Sharp HT-CN300(S BK) Schematic
HT-CN300
SERVICE MANUAL
No. S7250HTCN300/
HOME CINEMA COMMAND
MODEL HT-CN300(S)
HT-CN300 Home Cinema Command consisting of HT-CN300 (main
unit), CP-CN300F (front speakers), CP-CN300C (center speaker)
and CP-CN300R (surround speakers).
HOME CINEMA COMMAND
MODEL HT-CN300(BK)
HT-CN300 Home Cinema Command consisting of HT-CN300 (main unit),
CP-CN300F (front speakers), CP-CN300C (center speaker) and CP-CN300R
(surround speakers).
• In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
CONTENTS
Page
IMPORTANT SERVICE NOTES (FOR U.S.A. ONLY)....................................................................................................... 2
SPECIFICATIONS ............................................................................................................................................................. 3
NAMES OF PARTS ........................................................................................................................................................... 4
DISASSEMBLY.................................................................................................................................................................. 6
ADJUSTMENT ................................................................................................................................................................... 8
NOTES ON SCHEMATIC DIAGRAM ................................................................................................................................ 9
TYPES OF TRANSISTOR AND LED................................................................................................................................. 9
BLOCK DIAGRAM ........................................................................................................................................................... 10
SCHEMATIC DIAGRAM .................................................................................................................................................. 14
VOLTAGE ........................................................................................................................................................................ 31
WIRING SIDE OF P.W.BOARD....................................................................................................................................... 32
FUNCTION TABLE OF IC................................................................................................................................................ 38
FL DISPLAY..................................................................................................................................................................... 44
REPLACEMENT PARTS LIST/EXPLODED VIEW
PACKING OF THE SET (FOR U.S.A. ONLY)
SHARP CORPORATION
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
HT-CN300
IMPORT ANT SER VICE NOTES (FOR U.S.A. ONLY)
BEFORE RETURNING THE AUDIO PRODUCT
(Fire & Shock Hazard)
Before returning the audio product to the user, perform the
following safety checks.
1. Inspect all lead dress to make certain that leads are not
pinched or that hardware is not lodged between the chassis
and other metal parts in the audio product.
2. Inspect all protective devices such as insulating materials,
cabinet, terminal board, adjustment and compartment covers
or shields, mechanical insulators etc.
3. To be sure that no shock hazard exists, check for leakage
current in the following manner.
* Plug the AC line cord directly into a 120 volt AC outlet.
* Using two clip leads, connect a 1.5 kohm, 10 watt resistor
paralleled by a 0.15 µF capacitor in series with all exposed
metal cabinet parts and a known earth ground, such as
conduit or electrical ground connected to earth ground.
* Use a VTVM or VOM with 1000 ohm per volt, or higher,
sensitivity to measure the AC voltage drop across the
resistor (See diagram).
* Connect the resistor connection to all exposed metal parts
having a return path to the chassis (antenna, metal cabinet,
screw heads, knobs and control shafts, escutcheon, etc.)
and measure the AC voltage drop across the resistor.
VTVM
AC SCALE
1.5 kohms
10 W
0.15 µF
TO EXPOSED
TEST PROBE
METAL PARTS
All check must be repeated with the AC line cord plug connection
reversed.
Any reading of 0.3 volt RMS (this corresponds to 0.2 milliamp.
AC.) or more is excessive and indicates a potential shock
hazard which must be corrected before returning the audio
product to the owner.
CONNECT TO
KNOWN EARTH
GROUND
– 2 –
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
SPECIFICA TIONS
HT-CN300
HT-CN300 (Except for Canada)
General
Power source
Power consumption
Dimensions
Weight
Terminals
AC 120 V, 60 Hz
195 W
Width: 9-1/8" (230 mm)
Height: 14-7/8" (377 mm)
Depth: 15-3/4" (400 mm)
24.3 lbs. (11.0 kg)
Front speakers, Center speaker and Surround speakers:
6 ohms
Monitor output: S-video/video
Video output (Video 1): RCA type
Audio output (Video 1): RCA type (L/R)
Video input (Video 1): RCA type
Audio input (Video 1): RCA type (L/R)
Audio input (Auxiliary): RCA type (L/R)
Video input (Video 2): RCA type
S-video input (DVD): S-terminal
Video input (DVD): RCA type
Audio input (Video 2): RCA type (L/R)
Digital input (DVD): Optical
Digital input (DVD): Coaxial
Amplifier
Power output (FTC)
Rated power output
30 watts minimum RMS per channel into 6 ohms from 200
Hz to 20 kHz, 10 % total harmonic distortion
Front: 30 W + 30 W (10% T.H.D, 1 kHz)
Center: 30 W (10% T.H.D, 1 kHz)
Surround: 30 W + 30 W (10% T.H.D, 1 kHz)
Subwoofer: 30 W (10% T.H.D, 100 Hz)
Tuner
Frequency range
CP-CN300F/CP-CN300C/CP-CN300R (Except for Canada)
Type
Maximum input power
Rated input power
Impedance
Dimensions
Weight
Subwoofer (Except for Canada)
Type
Maximum input power
Rated input power
Impedance
FM: 87.5 - 108 MHz
AM: 530 - 1,720 kHz
Full Range Speaker System (Magnetic shield)
3-1/8" (80 mm) speaker
60 W
30 W
6 ohms
Width: 4-1/8" (104 mm)
Height: 4-3/8" (110 mm)
Depth: 4-7/8" (123 mm)
1.8 lbs. (0.8 kg)/each
Subwoofer System (Magnetic shield)
6-1/4" (160 mm) Woofer
60 W
30 W
6 ohms
HT-CN300 (For Canada)
General
Power source
Power consumption
Dimensions
Weight
Terminals
AC 120 V, 60 Hz
195 W
Width: 230 mm (9-1/8")
Height: 377 mm (14-7/8")
Depth: 400 mm (15-3/4")
11.0 kg (24.3 lbs.)
