Service Guide - Genius
Service Guide - Genius
Service Guide - Genius
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<strong>Service</strong> <strong>Guide</strong><br />
GHT-V150<br />
SERVICE GUIDE<br />
GHT-V150<br />
Version:1.0<br />
Version 1.0 Page 1 of 21
<strong>Service</strong> <strong>Guide</strong><br />
GHT-V150<br />
Revision History<br />
Version Date Change<br />
1.0 10/11/2005<br />
Version 1.0 Page 2 of 21
<strong>Service</strong> <strong>Guide</strong><br />
GHT-V150<br />
Table of Contents<br />
Revision History 2<br />
Table of Contents 3<br />
Getting Started 4<br />
Conventions Used in this <strong>Guide</strong> 4<br />
Safety Precautions 4<br />
Chapter 1. How to Handle Defective Returns 5<br />
1.1 Overview 5<br />
1.2 Problems 6<br />
1.2.1 FL/FR, RL/RR channels no sound 7<br />
1.2.2 CEN channel no sound 8<br />
1.2.3 Woofer channel no sound 8<br />
1.2.4 Woofer no power 9<br />
Chapter 2. Specifications 10<br />
Chapter 3. Block Diagram 12<br />
Chapter 4. Exploded View 13<br />
Chapter 5. Part List 15<br />
Chapter 6. Schematic Diagram 16<br />
Schematic Diagram 17<br />
Schematic Diagram 18<br />
Schematic Diagram 19<br />
Schematic Diagram 20<br />
Chapter 7. Important Notes 21<br />
7.1 Packing Requirement for Sending the PCB Assembly by post 21<br />
7.2 Short of Spare Parts while Repairing a Speaker system 21<br />
Version 1.0 Page 3 of 21
<strong>Service</strong> <strong>Guide</strong><br />
GHT-V150<br />
Getting Started<br />
Conventions Used in this <strong>Guide</strong><br />
Pay Special Attention: Instructions that are important to remember and may<br />
prevent mistakes.<br />
Caution: Information that, if not followed, may result in damage to the<br />
product.<br />
Safety Precautions<br />
The following precautions should be observed in handling the speaker<br />
described in this guide:<br />
Place the speakers on a flat, level and stable surface.<br />
Do not place the speakers in environments subject to mist, smoke,<br />
vibration, excessive dust, salty or greasy air, or other corrosive gases and<br />
fumes.<br />
Do not drop or jolt the speakers.<br />
Do not allow anything to drop into the subwoofer case through its<br />
ventilator, as it could result in fatal electric shock or fire.<br />
Place the unit far enough from other equipments for good heat dissipation.<br />
Disconnect the AC power cord from the AC outlet before performing any<br />
maintenance on the speakers.<br />
Do not perform any maintenance with wet hand.<br />
Prevent foreign substances, such as water, other liquids or chemical, from<br />
entering the speakers while performing maintenance procedures on the<br />
speakers.<br />
Version 1.0 Page 4 of 21
<strong>Service</strong> <strong>Guide</strong><br />
GHT-V150<br />
Chapter 1. How to Handle Defective Returns<br />
1.1 Overview<br />
