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Service Manual

800RB
Table of Contents

Operating Instructions 3

Turn On / Calibration Procedure 6

Schematics 11

Engineering Change Orders (ECOs) 24

Bill of Materials 34
800RB T/O Procedure
GK Doc. # 420-0045-C
Board #'s: 206-0045-C (preamp), 206-0044-A (power amp),
206-0048-A (power supply). 800RB- all options 8/19/91

Setup
1) Variac on 0, power switch off- connect power cord.
2) Connect outputs to load box (100W-> load A, 300W-> load B).
3) Resistance loads open (switch in center).
4) Speaker on (connected to 100W output).
5) Load box to scope-B and AC- VM.
6) Set scope switch on load box to look at load A (down).
7) Set oscillator on 200 Hz sine wave @ 5mVrms (-46dBV).
8) DVM on 20mV (dc) range.
9) Scope