Front speakers, Centre speaker and Surround speakers:
6 ohms
Monitor output: S-video/video
Video output (Video 1): RCA type
Audio output (Video 1): RCA type (L/R)
Video input (Video 1): RCA type
Audio input (Video 1): RCA type (L/R)
Audio input (Auxiliary): RCA type (L/R)
Video input (Video 2): RCA type
S-video input (DVD): S-terminal
Video input (DVD): RCA type
Audio input (Video 2): RCA type (L/R)
Digital input (DVD): Optical
Digital input (DVD): Coaxial
Amplifier
Rated power output
Front speakers:
RMS: 60 W (30 W + 30 W) (10 % T.H.D., 1 kHz)
Centre speaker:
RMS: 30 W (10 % T.H.D., 1 kHz)
Surround speakers:
RMS: 60 W (30 W + 30 W) (10 % T.H.D., 1 kHz)
Subwoofer:
RMS: 30 W (10 % T.H.D., 100 Hz)
Tuner
Frequency range
CP-CN300F/CP-CN300C/CP-CN300R (For Canada)
Type
Maximum input power
Rated input power
Impedance
Dimensions
Weight
Subwoofer (For Canada)
Type
Maximum input power
Rated input power
Impedance
FM: 87.5 - 108 MHz
AM: 530 - 1,720 kHz
Full Range Speaker System (Magnetic shield)
80 mm (3-1/8") Speaker
60 W
30 W
6 ohms
Width: 104 mm (4-1/8")
Height: 110 mm (4-3/8")
Depth: 123 mm (4-7/8")
0.8 kg (1.8 lbs.)/each
Subwoofer System (Magnetic shield)
160 mm (6-1/4") Woofer
60 W
30 W
6 ohms
Specifications for this model are subject to change without
prior notice.
– 3 –
HT-CN300
HT-CN300
Main unit (with subwoofer)
1. Memory Indicator
2. Timer Play Indicator
3. Sleep Indicator
4. Extra Bass Indicator
5. Digital Theater System Indicator
6. FM Stereo Mode Indicator
7. FM Stereo Receiving Indicator
8. Dolby Pro Logic II Indicator
9. Dolby Virtual Indicator
10. Dolby Digital Indicator
11. Power Indicator
12. Power Button
13. Remote Control Sensor Jack
14. TV Monitor Output Jacks
15. DVD Video Input Jacks
16. Video and Audio Input Jacks (VIDEO 2)
17. Video and Audio Input Jacks (VIDEO 1)
18. Subwoofer
19. AC Power Cord
20. DVD Optical Digital Audio Input Jack
21. DVD Coaxial Digital Audio Input Jack
22. FM/AM Loop Antenna Jack
23. Video and Audio Output Jacks (VIDEO 1)
24. Auxiliary Audio Input Jacks
25. Speaker Terminals
NAMES OF P ARTS
12 345867
13
14
15
16
17
18
Back
11
12
9
10
Front
20
21
22
23
24
Remote control
1. Power Button
2. Operation Buttons for Other Equipment
3. Remote Control Transmitter
4. Sound Mode Select Buttons
5. Dynamic Sound Select Button
6. Remote Control Sensor for Learn Function
7. Speaker Set Up Button
8. Clear Button
9. Learn Indicators
10. Volume Up and Down Buttons
11. DVD Button
12. Video-1 Button
13. Tuner/Band Button
14. Video-2/Auxiliary Button
15. Memory 1/2 Buttons for Other Equipment
16. Label Sealing Area
17. Clock Button
18. Memory Button
19. Timer/Sleep Button
20. Display Button
21. Dimmer Button
22. Extra Bass/Demo Mode Button
23. Equalizer Mode Selector Button
24. Cursor Button
25. Enter Button
26. Learn/Transmit Selector Switch
27. 3.6 V DC Input Jack
28. Memory 1/2 Selector Switch
10
11
12
13
14
15
16
19
25
1
256
34
78 9
17
18
19
20
21
22
23
15
16
24 25
26
27
28
– 4 –
HT-CN300
Remote control sensor
1. Remote Sensor
2. Remote Control Indicator
3. Remote Sensor Connection Plug
HT-CN300
Double-sided tape for remote control sensor:
You can fix the remote control sensor with the supplied tape.
Caution:
Carefully choose where you place the remote control sensor as the tape adhesive
may damage or peel the surface coating when the tape is removed.