Receiving Defective speaker form customers<br />
Verifying problems<br />
proceeding<br />
necessary tests<br />
Function NG<br />
Function NG<br />
Analyzing possible<br />
malfunction causes<br />
Function OK<br />
Deciding & proceeding<br />
the rectification methods<br />
Replace necessary<br />
defective parts<br />
Proceeding tests to<br />
verify if the speaker is<br />
functioning normally<br />
Function OK<br />
Return the speakers with<br />
proper repackaging to<br />
Version 1.0 Page 5 of 21
<strong>Service</strong> <strong>Guide</strong><br />
GHT-V150<br />
1.2 Problems<br />
Item<br />
Problem Description<br />
1.2.1 FL/FR, RL/RR channels no sound<br />
1.2.2 CEN channel no sound<br />
1.2.3 Woofer channel no sound<br />
1.2.4 Woofer no power<br />
Version 1.0 Page 6 of 21
<strong>Service</strong> <strong>Guide</strong><br />
GHT-V150<br />
* Attention<br />
Please follow the numbered sequence marked within parenthesis given in individual<br />
Flow chat, in that this is the best-recommended sequence to rectify the problems.<br />
1.2.1 FL/FR, RL/RR channels no sound<br />
Problem<br />
FL/FR,RL/RR channels no sound<br />
Analyzer and<br />
Identify the Causes<br />
Broken or short circuit<br />
Defective<br />
IC101,IC100,IC301,U2<br />
03,C302<br />
C301,C223,C234,C22<br />
6,C238,Q200,<br />
Speaker cable dis-connect or<br />
speaker damaged<br />
Solutions<br />
Check solder points on<br />
PCB<br />
Check and replace<br />
defective IC or<br />
components<br />
Re-connected speaker cable<br />
or replace defective speakers<br />
Version 1.0 Page 7 of 21
<strong>Service</strong> <strong>Guide</strong><br />
GHT-V150<br />
1.2.2 CEN channel no sound<br />
Problem<br />
CEN channel no sound<br />
Analyzer and<br />
Identify the Causes<br />
Broken or short circuit<br />
Defective<br />
IC101,IC100,IC303,,U<br />
204,C306,C240,C243,<br />
Q200<br />
Speaker cable dis-connect or<br />
speaker damaged<br />
Solutions<br />
Check solder points on<br />
PCB<br />
Check and replace<br />
defective IC or<br />
components<br />
Re-connected speaker cable<br />
or replace defective speakers<br />
1.2.3 Woofer channel no sound<br />
Problem<br />
Woofer channel no sound<br />
Analyzer and<br />
Identify the Causes<br />
Broken or short circuit<br />
Defective<br />
IC302,U201,C304,C30<br />
5,C205,R204,R214<br />
Speaker cable dis-connect or<br />
speaker damaged<br />
Solutions<br />
Check solder points on<br />
PCB<br />
Check and replace<br />
defective IC or<br />
components<br />
Re-connected speaker cable<br />
or replace defective speakers<br />
Version 1.0 Page 8 of 21
<strong>Service</strong> <strong>Guide</strong><br />
GHT-V150<br />
1.2.4 Woofer no power<br />
Problem<br />
Woofer no power<br />
Analyzer and<br />
Identify the Causes<br />
Broken or short circuit<br />
Defective<br />
