Troubleshooting Guide - Zeck PT Serie Manual De Funcionamiento

PT series owner's manual

4. Troubleshooting Guide

S y m p t o m
All LEDs dark
'Protect' LED remains red after turn-on
No Sound
NLR control remains lit for prolonged time
TCL control remains lit for prolonged time
14
P r o b l e m
No power supply
Output protection relay has been triggered - speaker cables for short circuits or
Signal LED lit ?
Signal LED dark ?
Amplifier is constantly limiting output
power to prevent distortion
Amplifier is constantly limiting output
power to prevent overheating
What to check
- mains cord
- house fuses
- amplifier fuse (refer to qualified service)
- internal power supply
(refer to qualified service)
incorrect wiring
- MODE selector switch for correct setting
- amplifier temperature & air supply
- speakers & crossover networks for short
c i r c u i t s
- output stage (refer to qualified service)
- speaker cables & speakers
- volume controls
- input cables & connectors
- preceding audio device
- PROTECT LED (see above)
- output stage (refer to qualified service)
- input level
- output load not less than 2 ohms
- speakers & crossovers
- output stage (refer to qualified service)
- sufficient back panel clearance for air
i n t a k e
- dirty heatsinks (refer to qualified service)
- cooling fans (refer to qualified service)
owner`s manual PT series © 1995 Zeck Audio