Never locate the remote control sensor in an unstable place. Otherwise it may fall.
Note:
Fix the remote control sensor on a flat surface.
CP-CN300F/CP-CN300C/CP-CN300R
1. Full-Range Speaker
2. Angle Adjusting Lever
3. Label indication
Front Speaker (right): Red
Front Speaker (left): White
Center Speaker: Green
Surround Speaker (right): Gray
Surround Speaker (left): Blue
4. Mounting Slot
5. Speaker Terminals
6. Mounting Screw Holes
1
1
2
3
Front Side
2
Speaker cushion:
Attach the cushions to the bottom of the speakers to prevent
them from sliding.
3
Bottom
5
4
6
– 5 –
HT-CN300
DISASSEMBLY
Caution on Disassembly
Follow the below-mentioned notes when disassembling
the unit and reassembling it, to keep it safe and ensure
excellent performance:
1. Be sure to remove the power supply plug from the wall
outlet before starting to disassemble the unit.
2. Take off nylon bands or wire holders where they need to
be removed when disassembling the unit. After servicing
the unit, be sure to rearrange the leads where they were
before disassembling.
3. Take sufficient care on static electricity of integrated
circuits and other circuits when servicing.
HT-CN300
STEP REMOVAL PROCEDURE FIGURE
1 Top Cover B 1. Screw ...................... (A1) x2 6-1
2 LCD Cover 1. Hexagon Screw ...... (B1) x2 6-1
3 Top Cover A/ 1. Screw ...................... (C1) x4 6-2
LCD PWB 2. Flat Cable ............... (C2) x3
3. Screw ...................... (C3) x4
4 Back Cover L/R/ 1. Screw .................... (D1) x25 6-1, 7-1
Rear Panel
5 DSP PWB 1. Screw ...................... (E1) x2 7-2
2. Socket ..................... (E2) x1
3. Flat Cable ............... (E3) x4
4. PWB Holder ............ (E4) x2
6 Subwoofer Stand/ 1. Screw .......................(F1) x4 7-2
PWB Unit 2. Screw .......................(F2) x2
3. Socket ......................(F3) x1
7 Video PWB 1. Screw ...................... (G1) x3 7-3
2. Socket ..................... (G2) x2
8 Audio PWB 1. Screw...................... (H1) x2 7-3
9
AMP. PWB
10 Speaker PWB 1. Screw ...................... (K1) x1 7-3
11 Subwoofer 1. Screw ....................... (L1) x4 7-2
1. Screw ....................... (J1) x6 7-3
2. Socket ...................... (J2) x4
HT-CN300
(A1)x2
ø3x8mm
(D1)x6
ø3x8mm
Back Cover R
(C1)x2
ø4x20mm
Top Cover A
DSP PWB
Top Cover B
Top Cover A
Figure 6-1
(C2)x3
(B1)x2
ø2.5x12mm
LCD Cover
Back Cover L
(C1)x2
ø4x12mm
LCD PWB
(C3)x4
ø3x8mm
– 6 –
Figure 6-2
HT-CN300
Rear Panel
(D1)x19
ø3x8mm
(E1)x2
ø3x8mm
DSP PWB
(E3)x2
DSP PWB
(E2)x1
Subwoofer Box
Figure 7-1
(E3)x2
Push
1 Push1
DSP PWB
Subwoofer
(G1)x3
ø3x8mm
(G2)x1
Tuner PWB
(J2)x1
Tuner
PWB
Video
PWB
(H1)x2
ø3x8mm
(G2)x1
Audio
PWB
(J1)x6
ø3x8mm
(J2)x2
Speaker
PWB
Speaker
PWB
AMP.
PWB
AMP.
(J2)x1
(K1)x1
ø3x8mm
PWB
Figure 7-3
Pull
2
CP-CN300F/CP-CN300C/CP-CN300R
These speakers CP-CN300F/CP-CN300C/CPCN300R is
available in assembles only and may not be disassembled.
PWB
Unit
(F3)x1
(F1)x1
ø4x20mm
(E4)x2
Subwoofer Stand
Figure 7-2
(L1)x4
ø4x12mm
(F1)x3
ø4x20mm
(F2)x2
ø4x16mm
Remote control sensor
This Remote control sensoe is available in assembles only
and may not be disassembled.
– 7 –
HT-CN300
TP302
TP301
T306
VR351
FM MUTE LEVEL
T302
T351
R357
FE301
R381
CNP301
AM/FM
ANTENNA
AM BAND
COVERAGE fL
AM IF
AM TRACKING
fL
TUNER PWB
8
ADJUSTMENT
TUNER SECTION
fL: Low-range frequency
fH: High-range frequency
••
•
AM IF/RF
••
Signal generator: 400 Hz, 30%, AM modulated
Test Stage Frequency Frequency
Display
AM IF 450 kHz 1,720 kHz T351 *1
AM Band — 530 kHz (fL): T306 *2
Coverage 1.3 ± 0.1 V
AM Tracking 990 kHz 990 kHz (fL): T302 *1
*1. Input: Antenna Output: TP302
*2. Input: Antenna Output: TP301
• FM IF
Notes:
1: Description of the "FM IF Adjustment" is not carried on this
Manual. It is because the IF coil in the FM front end section
has been best adjusted in the factory so that its further
adjustment is not needed at the field. When replacing the
FM front end assembly, no adjustment is needed either.