U100,Y100,C122,C13<br />
7,U101,U200,R202,U2<br />
05,R200,D200<br />
Speaker cable dis-connect or<br />
speaker damaged<br />
Solutions<br />
Check solder points on<br />
PCB<br />
Check and replace<br />
defective IC or<br />
components<br />
Re-connected speaker cable<br />
or replace defective speakers<br />
Version 1.0 Page 9 of 21
<strong>Service</strong> <strong>Guide</strong><br />
GHT-V150<br />
Chapter 2. Specifications<br />
Satellite – Center (AT 1KHZ):<br />
NO Description Unit Specifications<br />
1 Out Power at THD 10% W 10 ± 2<br />
2 Sensitivity mV 320 ± 50<br />
3 Freq Response (Ref:-3dB) Hz 40~20K<br />
4 S/N ratio dB 55<br />
5 Hum & Noise Vol:max mV 5<br />
Satellite – Front (AT 1KHZ):<br />
NO Description Unit Specifications<br />
1 Out Power at THD 10% W 10± 2<br />
2 Sensitivity mV 320 ± 50<br />
3 Freq Response (Ref:-3dB) Hz 40~20K<br />
4 Separation dB 35<br />
5 S/N ratio dB 55<br />
6 Hum & Noise Vol:max mV 5<br />
Satellite – Rear (AT 1KHZ):<br />
NO Description Unit Specifications<br />
1 Out Power at THD 10% W 10 ± 2<br />
2 Sensitivity mV 320 ± 50<br />
3 Freq Response (Ref:-3dB) Hz 40~20K<br />
4 Separation dB 35<br />
5 S/N ratio dB 55<br />
6 Hum & Noise Vol:max mV 5<br />
Version 1.0 Page 10 of 21
<strong>Service</strong> <strong>Guide</strong><br />
GHT-V150<br />
Host (Woofer) (AT 100Hz):<br />
NO Description Unit Specifications<br />
1 Out Power at THD 10% W 50± 5<br />
2 Sensitivity mV 300 ± 50<br />
3 Freq Response (Ref:-3dB) Hz 20~20K<br />
4 S/N ration dB 70<br />
5 Hum & Noise Vol: max mV 10<br />
Version 1.0 Page 11 of 21
<strong>Service</strong> <strong>Guide</strong><br />
GHT-V150<br />
Chapter 3. Block Diagram<br />
5.1CH INPUT RCA JACK<br />
TDA7265<br />
PT2323 5.1CH/AUX INPUT SELECT PT 2258 VOL 4558*3<br />
FL SPEAKER<br />
FR SPEAKER<br />
+<br />
TDA7265<br />
-<br />
C SPEAKER<br />
2.1 AUX CH INPUT RCA JACK<br />
4558<br />
TDA7265<br />
SR SPEAKER<br />
SL SPEAKER<br />
+<br />
2.1 AUX CH INPUT RCA JACK<br />
TDA7294<br />
-<br />
SUB SPEAKER<br />
WOOF LPFSCH<br />
EM78P447<br />
MUE<br />
LED DISPLAY SCH<br />
SDA<br />
SCL<br />
TO DISPLAY LED<br />
KEY STROKE SCH<br />
TO KEYSTROKE<br />
power sch<br />
power sw<br />
power fuse<br />
AC IN<br />
SW-SPST<br />
AC IN<br />
250V 2A<br />
TRANS4<br />
POWER SUPPLY<br />
O/P 23V 2.7A 22V*2 1.4A<br />
Version 1.0 Page 12 of 21
<strong>Service</strong> <strong>Guide</strong><br />
GHT-V150<br />
Chapter 4. Exploded View<br />
Host (Woofer)<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
Version 1.0 Page 13 of 21
<strong>Service</strong> <strong>Guide</strong><br />
GHT-V150<br />
Satellite (center)<br />
Satellite (front & rear)<br />
<br />
Version 1.0 Page 14 of 21
<strong>Service</strong> <strong>Guide</strong><br />
GHT-V150<br />
Chapter 5. Part List<br />
NO DESCRIPTION Qty UNIT Part No<br />
