I've got an Agilent Analyser which appears to have developed a fault with the 10dB attenuator resistor or relay contact (poss. sticky relay?) which is hampering operation of the unit when front-end attenuation is needed to pad the level down on an incoming signal. It also affects the unit's RF level self-cal so I've not been able to auto-calibrate it for a period of time.
I suspect either a resistor has gone o/c, has a dry joint or the relay has a sticky contact. Has anyone experience of this and does someone have a copy of the unit's service manual for schematic references etc? It shouldn't take long to sort but wouldn't mind a .PDF of the manual to hand for this and further problems I might encounter in the future.