2: The parts in the FM front end section are prepared in a
complete unit, so you can't obtain each part individually.
Setting/
Adjusting
Parts
Instrument
Connection
OSD SECTION
1: Connect all cables.
2: Power ON
3: Video input (DVD IN or VIDEO 1-IN or VIDEO 2-IN) :NTSC
Signal.
4: Adjust Vfc with rotated of TC432. Vfc range : 2.65 V - 2.75V
(Chick with DC voltmeter, connect (+) of DC voltmeter to pin
26 of IC401, connect (-) of DC voltmeter to pin 2 of
CNP431).
Figure 8-1 TUNER ADJUSTMENT POINTS
VIDEO PWB
CNP431
TC432
26
IC401
Vcf
(2.65 V - 2.75 V)
Figure 8-2 OSD. ADJUSTMENT POINTS
C453
R522
GND
– 8 –
NOTES ON SCHEMATIC DIAGRAM
• Resistor:
To differentiate the units of resistors, such symbol as K and
M are used: the symbol K means 1000 ohm and the symbol
M means 1000 kohm and the resistor without any symbol is
ohm-type resistor. Besides, the one with “Fusible” is a fuse
type.
• Capacitor:
To indicate the unit of capacitor, a symbol P is used: this
symbol P means pico-farad and the unit of the capacitor
without such a symbol is microfarad. As to electrolytic
capacitor, the expression “capacitance/withstand voltage”
is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene type
• Schematic diagram and Wiring Side of P.W.Board for this
model are subject to change for improvement without prior
notice.
HT-CN300
• The indicated voltage in each section is the one measured
by Digital Multimeter between such a section and the chassis with no signal given.
1. In the tuner section,
indicates AM
indicates FM stereo
2. In the power section, a tape is being played back.
• Parts marked with “ 1 ” ( ) are important for
maintaining the safety of the set. Be sure to replace these
parts with specified ones for maintaining the safety and
performance of the set.
REF. NO DESCRIPTION POSITION
SW678 POWER ON—OFF
FRONT
VIEW
E C B
(S) (G) (D)
(1) (2) (3)
KRC105 M
KRC107 M
KTA1266 GR
KTA1271 Y
KTA1274 Y
KTC3198 GR
KTC3199 GR
KTC3203 Y
2SB1565 F
2SC2878 B
2SD1898
TYPES OF TRANSISTOR AND LED
FRONT
VIEW
B C E
KTC2026 KRA107 S
B
(3)
TOP
VIEW
E
(1)
KRC107 S
C
(2)
FRONT
VIEW
333ID213
EL204GT
EL204HT
– 9 –
HT-CN300
-
V
V
F
_
-
-
+
+
+
+
TV
MONITOR
OUT
DVD IN
VTR2 IN
VIDEO
VTR1 IN
VIDEO
VTR1 OUT
VIDEO
VTR2 IN
AUDIO
AM FM
AM TRACKING
T302 T306
J420
J430
J550
CNP301
8
FE301
FM FRONTEND
6 7 2 5 4 3
VCC
AM BAND
COVERAGE
+B3
SWITCHING
5
10
NJM2279D
SWITCH
3
12
1
X352
VT
4.5 MHz
20 1 22 15 16
IC302
LC72131
PLL(TUNER)
FM
Q416
+B4
8
IC405
VIDEO
14
-B2
450 KHz
CF302
OSC
VIDEO DRIVER
12
1
3
5
AM MIX
1232 4 5 9 8 17 13
AM OSC IN
AM RF IN
21 7 18 16 12 14 15
7 9 10 21
IC404
TK15406M
IC404
TK15406M
Q416
MUTE
+B4
8
IC402
NJM2279D
VIDEO
SWITCH
14
-B2
CF303
CF303
IC303
LA1832S
FM IF DET ./FM MPX./AM IF
STEREO
11
FM/AM
MO/ST
10
FM/AM
OUT
AM IF
3 4 5 6
CE0
DATA
16
CV OUT
18
CV IN
10.7 MHz
CF303
GND
FM+B
FM DET
MPX IN FM/AM R L
DO
CLK
17
+B4
30
2
IC401
LC74763
OSD IC
OSD CS
DATA
CLK
3
8
9
10
X531
456 KHz
VCO
MO/ST
X437
14.32 MHz
+B3
+B2
M
+B3
-B2
-B3
+B4
+B5
VTR1 IN
AUDIO
VTR1 OUT
AUDIO
VIDEO/AUX IN
AUDIO
VTR2 IN
VTR1 IN
VTR1 OUT
VIDEO/AUX IN
TUNER L/R
DSP SECTION
Figure 10 BLOCK DIAGRAM (1/4)
– 10 –
SURROUND L /R
CENTER/SUBWOOFER
MAIN L/R
+B6
+B7
FL690
FL DISPLAY
HT-CN300
12 3534
114 2413 3225
12
VF1 VF2