1 KYE-V150/BODY/SATELLITE-FL 1 PC V150-01<br />
2 KYE-V150/BODY/SATELLITE-FR 1 PC V150-02<br />
3 KYE-V150/BODY/SATELLITE-RL 1 PC V150-03<br />
4 KYE-V150/BODY/SATELLITE-RR 1 PC V150-04<br />
5 KYE-V150/BODY/SATELLITE-CEN 1 PC V150-05<br />
6 SPEAKER UNIT 4 OHM/2” 5 PC V150-06<br />
7 PVC, Ø8.5/SATE 10 PC V150-07<br />
8 KYE-V150/BODY/WOOFER/230V-EU 1 PC V150-08<br />
9 SPEAKER UNIT 6.5” 4 OHM 50W 1 PC V150-09<br />
10 PCBA KYE-V150 1 PC V150-10<br />
11 IC TDA7296 1 PC V150-11<br />
12 IC TDA7497 3 PC V150-12<br />
13 IC PT2323 1 PC V150-13<br />
14 IC JRC4558 4 PC V150-14<br />
15 IC PT2258 1 PC V150-15<br />
16 IC EM78P447 1 PC V150-16<br />
17 TRANSFORMER, 230V: 22V*2AC&1.4A; 1 PC V150-17<br />
23VAC&2.7A<br />
18 AUDIO CABLE, 6RCA to 6RCA, KYE-V150 1 PC V150-18<br />
19 AUDIO CABLE, 1ST to 2RCA, KYE-V150 1 PC V150-19<br />
20 CARTON, KYE-V150 2 PC V150-20<br />
21 CUSHION, KYE-V150 1 SET V150-21<br />
22 Round Red type Label (NO CARTON) 1 PC V150-22<br />
23 S/N LABEL (NO CARTON&WOOFEWR) 2 PC V150-23<br />
24 MANUAL KYE-V150 1 PC V150-24<br />
25 PE BAG, KYE-V150 1 PC V150-25<br />
26 PE BAG, KYE-V150 1 PC V150-26<br />
27 PE BAG, POWER CORD, KYE-V150 1 PC V150-27<br />
28 PE BAG, AUDIO CABLE 1 PC V150-28<br />
29 CARDBOARD, ENGLISH, KYE-V150 1 PC V150-29<br />
Version 1.0 Page 15 of 21
<strong>Service</strong> <strong>Guide</strong><br />
GHT-V150<br />
Chapter 6. Schematic Diagram<br />
VCDR-IN<br />
AUXR-IN<br />
AUXL-IN<br />
VCDL-IN<br />
FL IN<br />
FR IN<br />
CT IN<br />
SUB IN<br />
SL IN<br />
SR IN<br />
VCDR-IN<br />
AUXR-IN<br />
AUXL-IN<br />
VCDL-IN<br />
FL IN<br />
FR IN<br />
CT IN<br />
SUB IN<br />
SL IN<br />
SR IN<br />
R101<br />
R102<br />
R100<br />
R103<br />
R104<br />
R105<br />
R106<br />
R107<br />
R108<br />
R109<br />
JK101<br />
6<br />
5<br />
4<br />
3<br />
2<br />
1<br />
JK102<br />
9<br />
8<br />
7<br />
6<br />
5<br />
4<br />
3<br />
2<br />
1<br />
1K<br />
1k<br />
1k<br />
1k<br />
1K<br />
1K<br />
1K<br />
1K<br />
1K<br />
1K<br />
2CH INPUT<br />
5.1CH INPUT<br />
R113 R114R115R116R117R118<br />
R119R120R121R122<br />
100K 100K 100K 100K 100K 100K 100K 100K 100K 100K<br />
C10010uF/50V<br />
C10110uF/50V<br />
C10210uF/50V<br />
C10310uF/50V<br />
C10410uF/50V<br />
C10510uF/50V<br />
C10610uF/50V<br />
C10710uF/50V<br />
C12310uF/50V<br />
C12410uF/50V<br />
+9 V<br />
1<br />
2<br />
3<br />
4<br />
5<br />
6<br />
7<br />
8<br />
9<br />
10<br />
11<br />
MIXO<br />
12<br />
13<br />
14<br />
C125<br />
47uF/25V<br />
L1<br />
L2<br />
L3<br />
L4<br />
FLI<br />
FRI<br />
CTI<br />
SUBI<br />
SLI<br />
SRI<br />
MIXO<br />
VCC<br />
REF<br />
GND<br />
C126<br />
10uF/50V<br />
1<br />
2<br />
3<br />
4<br />
5<br />
6<br />
7<br />
8<br />
CN306<br />
IC101<br />
PT2323<br />
R1<br />
R2<br />
R3<br />
R4<br />
LPFI<br />
LPFO<br />
FLO<br />
