Troubleshooting; Schematic Diagram - Premier SCR-5689CMUS Manual De Instrucciones

Working Voltage: DC 10.8V-14.8V
Working Current: MAX 10A
Memory Current:<10mA
Working Temperature:-20 +60
Storage Temperature:-30 +80
Audio Parameter
Sound Non-balance ≤2dB
Channel Separation ≥56dB
Frequency Response 20Hz-20KHz(±3dB)
Radio Parameter
Frequence Range:
FM:87.50MHz-108.00MHz
AM:530KHz-1710KHz
Storage Number:
FM:18 radio stations AM:12 radio stations
Search Method:Manual/Auto
Amplifier Parameter
Test Voltage 14.4V
Maximum Output Power 4x25W
Speaker Impedance 4-8Ω
Trouble Shooting
Problem
Unit will not turn on
(no power)
Unit has power
(bus no sound)
Unit blows fuses
Excessive skipping
Unit carshed or all
buttons no function

Schematic diagram

cause
Yellow wire not connected or incorrect voltage
Red wire not connected or incorrect voltage
Black wire not connected
Fuse blown
Speaker wires not connected
One or more speaker wires touching each
other or touching chassis ground
Yellow or red wire touching chassis ground
Speaker wires touching chassis ground
Incorrect fuse rating
Unit is not mounted correctly
or back strap is not secure
The system problem
Action
Check connections
for proper voltage
(11-14.4VDC)
Check connection
to ground
Replace fuse
Check connections
at speakers
Insulate all bare speaker
wires from each other
and chassis ground
Check for pinched wire
Check for pinched wire
Use fuse with correct rating
Check mounting sleeve and
back strap support
Cut off electricity then
power on,then the unit will
be Reset.
P-5