SERVICE MANUAL SAMPLE |
CHANNECS HOME-THEATER CINEMA
MODEL:SPS-858
CONTENTS
1. |
Safety precautions....................................... |
2 |
2. |
Specifications ............................................. |
3 |
3. |
Location of users controls............................ |
4 |
-.Rear panel
-. Side panel
4. |
Connecting to equipment |
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5. |
Trouble shooting guide.................................. |
6 |
6. |
Ic voltage chart iv......................................... |
7/22 |
7. |
Connecting guide........................................ |
23 |
SERVICE MANUAL 1
1. SAFETY PRECAUTIONS
PRECAUTIONS:
1.Power supply: This speaker can only use the type of power supply as specified in the instruction manual or marked on the master speaker.
2.Power line protection: Make sure to avoid
power line being trampled, pulled or |
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squeezed by heavy objects. In particular, |
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be sure to hold the plug when pulling the |
6.Removing cabinet: In case of speaker |
power line from the socket. Never pull on |
failure or problems due to improper |
the power line. besides, keep the power line |
use, don't dismantle the unit to repair |
away from hot objects. |
or check by yourself. Please turn off |
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the power and use after checked by |
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specialists to avoid causing personal |
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accident. |
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No |
3.Cord polarity: The speaker cord must be 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.
7.Appearance cleaning: Don't use volatile solutions to clean the speaker to avoid damaging the appearance.
8.Please cut off the power: If you don't 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
TECHNICALSPECIFICATION:
OUTPUT POWER SUB-WOOFER |
35 |
RMS |
THD |
0.7%) |
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FRONT |
15W+15W |
RMS |
THD |
0.7%) |
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CENTER |
15W RMS |
THD |
0.7%) |
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SURROUND |
15W+15W |
RMS |
THD |
0.7%) |
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SUB WOOFER IMPEDANCE |
8 |
OHM |
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FRONT/CENTER/SURROUND |
4 |
OHM |
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FREQUENCE RESPONSE |
50Hz-20KHz |
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SEPARATION |
40dB |
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S/N RATIO |
80dB |
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DIMENSION |
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SUB WOOFER |
W170*D355*H260mm |
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FRONT/CENTER/SURROUND |
W97*D135*H155mm |
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SERVICE MANUAL 3
3. LOCATION OF USERS CONTROLS |
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SIGNAL INPUT/OUTPUT BOARD |
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AC-3 |
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AUDIO |
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F.L. |
S.L. |
CE. |
L |
POWER |
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AC-3 |
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ON |
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AUDIO |
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ST. |
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OFF |
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5.1 |
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AUDIO |
F.R . |
S.R. |
S.W. |
R |
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F.R. |
F.L. |
S.R. |
S.L. |
CE. |
AC240V 50Hz |
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R.FRONT OUTPUT |
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L.FRONT OUTPUT |
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R.SURROUND OUTPUT |
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L.SURROUND OUTPUT |
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CENTER OUTPUT |
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AUDIO INPUT PORT |
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AC-3 INPUT PORT |
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AC-3/AUDIO SWITCH BUTTON |
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ST/5.1 SWITCH BUTTON |
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POWER ON/OFF |
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POWER CABLE |
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FRONT PANNEL ILLUSTRATION |
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YF-II |
POWER |
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FRONT VOLUME |
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SURROUND VOLUME |
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CENTER VOLUME |
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SUB-WOOFER VOLUME |
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F.VOL |
S.VOL C.VOL SW.VOL |
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SERVICE MANUAL 4 |
4. CONNECTING TO EQUIPMENT
CONNECTION GUIDE
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AC-3 |
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AUDIO |
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F.L. |
S.L. |
CE. |
L |
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POWER |
AC-3 |
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ON |
AUDIO |
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ST. |
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OFF |
5.1 |
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AUDIO |
F.R. |
S.R. |
S.W. |
R |
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F.R . |
F.L. |
S.R. |
S.L. |
CE. |
L.FRONT OUTPUT |
R.FRONT OUTPUT |
CENTER OUTPUT |
L.SURROUND OUTPUT |
R.SURROUND OUTPUT |
AUDIO INPUT PORT |
AC-3 INPUT PORT |
POWER ON/OFF |
POWER CABLE |
SERVICE MANUAL 5
5. TROUBLE SHOOTING GUIDE
TROUBLE SHOOTING AND RESOLUTION
1
No sound
check whether the secondary alternating voltage12v*12v of thransformer is ok or not.
OK
check whether the current
transfer output voltsd.c is ok
or not.
OK
judge whether JRC4558,
TL087.4053 .4006,TOA7275,
TDA2030A,are ok or not
dried machine
2
NOT
NOT
NOT
replace the
transformer
check whether the capacitor bc16 bc17 are ok or not.
replace it
check whether the power switch is all right or not. |
BURNED OUT |
replace the switch |
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OK |
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NOT |
check the plug, are all |
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check whether there is 220V alternating |
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current of the transformer in elementary. |
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right or not. |
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OK |
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NOT |
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check whether there is 12V alternating voltage |
replace the transformer |
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output in the transformer ok or not. |
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3 |
Error |
Possible reason |
Obivating |
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The power plug is not exactly inserted. |
Insert the plug in right place |
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The connection of output and input is not well |
Connect the output and input |
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No sound |
The input format is not right |
cables |
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The volume control be settled in the minimum |
Adjust the volume |
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Rest estate |
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SERVICE MANUAL 6
SERVICE MANUAL 7
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