FRO<br />
CTO<br />
SUBO<br />
SLO<br />
SRO<br />
SCL<br />
SDA<br />
SR SPOUT<br />
SL SPOUT<br />
CE SPOUT<br />
FL SPOUT<br />
FR SPOUT<br />
28<br />
27<br />
26<br />
25<br />
24<br />
23<br />
22<br />
21<br />
20<br />
19<br />
18<br />
17<br />
16<br />
15<br />
R123<br />
100 R124<br />
100<br />
SDA<br />
SCL<br />
C108<br />
153<br />
R110<br />
22k<br />
R125270<br />
R126270<br />
R127270<br />
R128270<br />
R129270<br />
R130270<br />
R111<br />
22k<br />
C109<br />
273<br />
FL1<br />
FR1<br />
CT1<br />
SUB1<br />
SL1<br />
SR1<br />
MIXO<br />
+9V<br />
FL1<br />
FR1<br />
CT1<br />
SUB1<br />
SL1<br />
SR1<br />
C11010uF/50V<br />
C12710uF/50V<br />
C12810uF/50V<br />
C12910uF/50V<br />
C13010uF/50V<br />
C13110uF/50V<br />
R132R133R134R135R136R137<br />
100K 100K 100K 100K 100K 100K<br />
C11310uF/50V<br />
C11410uF/50V<br />
C11510uF/50V<br />
C11110uF/50V<br />
C11210uF/50V<br />
C13210uF/50V<br />
R138<br />
100<br />
SCL<br />
SDA<br />
1<br />
2<br />
3<br />
4<br />
5<br />
6<br />
7<br />
8<br />
9<br />
10<br />
R140<br />
100<br />
1<br />
2<br />
3<br />
4<br />
5<br />
IC100<br />
PT2258<br />
FLI FLO<br />
FRI FRO<br />
CTI CTO<br />
CODE2 CODE1<br />
DGND VCC<br />
SCL REF<br />
SDA GND<br />
SUBI SUBO<br />
SLI SLO<br />
SRI SRO<br />
CN103<br />
20<br />
19<br />
18<br />
17<br />
16<br />
15<br />
14<br />
13<br />
12<br />
11<br />
9<br />
8<br />
7<br />
6<br />
SCL 5<br />
SDA 4<br />
GND 3<br />
+5V 2<br />
ST-BY 1<br />
C11610uF/50V<br />
C11710uF/50V<br />
C11810uF/50V<br />
C11910uF/50V<br />
C12010uF/50V<br />
C13410uF/50V<br />
CN101<br />
+9V<br />
C121<br />
47uF/25V<br />
GND<br />
GND<br />
GND<br />
SUB OUT<br />
CT OUT<br />
SL OUT<br />
SR OUT<br />
FR OUT<br />
FL OUT<br />
C133<br />
100uF/25V<br />
R141R142R143R144R145R146<br />
100K 100K 100K 100K 100K 100K<br />
5<br />
4<br />
3<br />
2<br />
1<br />
CN102<br />
ST-BY<br />
+5V<br />
GND<br />
GND<br />
+9V<br />
FL OUT<br />
FR OUT<br />
CT OUT<br />
SUB OUT<br />
SL OUT<br />
SR OUT<br />
INPUT&VOLUME CONTROL SCH<br />
Version 1.0 Page 16 of 21
<strong>Service</strong> <strong>Guide</strong><br />
GHT-V150<br />
Chapter 6. Schematic Diagram<br />
PPA<br />
PPB<br />
PPC<br />
PPD<br />
PPE<br />
PPF<br />
PPG<br />
PPDP<br />
D102 DVD<br />
D103 AUX<br />
D104 VCD<br />
D105 5.1CH<br />
D106 FR ONT<br />
D107<br />
REAR<br />
D108<br />
CENTER<br />
PPDP<br />
R131<br />
1K<br />
R139<br />
1K<br />
D109<br />
SUBWOOFER<br />
TRIG3<br />
R165<br />
1K<br />
+5v<br />
C139<br />
100uF/16V<br />
C138<br />
104<br />
+5V<br />
a<br />
b<br />
f<br />
c<br />
g<br />
d<br />
e<br />
DPY<br />
1<br />
2<br />
3<br />
4<br />
5<br />
6<br />
7<br />
a<br />
b<br />
c<br />
d<br />
e<br />
f<br />
g<br />
8 dp<br />
dp<br />
DS100<br />
DPY_7-SEG_DP<br />
a<br />
b<br />
f<br />
c<br />
g<br />
d<br />
e<br />
