Agilent Technologies 7820A Service Manual

Agilent 7820 GC Service
9
Chromatographic symptoms ................. 252
Loss of sensitivity or excessive drift ... 253
Loss of peaks in specific areas of the
chromatogram ............................. 253
Extraneous peaks ......................... 253
Peak broadening and tailing .............. 254
Baseline shifts .......................... 254
Baseline upsets .......................... 254
Variation in peak area and retention time 255
Pressure check ........................... 255
11 Electrical 257
Power options ............................... 258
Converting the power option ................. 259
Remote start/stop connection ................ 261
Remote control .............................. 262
Temperature sensor resistance ............... 263
Ceramic and glass fuses ..................... 263
AC power board schematic .................... 264
Oven shroud ................................. 265
12 Firmware 267
Firmware overview ........................... 268
Confirm firmware update ..................... 268
To Update GC Firmware ....................... 269
To Update Frit Constants .................... 271
13 Service Mode Diagnostics 275
Service mode overview ....................... 276
Detector diagnostics ........................ 276
Signal board diagnostics .................... 277

Agilent Technologies 7820A Specifications

General

Brand	Agilent Technologies
Model	7820A
Category	Laboratory Equipment
Language	English