Q691
56
17
18
8
9
20
19
OSD CS
CLK
DATA
CEO
CE1
CE2
DO
1 163446
+B7
100
93
SYSTEM MICROCOMPUTER
RESET KEY_O
10 11 12
Q682
IC602
8091 7178
92 79
IC601
UPD780206
REMOCON
33 39
X611
4.1943MHz
+B7
20ATT
Q210
Q220
20ATT
Q240
Q230
10
IC201
13
POWER AMP
8
LM4766
15
2
+B1
20ATT
Q240
Q230
IC202
13
POWER AMP
8
LM4766
15
2
5
L
1
3
R
4
-B1
D101
IC203
13
POWER AMP
8
LM4766
2
10
5
L
1
3
R
4
F101
8A/125V
10
15
40
25
13
5
C
1
3
W
4
MAIN POWER
TRANSFORMER
RY250
T100
IC10
REMOTE SENSOR
12
SW678
+B2
RY230
+B2
RY210
+B2
3
FAN MOTOR
Q202
DRIVER
+B7
SUBWOOFER
J201
CENTER
SURROUND
MAIN
SPEAKER TERMINAL
+B6
M200
M
FAN MOTOR
+B2
+B3
-B2
-B3
+B4
+B5
+B6
+B7
M_12V
+9V
-5V
-9V
+5V
+3V3
FANB
-VP
VF1
VF2
+5V
IC103
BA033T
VOLTAGE
REGULATOR
Q150
Q132
IC501
KTA7805AP1
CONSTANT VOLTAGE
REGULATOR
F102
8A/125V
D114
F111
1.25A/125V
F112
1.25A/125V
D123
F121
800mA/125V
D124
D112
Q112Q113
D111
D113
D121
D122
D131
D522
D524
D525
D523
T501
SUB POWER TRANSFORMER
Figure 11 BLOCK DIAGRAM (2/4)
– 11 –
RY511
F511
4A/125V
L511
LINE
FILTER
AC POWER
SUPPLY CORD
AC 120 V/60 Hz
HT-CN300
SDA/CDTI
K
1
Q
Q
Q
Q
IC701
TVHC574T
LATCH
1
OE
2
D0
3
D1
4
D2
5
D3
6
D4
7
D5
8
D6
9
D7
10
GND
A0
19
A1
18
A2
17
A3
16
A4
15
A5
14
A6
13
A7
3
A8
2
A9
31
A10
1
A11
12
A12
4
A13
A14
5
A15
11
A16
10
A17
6
DISPLAY SECTION
20
VCC
19
O0
18
O1
17
O2
16
O3
15
O4
14
O5
13
O6
12
O7
CK
11
IC703
MX27L212
EPROM
GND
FROM
2120
O0
22
O1
23
O2
25
O3
26
O4
27
O5
28
O6
29
O7
32
OE
30
CE
8
VCC
9
VPP
24
IX0489A
SYSTEM
MICROCOMPUTER
IC702
TVHC574T
LATCH
1
OE
VCC
2
D0
3
D1
4
D2
5
D3
6
D4
7
D5
8
D6
9
D7
10
GND
IC710
20
19
O0
18
O1
17
O2
16
O3
15
O4
14
O5
13
O6
12
O7
CK
11
IC704
74HC07AF
BUFFER AMP.
FLD_SDATA
FLD_SCK
2341 202223 25262724 78
SPDIF COAX IN
8
D7
9
D6
10
D5
11
D4
14
D3
15
D2
16
D1
17
D0
RD
4
EXTMEM
21
RESET
36 18 19 20
2
1
65
474548
DSP_UC16
ROM
DSP_UC15
DSP_UC17
FLD_RESET
FLD_CS
RXIN
STD_LED
DD_LED
CON707
CS
SCDOUT
INTREQ
SCDIN
6
3
6
8
45
39 38 37 36 35
DSP_RESET
DSP_CS
DSP_SCLK
DSP_SCOUT
AAC_LED
DTS_LED
DPL_LED
VIR_LED
IC709
GP1F32R
DIGITAL IN
GND
VOUT
IC706
CS493292
DSP
VD1
123
12
+2V5
+B5B
109
VCC
GND
131211
DSP_SCDIN
C_SP_RLY
S_MUTE
POWER
S_SP_RLY
W_SP_RLY
13
72
8.38 MHz
1
VCC
2
3
TC7WU04U
1
VD3
VD2
+3V3
14
7
SCL
SDA
15
XL1
INVERTER
3
DGND1
+B4A
+5V
IC721
2
3Y1A
GND
VCC
167
+B5A
+3V3
MCLK
44
SCLK
LRCLK
AUDAT0
AUDAT1
AUDAT2
SCLKN1
AGND
DGND3
352
24
43
42
41
40
39
25
26
27
28
22
30
XMT958
LRCLKN1
SDATAN2
SCLKN22
SDATAN1
SDATAN1
DGND2
13
IC707
TC7WU04U
DUAL2-INPUT
NAND GATE
+B5
29
30
82F_SP_RLY
81
80
79
IC722
TC74153
MULTIPLEXER
1I1
6
1I0
5
S0
14
3
1A
1
XL1
12.288 MHz
7
1Y
GND
VCC
7
16
+3V3
7
MCKO
8
LRCK
9
BICK
10
STDO
11
SDTI1
12
SDTI2
SDTI3
11
XTI/EXTCL
2
3Y
VCC
8
GND
4
1Y
3A
7
6
+B7A
+3V3
+B5A
+3V3
SWITCHING
+B4A
SWITCHING
+B5A
37
RX4
+B5
+3V3
+B3A
+8V
+5V
Figure 12 BLOCK DIAGRAM (3/4)
– 12 –
FROM AUDIO SECTION
HT-CN300
41
37
RX2
RX4
KO
CK
CK
DO
TI1
TI2
TI3
I/EXTCLK
+B5
+3V3
7A
V3
B3A
8V
V3
ITCHING
B4A +B4
5V +5V
ITCHING
AK4586VQ
ADC/DAC/DIR
CONVERTER
SDA/CDTI
SCL/CCLK
+B7
+5V
Q703
+B3
+9V
Q704
+B5B5A
Q701
+3V3
Q721
IC708
DVDD1
TVDD2
35 22 34
PVDD
+B4 +5V
ADD
23
VREFH
4213617 18
+B5B
+2V5
ROUT1
LOUT1
ROUT2
LOUT2
ROUT3
LOUT3
DVSS1
PVSS
RIN
LIN
AVSS
REGULATOR
33
32
31
30
29
28
27
26
IC705
PQ25EZ
VOLTAGE
IC718
NJM4580M
OPE AMP.