DPY<br />
1<br />
2<br />
3<br />
4<br />
5<br />
6<br />
7<br />
a<br />
b<br />
c<br />
d<br />
e<br />
f<br />
g<br />
8 dp<br />
dp<br />
DS101<br />
DPY_7-SEG_DP<br />
Q100<br />
9015 Q101<br />
9015<br />
+5V<br />
TRIG1<br />
TRIG2<br />
PPA<br />
PPB<br />
PPC<br />
PPD<br />
PPE<br />
PPF<br />
PPG<br />
Q102<br />
9015<br />
RR166<br />
560<br />
Y100<br />
4MHz<br />
C122<br />
20pF<br />
C137<br />
20pF<br />
C136<br />
1uF/50V<br />
R112<br />
22K<br />
D100<br />
1N4148<br />
X1<br />
ST-BY<br />
SCL<br />
SCA<br />
TRIG1<br />
X1<br />
1<br />
2<br />
3<br />
RE100<br />
REMOTE<br />
R147<br />
47<br />
R149 100<br />
C135<br />
10uF/50V<br />
+5V<br />
+5 V<br />
TRIG3<br />
TRIG2<br />
X2<br />
X2<br />
TCC<br />
1<br />
VDD<br />
2<br />
NC<br />
3<br />
VSS<br />
4<br />
/INT<br />
5<br />
P50<br />
6<br />
P51<br />
7<br />
P52<br />
8<br />
P53<br />
9<br />
P60<br />
10<br />
P61<br />
11<br />
P62<br />
12<br />
P63<br />
13<br />
P64<br />
14<br />
P65<br />
15<br />
P66<br />
16<br />
P67<br />
17<br />
P70<br />
18<br />
P71<br />
19<br />
P72<br />
20<br />
P73<br />
21<br />
P74<br />
22<br />
P75<br />
23<br />
P76<br />
24<br />
P77<br />
25<br />
OSCO<br />
26<br />
OSCI<br />
27<br />
/RESET<br />
28<br />
U100<br />
EM78P447SAP<br />
O/P<br />
G<br />
VDD<br />
D101<br />
IRRX<br />
R158<br />
10K<br />
R159<br />
10K<br />
R160<br />
10K<br />
R161<br />
10K<br />
R162<br />
10K<br />
R150<br />
220 R154<br />
220<br />
R152<br />
220<br />
R151<br />
220<br />
R156<br />
220<br />
R155<br />
220<br />
R153<br />
220 R157<br />
220<br />
S100<br />
POWER<br />
S101<br />
INPUT<br />
S102<br />
MODE<br />
PPG<br />
PPB<br />
PPC<br />
PPD<br />
PPE<br />
PPF<br />
PPA<br />
PPDP<br />
R148<br />
22K<br />
R163<br />
10K<br />
R164<br />
10K<br />
+5V<br />
1<br />
2<br />
3<br />
4<br />
5<br />
CN104<br />
SCL<br />
SDA<br />
ST-BY<br />
GND<br />
+5V<br />
GND<br />
7<br />
VDD<br />
8<br />
GND<br />
2<br />
GND<br />
1<br />
GND<br />
3<br />
GND<br />
4<br />
SDA<br />
5<br />
SCL<br />
6<br />
U101<br />
24C02<br />
+5V<br />
SCL<br />
SCA<br />
24C02<br />
Version 1.0 Page 17 of 21<br />
MCU SCH
<strong>Service</strong> <strong>Guide</strong><br />
GHT-V150<br />
Chapter 6. Schematic Diagram<br />
C308 R301<br />
22uF/16V 15k<br />
R302<br />
33k<br />
C307<br />
100pF<br />
2<br />
3<br />
1<br />
IC301A<br />
MC4558<br />
FR OP OUT<br />
R303<br />
100K<br />
R304<br />
100K<br />
+9V<br />
R305<br />
C309<br />
22uF/16V<br />
R319<br />
100k<br />
R306<br />
15k<br />
R320<br />
100k<br />
6<br />
5<br />
33k<br />
C310<br />
100pF<br />
7<br />
IC301B<br />
MC4558<br />
FL OP OUT<br />
C302<br />
C301<br />
C306<br />
C303<br />
C304<br />
C305<br />
10uF/50V<br />
10uF/50V<br />
10uF/50V<br />
10uF/50V<br />
10uF/50V<br />
10uF/50V<br />
+9V<br />
FL OUT<br />
