Disassembly 177
Additional Disassembly 178
Plug-in Module Disassembly 179
Chapter 7 Replaceable Parts
Replaceable Parts 182
To Order Replaceable Parts 182
34970A Mainframe 183
34970-66501 Main PC Assembly (A1) 184
34970-66502 Front-Panel and Keyboard PC Assembly (A2) 189
34970-66503 Backplane PC Assembly (A3) 190
34970-66504 Internal DMM PC Assembly (A4) 191
34901A 20-Channel Multiplexer 196
34902A 16-Channel Multiplexer 200
34903A 20-Channel Actuator 202
34904A 4x8 Matrix 204
34905A/34906A RF Multiplexer 207
34907A Multifunction Module 209
34908A 40-Channel Multiplexer 213
Manufacturer’s List 216
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