IC716
NJM4580M
OPE AMP.
+B5
+3V3
-B3
+B3A
+8V
8
4
-9V
+B3A
+B3A
-9V
-B3
+8V
-9V
-B3
+8V
-9V
-B3
4
8
4
8
4
3
5
+8V
+B3A
8
1
7
NJM4580M
OPE AMP.
1
7
NJM4580M
OPE AMP.
1
7
ANALOG IN Lch
ANALOG IN Rch
FRONT Lch
FRONT Rch
IC715
SURROUND Lch
SURROUND Rch
IC711
CENTER
WOOFER
1
7
3
5
3
5
3
5
VCR1 OUT
7
18
12
13
3
12
13
3
12
13
3
VCR1 IN
VCR2 IN
IC720
LC75341
AUDIO
PROCESSOR
23
+8V
B3A
LC75341
AUDIO
PROCESSOR
23
+8V
B3A
LC75341
AUDIO
PROCESSOR
23
B3A
+8V
VIDEO/AUX IN
15 161011141213 9
IC713
IC712
TUNER
CLK
24
CLK
CE
24
CLK
24
2
2
CE
21
4
DI
CE
1
21
4
DI
1
TO POWER AMP
SECTION
21
4
DI
2
1
Figure 13 BLOCK DIAGRAM (4/4)
– 13 –
HT-CN300
T
AMP. PWB-B3 (1/2)
FM SIGNAL
A
PROTECT
FAN_CONT
POW_LEVEL
22K THERMO
C263
0.001
B
R140
100K
R141
100K
C
R271
2.2K
R270
820
R259
R258
820
0.001
2.2K
C254
R272
100
B
B
R260
C
E
C
E
100
Q260
2SC2878 B
Q250
2SC2878 B
C264
1/50
(N.P.)
C255
1/50
(N.P.)
R261
22K
R273
22K
C265
22/35
(N.P.)
R274 1K
R275 270
R276 22K
R262 1K
R263 220
R264 22K
C256
22/35
IC203
(N.P.)
LM4766T
POWER AMP.
5
2
15
4
10
VEE
GNDA
GNDB
VCCB
VCCA
+INA
8
-INA
7
+INB
13
-INB
12
MuteA
VEE
VccB
MuteB
VEE
GNDA
GNDB
MUTEB6MUTEA
11
OUTA
3
1
OUTB
NC2
NC1
9
14
R282 10K
TERMINAL PWB-B5
IC202
VEE
VEE
2
VCCA
MuteA
VccB
MuteB
5
GNDA
GNDA
GNDB
MUTEB
MUTEA
6
11
R291 10K
LM4766
POWER
4
15
10
VEE
VCCB
GNDB
OUTA
OUTB
NC1
14
AMP.
3
1
NC2
9
D
E
R142
100K
R143
100K
R247
2.2K
C232
0.001
R235
2.2K
C241
0.001
R246
820
R234
0.22
R237 22K
0.22
C236
4.7
C243
22/35
(N.P.)
C234
22/35
R249
22K
R250
1K
R251 220
R252 22K
R238 1K
R239 220
R240
22K
8
+INA
-INA
7
+INB
13
12
-INB
C
Q240
B
2SC2878 B
E
R248
100
C242
1/50
(N.P.)
C
Q230
B
2SC2878 B
E
C233
R236
1/50
100
820
(N.P.)
CNP203
CNS204
BI204
1
2
3
4
5
1
6
2
7
3
8
4
5
6
7
8
C206
C245
0.22
0.22
R253
C207
4.7
R241
C170
100/10
F
FW12
FL_PRIOUT
A_GND
FR_PRIOUT
SR_PRIOUT
A_GND
SL_PRIOUT
CT_PRIOUT
G
CNP711
DSP PWB
P23 12 - F
A_GND
SW_PRIOUT
A_GND
F_RLY
S_RLY
C_RLY
TO
W_RLY
-20DBATT
FAN_CONT
THERMO
PROTECT
POW_LEVEL
CNP122
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
19
R144
100K
R145
100K
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 9.