FR OUT<br />
CT OUT<br />
SUB OUT<br />
SL OUT<br />
SR OUT<br />
SUB OP OUT<br />
C317 R313<br />
22uF/16V 15k<br />
2<br />
3<br />
R314<br />
33k<br />
C318<br />
100pF<br />
1<br />
IC303A<br />
MC4558<br />
CT OP OUT<br />
C312 R307<br />
22uF/16V 15k<br />
R309 100K<br />
2<br />
3<br />
R310<br />
100K +9V<br />
R308<br />
33k<br />
C311<br />
100pF<br />
1<br />
IC302A<br />
MC4558<br />
SR OP OUT<br />
R316<br />
100K<br />
R315<br />
100K +9V<br />
R312<br />
C313<br />
22uF/16V<br />
R317<br />
100k<br />
R311<br />
15k<br />
R318<br />
100k<br />
6<br />
5<br />
33k<br />
C314<br />
100pF<br />
7<br />
IC302B<br />
MC4558<br />
SL OP OUT<br />
+9V<br />
O/P AMP SCH<br />
Version 1.0 Page 18 of 21
<strong>Service</strong> <strong>Guide</strong><br />
GHT-V150<br />
Chapter 6. Schematic Diagram<br />
VCC1<br />
+26V 2.6A<br />
CN202<br />
5<br />
4<br />
3<br />
2<br />
1<br />
CON4<br />
VCC1<br />
VCC1<br />
VCC2<br />
GND<br />
VCC2<br />
VCC1<br />
VCC2<br />
GND<br />
VCC2<br />
4<br />
1<br />
3<br />
D200<br />
RS608<br />
2<br />
CC1<br />
4700uF/35V<br />
+26V<br />
C200<br />
4700uF/35V<br />
R200<br />
47<br />
3<br />
U200<br />
78L09<br />
IN<br />
GND<br />
2<br />
OUT<br />
+9v<br />
1<br />
C201<br />
2200uF/16V<br />
R202<br />
10<br />
3<br />
U205<br />
LM7805<br />
OUT<br />
2<br />
GND<br />
IN<br />
1<br />
+5V<br />
C204<br />
220uF/16V<br />
SUB<br />
+-22V 1.4A<br />
1<br />
D201<br />
KBL02G<br />
4<br />
2<br />
+22V<br />
C209<br />
4700uF/35V<br />
3<br />
C210<br />
4700uF/35V<br />
-22V<br />
R204<br />
22K<br />
+22V<br />
7<br />
13<br />
C207<br />
220uF/35V<br />
C208<br />
104.C<br />
U201<br />
R205<br />
100K<br />
SUB<br />
R206<br />
1k<br />
R201<br />
100K<br />
3<br />
2<br />
+9V<br />
4 8<br />
+<br />
_<br />
U202A<br />
1<br />
AM4558<br />
R211<br />
20k<br />
333.M<br />
C216<br />
R212<br />
5<br />
20k<br />
C215<br />
473.M<br />
6<br />
+<br />
_<br />
SUB<br />
7<br />
U202B<br />
AM4558<br />
C205<br />
4.7uF/50V(NP)<br />
R213<br />
22K<br />
R214<br />
680<br />
C217<br />
22uF/16V<br />
R216<br />
33K<br />
R215<br />
10K<br />
2<br />
3<br />
4<br />
10<br />
9<br />
C218<br />
10uF/50V<br />
C219<br />
10uF/50V<br />
Mute<br />
STBY<br />
1<br />
C220<br />
104.C<br />
8<br />
Thermal<br />
Shut down<br />
15<br />
S/C<br />
Protection<br />
-22V<br />
C221<br />
220uF/35V<br />
14<br />
6<br />
C206<br />
22uF/25V<br />
TDA7296<br />
CN205<br />
WOOF OUT200<br />
1<br />
2<br />
WOOF OUT<br />
WOOF OUT<br />
WOOFER200<br />
R20920k<br />
C211<br />
4.7uF/50V<br />
R208 101<br />
3.3K C213<br />
ST-BY<br />
IN SUB<br />
C212<br />
4.7uF/50V<br />
POWER&SUBWOOFER AMP SCH<br />
Version 1.0 Page 19 of 21
<strong>Service</strong> <strong>Guide</strong><br />
GHT-V150<br />
Chapter 6. Schematic Diagram<br />
+2 6V<br />
26V<br />
ST -BY<br />
