6.1
General Information
SECTION VI
MAINTENANCE
Although this instrument was designed using as many commonly available components as
possible, thus allowing easy service, it is still recommended that only qualified technical
personnel attempt repairs.
Should difficulties be encountered in the use of your controller, the following list of
symptoms and remedies, along with the circuit descriptions of Section 5, the schematics, and
the parts location diagrams can prove useful in quickly getting back into operation.
The warranty on this instrument provides for free service at the factory for the first
full year after delivery, and at a reasonable service charge thereafter. However, since the
majority of parts are readily available at your local electronics supply stores, it may, in some
cases, prove most expedient for you to repair minor troubles should they occur.
If the prescribed remedies do not correct the troubles, or if additional assistance or
special parts are required, contact the Technical Service Department, Granville-Phillips
Company, 5675 East Arapahoe Avenue, Boulder, Colorado, 80303. Telephone: 303-443-7660.
Repairs properly made with equivalent electronic parts and rosin core solder, which do not.
damage other portions of the unit, do not represent a violation of the warranty. A
desoldering tool is required for satisfactory removal of components from the circuit boards.
Check the following list for the observed symptoms. This listing of symptoms and
remedies is not complete, but should be sufficient to solve most problems. All possible causes
of failure should be thoroughly explored before attempting any component replacement.
DANGER HIGH VOLTAGE
HIGH VOLT AGE IS PRESENT WITHIN THIS
UNIT CAPABLE OF CAUSING INJURY OF DEATH.
DO NOT TOUCH CABLE CONNECTIONS OR IN
SIDE OF THE CONTROLLER WHEN POWER IS
APPLIED. FOLLOW SAFE PROCEDURES WHEN
OPERATING AND WORKING ON THE EQUIPMENT
TO AVOID SHOCK HAZARDS.
CAUTION: It is necessary to use extreme caution when troubleshooting to prevent damage to
the CMOS logic elements.
6.2 Guidelines for Troubleshooting
The following guidelines are manufacturer recommended when performing
troubleshooting involving these components.
I.
Avoid placing static charges on any component.
2.
Use a conductive grounded work surface.
3.
Use a grounded type of soldering iron.
4.
Use conductive envelopes to store or ship CMOS devices.
6-1