1
23456
Figure 14 SCHEMATIC DIAGRAM (1/17)
C219
0.001
R223
2.2K
R222
820
C210
0.001
R211
2.2K
R210
820
D272 DS1SS133
D251 DS1SS133
D252 DS1SS133
– 14 –
C
B
E
C
B
E
Q220
2SC2878 B
R224
100
Q210
2SC2878 B
R212
100
C220
1/50
(N.P.)
C211
1/50
R225
22K
R213
22K
Q271
KTC3199 GR
C221
22/35
(N.P.)
C212
22/35
(N.P.)
C
B
E
POWER AMP.
R226 1K
R227 220
R228 22K
R214
R215 220
R216 22K
Q270
KTC3199 GR
EBC
IC201
LM4766T
8
7
1K
13
12
+INA
-INA
+INB
-INB
C272
47/50
2
VCCA
MuteA
VEE
VccB
MuteB
VEE
5
GNDA10GNDB
GNDA
GNDB
MUTEB
6
11
MUTEA
15
4
VEE
VCCB
OUTA
OUTB
NC19NC2
14
R290 10K
R168
56K
3
1
HT-CN300
IC202
M4766T
POWER
AMP.
D201
DS1SS133
Q200
KRC107 M
2
1
M200
FAN MOTOR
1
2
M
CNS205
TO
AMP. PWB (2/2)
P24 1 - A
C203
47/50
3
Q203
2SB1565 F
CNP205
1
2
4
5
6
7
8
FANB
FANGND
+B1
-B1
PGND
M_12VA
PGND_A
R208 10
3
C204
100/10
R299
1K
R200
820K
Z201
DZ3.9BSB
R209 22K
D200
DS1SS133
E
C
Q204
KTA1271 Y
B
Z200
DZ5.1BSB
R207 10
R201 1K
R202
220K
R203 2.7K
C200
47/10
R171
10K
DS1SS133
R170
8.2K
B
D170
C
E
Q201
KTC3203 Y
R204
470K
KRC107 M
Q170
B
C201
47/16
C
E
B
DS1SS133
C
KTC3199 GR
E
D171
Q202
DZ6.2BSB
R205
15(1W)
R172
3.9K
Z202
D172
DS1SS133
1
2
OUTA
OUTB
R278
3
0.22
0.22
0.22
C202
C267
0.22
C205
C258
0.22
1
NC2
9
C208
C223
0.22
C209
C214
0.22
0.22
10K
CON201
2
1
SUBWOOFER
10K
R231 10K
R219 10K
R242 10K
R266 10K
J201
SPEAKER TERMINAL
FR_GND
FR
SR_GND
SR
CT_GND
CT
FL_GND
FL
SL_GND
SL
R162
R163
56K
R165
56K
R164
56K
R166
56K
R167
56K
56K
R277 10
R176 10
R175 10
R265 10
R180 10
R297
1K
Q255
KRC105 M
R295
1K
KRC105 M
KRC105 M
R218 10
R229 10
R181 10
E
B
E
B
Q235
R293
1K
B
Q215
C
C
E
C
RY250
D250
DS1SS133
RY230
D230
DS1SS133
RY210
D210
DS1SS133
CON210
R254 10K
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
CON211
SPEAKER PWB-B6
7
8 9 10 11 12
Figure 15 SCHEMATIC DIAGRAM (2/17)
– 15 –
HT-CN300
SMUTE(NO USE)
P3
C
D
Y
C
A
B
C
FW7
AC_RLY
D_GND
FUNC_DVD
VREC_MUTE
CLK
V_SW1
DATA
V_SW2
V_MUTE
D
E
OSD_CS1
CON703
DSP PWB
P20 1 - G
P1023P1124P1225P1326P1427P1528P1629P1730P1831P1932P2034F235F1
C623
47/50
R623
12K
Z621
DZ6.2BSB
US5V_1
C625
0.022
S5V_1
C624
0.022
CNP670
1
1
2
3
4
5
6
7
8
9
10
10
TO
R693
33
C693
100/10
R621
R622
47
47
C692
1/50
R654 47K
R653 47K
R652 47K
R651 47K
R650 47K
R649 47K
R648 47K
R647 47K
R646 47K
R645 47K
R644 47K
R643 47K
R642 47K
R641 47K
R640 47K
R639 47K
R685
10K
R686
10K
R665 1K
FUNC_TUNER
R662 1K
R661 1K
R660 1K
R659 1K
R658 1K
R657 1K
R656 1K
R655 1K
80
P12
79
VLOAD
78
P13
77
P14
76
P15
75
P16
74
P17
73
P18
72
P19
71
P20
70
F_SP_RLY
69
C_SP_RLY
68
S_SP_RLY
67
W_SP_RLY
66
AC_RLY
65
LMUTE
64
NO_USE3
63
FUNC_TUNER
62
FUNC_DVD
61
V_REC_MUTE
60
V_SW1
59
V_SW2
58
NTSC/PAL
57
OSD_CS2
56
OSD_CS1
55
OSD_RST
54
AAC/MPEG_LED
53
DPL_LED
52
VIR_LED
51
DTS_LED
V_MUTE
81
83P984P885P786P687P588
P1182P10
MICRO
17P518P619P720P821P922
P4
I
UP
S
EL204GT
F
CNP701
TO
DSP PWB
P20 1 - E
FW6
DD_LED
DSP_POWER_IN
STD_LED
DSP_SMUTE_IN
DTS_LED
G
REM_ACK_LED
VIR_LED
REMCON
DPL_LED
DSP_RST
AAC/MPEG_LED
DSP_RX_IN
DSP_STAND_BY
FLD_SDATA
L_MUTE
NC
VF2
FLD_SCK
-VP
FLD_CS
VF1
CCB_CE1
SW_5V
CCB_CE0
UN_SW_5V
CLK
D_GND
DATA
CCB_CE2
H
CNP640
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
NC
17
18
19
20
21
22
23
24
25
26
27
28
29
29
RED
R699 1.5K
R698 300
LED699
LE204HT
GREEN
LED698
• NOTES ON SCHEMATIC DIAGRAM can be found on page 9.