R217<br />
10K<br />
R218<br />
15K<br />
Q200<br />
945<br />
R219<br />
100<br />
SB<br />
C223<br />
IN FR<br />
273<br />
C234 273<br />
IN FL<br />
(11)PW_GND<br />
(1)INR<br />
(8)S_GND<br />
(4)PW_GND_C<br />
(5)INL<br />
Vs-c(2)<br />
Vs(13)<br />
OUTR(14)<br />
MUTE2(9)<br />
MUTE1(10)<br />
OUTL(12)<br />
C224<br />
104<br />
C225<br />
104<br />
10K<br />
C236<br />
1UF<br />
26V<br />
C2261000UF/35V<br />
C227<br />
220UF/35V<br />
R220<br />
FR SPOUT<br />
10K R222<br />
C237<br />
1UF 1000UF/35V<br />
FL SPOUT<br />
C238<br />
SB<br />
IN SR<br />
IN SL<br />
IN C<br />
C228<br />
273<br />
C239 273<br />
C240 273<br />
(11)PW_GND<br />
(1)INR<br />
(8)S_GND<br />
(4)PW_GND_C<br />
(5)INL<br />
(6)INC<br />
Vs-c(2)<br />
Vs(13)<br />
OUTR(14)<br />
MUTE2(9)<br />
MUTE1(10)<br />
OUTL(12)<br />
OUTC(3)<br />
C229<br />
104<br />
C230<br />
104<br />
C2311000UF/35V<br />
10K<br />
C232<br />
1UF<br />
C233<br />
220UF/35V<br />
R221<br />
SR SPOUT<br />
10K R223<br />
C242<br />
1UF 1000UF/35V<br />
SL SPOUT<br />
C244<br />
C2431000UF/35V<br />
CE SPOUT<br />
SB<br />
(6)INC<br />
OUTC(3)<br />
(7)SVR<br />
PW _GND(15)<br />
(7)SVR<br />
C235<br />
470UF/25V<br />
PW_GND(15)<br />
U203<br />
TDA7497<br />
C241<br />
470UF/25V<br />
U204<br />
TDA7497<br />
CN201<br />
5<br />
4<br />
3<br />
2<br />
1<br />
ST-BY<br />
+5V<br />
GND<br />
GND<br />
+9V<br />
CN200<br />
9<br />
8<br />
7<br />
6<br />
5<br />
4<br />
3<br />
2<br />
1<br />
GND<br />
GND<br />
GND<br />
IN FL<br />
IN FR<br />
IN SL<br />
IN SR<br />
IN C<br />
IN SUB<br />
CN203<br />
CON8<br />
1<br />
2<br />
3<br />
4<br />
5<br />
6<br />
7<br />
8<br />
FR SPOUT<br />
FL SPOUT<br />
SL SPOUT<br />
SR SPOUT<br />
CE SPOUT<br />
纳 <br />
1/1<br />
FL/FR/SL/SR AMP SCH<br />
Version 1.0 Page 20 of 21
<strong>Service</strong> <strong>Guide</strong><br />
GHT-V150<br />
Chapter 7. Important Notes<br />
7.1 Packing Requirement for Sending the PCB Assembly by Post<br />
PCB assembly is a kind of sophisticated electronic circuit board. Well<br />
packing will be required when sending them by post.<br />
* Some sophisticated IC components are mounted on the PCB assembly,<br />
hence it is necessary to pack each PCB assembly with a separate static<br />
protecting bag, in order to avoid static electricity.<br />
* Reliable external packing is also very important when sending PCB<br />
assembly by post, in that it would avoid unnecessarily lost or damage.<br />
7.2 Short of Spare Parts while Repairing a Speaker System<br />
If you are short of spare parts when you have some speaker systems waiting<br />
to be repaired, it would be recommended to take the necessary parts form<br />
one speaker system, so that you may have the as many speaker systems.<br />
Version 1.0 Page 21 of 21
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