SERVICE MANUAL SAMPLE
SPS-866A
CHANNECS HOME-THEATER CINEMA
MODEL:SPS-866A
CONTENTS
1. Safety precautions.......................................2
2. Specifications .............................................3
4. Connecting to equipment..............................4
5. Trouble shooting guide..................................5
6. Ic voltage chart iv ........................................6/7
7. Connecting guide ........................................8
SERVICE MANUAL
1
1. SAFETY PRECAUTIONS
PRECAUTIONS:
Power supply: This speaker can only use
1.
the type of power supply as specified in
the instruction manual or marked on the
master speaker.
Power line protection: Make sure to avoid
2.
power line being trampled, pulled or
squeezed by heavy objects. In particular,
be sure to hold the plug when pulling the
power line from the socket. Never pull on
the power line. besides, keep the power line
away from hot objects.
Removing cabinet: In case of speaker
6.
failure or problems due to improper
use, don't dismantle the unit to repair
or check by yourself. Please turn off
the power and use after checked by
specialists to avoid causing personal
accident.
Cord polarity: The speaker cord must be
3.
correctly connected as per marking on the
function panel. and Must have
correct polarity so maximize the inherent
quality of the speaker. Otherwise, normal
function and output will be affected.
4.
Ventilation: This speaker has good
adaptability to the environment, but pay
attention to the environmental ventilation
during long periods of work.
5.
Water and moisture: Keep the sound box
away from rain, water spray, water splash
and wet environment, such as bath,
kitchen, water basin, washing basin, damp
basement, swimming pool, etc.
+
-
No
Appearance cleaning: Don't use
7.
volatile solutions to clean the speaker
to avoid damaging the appearance.
Please cut off the power: If you don't
8.
use the sound system for a long time,
please remove the cable wire or
disconnect the power to ensure the
speaker safety and household safety.
SERVICE MANUAL
2
2. SPECIFICATIONS
TECHNICAL SPECIFICATION:
OUTPUT POWER 20W+20W(RMS)
P.M.P.O 600W
SPEAKER UNIT TWEETER 1.5", GASS 4"
IMPEDANCE 4(OHM)
FREQUENCY RESPONSE AMPLIFIER: 20Hz~20KHz
POWER AC220V 50/60Hz
SIGNAL INPUT PORT RCA JACK
TREBLE +/- 10dB
BASS +/- 10dB
SEPARATION 45dB
SPEAKER: 30Hz~18KHz
S/N RATIO 75dB
DIMENSIONS W166*D238*H355mm
WEIGHT 7.60kg
SERVICE MANUAL
3
4. CONNECTING TO EQUIPMENT
CONNECTING GUIDE
FOR WOOFER
COMPUTER
C D
RED
ON
OFF
WALKMAN
VCD/LD
WHITE
AC220V 50/60Hz
SERVICE MANUAL
4
5. TROUBLE SHOOTING GUIDE
TROUBLE SHOOTING AND RESOLUTION
1
No sound
dried machine
2
check whether the power switch is all right or not.
OK
check whether there is 220V alternating
current of the transformer in elementary.
BROKEN
NOT
check whether the vice-level I
alternating voltage13v*2 of
thransformer is ok or not.
check whether the current
transfer output voltsD.Cis ok
or not.
judge whether LM1875 is,are
ok or not
Check the speakers
ok or not
replace the it
check the plug,power
buttonare all right or not.
OK
OK
OK
NOT
NOT
NOT
NOT
replace the
transformer
check whether the
capacitor C21.C22
are ok or not.
replace it
Replace it
3
Error
No sound
Possible reason
The power plug is not exactly inserted.
The connection of output and input is not well
The input format is not right
The volume control be settled in the minimum
Rest estate
Obivating
Insert the plug in right place
Connect the output and input
cables
Adjust the volume
SERVICE MANUAL
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SERVICE MANUAL
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SERVICE MANUAL
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SERVICE MANUAL
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