1
23456
Figure 16 SCHEMATIC DIAGRAM (3/17)
– 16 –
C660
0.022
111213141516171819
GND
10
DD_LED
STD_LED
50
20
VCC
123456789
DSP_POWER_IN
48
49
POWER_ON_LED
STAND_BY_LED
DSP_RST
VDD347DSP_SMUTE_IN
43
44
45
46
IC604
VHC541AF
BUFFER AMP.
HT-CN300
29
P18
P1023P1124P1225P1326P1427P1528P16
P17
22
83
P984P885P786P687P588P489P390P291P192G993G894G795G696G597G498G399G2
G610G711G812G913P114P215P316P417P518P619P720P821P9
IC601
UPD780206
SYSTEM
MICROCOMPUTER
FL690 DISPLAY
1F42F34G15G26G37G48G59
RDS_RDCL/KARA_LAC
RDS_RDDA
KRC107 M
R692
100K
100
G1
VDD1
RDS_READY
/MIC_IN
RDS_RESET
-20_ATT
FAN_CONT
CCB_CE0
CCB_CE1
RESET
VPP/IC
VDD2
DATA
CCB_DO
CCB_CE2
FLD_CS
FLD_SCK
NO_USE1
FLD_SDATA
AVSS
POWER_LEVEL
PROTECT
THERMO
TUN_SM
DIST_1
R690
3.3
C690
B
1
R602 1K
2
R603 1K
3
R604 1K
4
R605 1K
5
R606 1K
6
R607 1K
7
R608 1K
8
R609 1K
9
10
11
12
13
14
R615 1K
15
16
R617 1K
17
R618 1K
18
R619 1K
19
R620 1K
20
21
22
23
24
25
R626 1K
26
27
28
29
30
1/50
R691
1K
C600
0.022
R627 1K
R628 1K
R629 1K
R630 1K
C601
1000/6.3
R610 1K
C611
12P(CH)
X611
C612
18P(CH)
R614 10K
R672 10K
R673 10K
R674 10K
R675 10K
CNP601
14
13
12
11
10
FW8
14
-20DBATT
F_RLY
FAN_CONT
C_RLY
9
8
7
6
5
4
3
2
1
CCB_CE0
S_RLY
CLK
W_RLY
DATA
THERMO
CCB_DO
PROTECT
D_GND
POWER_LEVEL
1
CNP708
DSP PWB
P21 12 - F
TO
Q691
C
E
X2
X1
XT2
SPN
CLK
VDD347DSP_SMUTE_IN
DSP_POWER_IN
46
48
IC604
DSP_RST
45
40
42
43
44
VSS41REM_ACK_LED
SMUTE(NO_USE)
POWER_ON_LED
STAND_BY_LED
R635 1K
R667 3.3K
VHC541AF
BUFFER AMP.
DSP_RX-IN_OUT
DSP_STAND_BY
REMCON
37
38
39
R638 1.5K
R637 1.5K
R666 3.3K
2
1
SYS_STOP
36
SW678
R633 1KR678 10K
POWER
DIST_032KEY_133KEY_034AVDD35AVREF
31
R677 10K
R676 10K
R636 10K
IC603
74VHC541AF
C622
4.7/50
111213141516171819
C620
0.022
GND
BUFFER AMP.
10
D681
DS1SS133
D684
D683
DS1SS133
R683
47K
Q682
KRC107 M
C
E
1N4004S
B
D682
DS1SS133
R682
100K
C682
3.3/50
C681
REGULATOR
0.022
BACK-UP
20
VCC
123456789
UN_SW_5V
SW_5V
D685
DS1SS133
C686
0.1/50
C685
0.022
D680
DS1SS133
R680
4.7K
IC602
KA7042AP
VOLTAGE
1
3
2
C680
10/50
DISPLAY PWB-B1
7
8 9 10 11 12
Figure 17 SCHEMATIC DIAGRAM (4/17)
– 17 –
Loading...