Maintenance
6-4 SPG600 & SPG300 Sync Pulse Generators Service Manual
Cleaning – Interior. Examine the interior of the sync pulse generator for dust build
up. If the interior needs cleaning, use low-velocity, dry air to blow away dust or
lint. If air alone does not remove all of the dust and lint, use a soft brush to complete
the task. Be extremely careful not to disturb components on the modules during
cleaning.
Lubrication. There is no periodic lubrication required for the sync pulse generator.
Table 6-2: Internal inspection check list
Item Inspect for Repair action
Circuit boards Loose, broken, or corroded solder
connections. Burned circuit
board. Burned, broken, or
cracked circuit-run plating.
Remove failed module and
replace with a fresh module.
Resistors Burned, cracked, broken, or
blistered condition.
Remove failed module and
replace with a fresh module.
Solder connections Cold solder or rosin joints. Resolder joint and clean with
isopropyl alcohol.
Capacitors Damaged or leaking cases.
Corroded solder on leads or
terminals.
Remove damaged module and
replace with a fresh module from
the factory.
Semiconductors Loosely inserted in sockets.
Distorted pins.
Firmly seat loose semiconductors.
Remove devices that have
distorted pins. Carefully straighten
pins (as required to fit the socket),
using long-nose pliers, and
reinsert firmly. Ensure that
straightening action does not
crack pins, causing them to break
off.
Wiring and cables Loose plugs or connectors.
Burned, broken, or frayed wiring.
Firmly seat connectors. Repair or
replace modules with defective
wires or cables.
Chassis Dents, deformations, and
damaged hardware.
Straighten, repair, or replace
defective hardware.
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