Sharp HT-CN300H (serv.man7) Service Manual ▷ View online
– 5 –
HT-CN300H
1. Full-Range Speaker
2. Angle Adjusting Lever
3. Label indication
2. Angle Adjusting Lever
3. Label indication
4. Mounting Slot
5. Speaker Terminals
6. Mounting Screw Holes
5. Speaker Terminals
6. Mounting Screw Holes
Remote control sensor
1. Remote Sensor
2. Remote Control Indicator
3. Remote Sensor Connection Plug
2. Remote Control Indicator
3. Remote Sensor Connection Plug
Caution:
Carefully choose where you place the remote control sensor as the adhesive tape
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.
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.
1
1
3
2
2
5
Bottom
Front
Side
6
4
3
Front Speaker (right): Red
Front Speaker (left): White
Centre Speaker: Green
Surround Speaker (right): Grey
Surround Speaker (left): Blue
Front Speaker (left): White
Centre Speaker: Green
Surround Speaker (right): Grey
Surround Speaker (left): Blue
Speaker cushion:
Attach the cushions to the bottom of the speakers to prevent
them from sliding.
them from sliding.
Double-sided tape for remote control sensor:
You can fix the remote control sensor with the supplied tape.
HT-CN300H
CP-CN300HF/CP-CN300HC/CP-CN300HR
HT-CN300H
– 6 –
Top Cover A
LCD Cover
Top Cover B
Back Cover R
Rear Panel
Back Cover L
(A1)x2
ø3x8mm
ø3x8mm
(B1)x2
ø2.5x12mm
ø2.5x12mm
(D1)x6
ø3x8mm
ø3x8mm
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) x5
3. Screw ...................... (C3) x5
4
Back Cover L/R/
1. Screw ...................... (D1) x6
6-1
Rear Panel
2. Screw .................... (D2) x17
7-1
5
DSP PWB
1. Screw ...................... (E1) x2
7-2
2. Socket ..................... (E2) x1
3. Flat Cable ............... (E3) x4
4. PWB Holder ............ (E4) x2
3. Flat Cable ............... (E3) x4
4. PWB Holder ............ (E4) x2
6
Subwoofer Stand/ 1. Screw ....................... (F1) x6
7-2
PWB Unit
2. Socket ...................... (F2) 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
1. Screw ....................... (J1) x7
7-3
2. Socket ...................... (J2) x4
10
Speaker PWB
1. Screw ...................... (K1) x1
7-3
11
Subwoofer
1. Screw ....................... (L1) x4
7-2
DISASSEMBLY
Figure 6-2
STEP
REMOVAL
PROCEDURE
FIGURE
Figure 6-1
HT-CN300H
HT-CN300H
DSP PWB
LCD PWB
Top Cover A
(C3)x5
ø3x8mm
ø3x8mm
(C1)x2
ø4x16mm
ø4x16mm
(C1)x2
ø4x20mm
ø4x20mm
(C2)x3
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
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.
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.
– 7 –
HT-CN300H
Figure 7-2
Figure 7-3
Figure 7-1
DSP PWB
Rear Panel
Subwoofer Box
(D2)x17
ø3x8mm
ø3x8mm
DSP PWB
DSP PWB
Push
Pull
(E3)x2
PWB
Unit
Unit
(E3)x2
(E4)x2
(E2)x1
(E1)x2
ø3x8mm
ø3x8mm
1
Push
1
2
(F1)x2
ø4x16mm
ø4x16mm
(L1)x4
ø4x12mm
ø4x12mm
Subwoofer Stand
Subwoofer
(F1)x2
ø4x25mm
ø4x25mm
(F1)x1
ø4x20mm
ø4x20mm
(F1)x1
ø4x20mm
ø4x20mm
(F2)x1
(G1)x2
ø3x10mm
ø3x10mm
(G1)x1
ø3x8mm
ø3x8mm
(G2)x1
(G2)x1 (J2)x2
(H1)x2
ø3x10mm
ø3x10mm
(J1)x1
ø3x10mm
ø3x10mm
(K1)x1
ø3x8mm
(J1)x6
ø3x8mm
ø3x8mm
(J2)x1
Tuner
PWB
PWB
Tuner PWB
(J2)x1
AMP.
PWB
PWB
AMP.
PWB
PWB
Speaker
PWB
PWB
Audio
PWB
PWB
Video
PWB
PWB
Speaker
PWB
PWB
CP-CN300HF/CP-CN300HC/CP-CN300HR
These speakers CP-CN300HF/CP-CN300HC/CPCN300HR
is available in assembles only and may not be disassembled.
is available in assembles only and may not be disassembled.
Remote control sensor
This Remote control sensor is available in assembles only and
may not be disassembled.
may not be disassembled.
HT-CN300H
– 8 –
Test Stage
Frequency
Frequency
Display
Setting/
Adjusting
Parts
Instrument
Connection
•••••
AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
*1. Input: Antenna
Output: TP302
*2. Input: Antenna
Output: TP301
TUNER SECTION
fL: Low-range frequency
fH: High-range frequency
fH: High-range frequency
AM IF
450 kHz
1,620 kHz
T351
*1
AM Band
—
522 kHz
(fL): T306
*2
Coverage
1.4
±
0.1 V
AM Tracking 990 kHz
990 kHz
(fL): T302
*1
Figure 8-1 TUNER ADJUSTMENT POINTS
ADJUSTMENT
• FM IF
Notes:
1: Description of the "FM IF Adjustment" is not carried on this
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.
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.
OSD SECTION
1: Connect all cables.
2: Power ON
3: Video input (DVD IN or VIDEO 1-IN or VIDEO 2-IN) :PAL
2: Power ON
3: Video input (DVD IN or VIDEO 1-IN or VIDEO 2-IN) :PAL
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).
26 of IC401, connect (-) of DC voltmeter to pin 2 of
CNP431).
VIDEO PWB
IC401
26
Vcf
(2.65 V - 2.75 V)
TC432
C453
GND
R522
CNP431
Figure 8-2 OSD. ADJUSTMENT POINTS
TP302
TP301
T306
VR351
FM MUTE LEVEL
T302
T351
R357
FE301
R381
CNP301
AM LOOP
ANTENNA
AM BAND
COVERAGE fL
COVERAGE fL
L354
AM IF
AM TRACKING
fL
fL
TUNER PWB
8
SO301
FM ANTENNA
TERMINAL
Click on the first or last page to see other HT-CN300H (serv.man7) service manuals if exist.