Sharp HT-CN300H (serv.man4) Service Manual ▷ View online
– 37 –
HT-CN300H
Figure 37 WIRING SIDE OF P.W.BOARD (6/6)
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C728
R782
C803
R801
R803
R956
R957
R958
R959
R934
R935
R987
R987
R936
R915
R914
R911
R913
R907
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DSP PWB-A1(BOTTOM VIEW)
IC701
IC702
IC703
D708
D709
C738
L714
R927
R745
C739
D705
Q702
Q721
Q701
R731
D704
R951 R937
R923
R924
C725
R928
R704
C707
R716
R715
R714
R713
C906
R949
R930
R950
R932
R931
R929
IC710
IC704
C736
C760
C762
D702
D703
C731
R735
R701
R705
R706
R707
R708
R709
R710
R711
R712
C724
Z705
IC721
R740
C991
C992
R991
R947
R990
C815
C916
R794
R906 C903
C905
C902
Q703
L903
R739
R729
C843
C854
R810
R812
C812
C850
R809
R811
C811
L733
R736
Z704
C910
R926
R827
D712
D713
D714
R828
R799
X901
R948
R954
R992
R993
R994
R952
C913
R940
R942
R942
R944
R945
R946
R989
C911
L704
C744
L702
C813
R814
C814
L901
R916
R766
R917
R918
R919
R920
R921
R925
R922
CNP706
R912
IC713
IC712
IC720
C817
C949
C947
C818
R880
C923
R879
C924
R878
C925
R737
R790
R789
R887
C942
C941
R884
C940
R820
R772
R773
R856
R859
C851
R850
R805
R807
C807
C853
R806
R808
C808
R808
C808
R971
C956
R975
C957
R977
C964
R979
C965
C965
IC718
R982
C959
C959
R976
C958
R974
R972
C955
C955
C819
D710
R986
D706
D707
C820
L721
R751
L722
R752
R733
C705
R758
R738
R702
R703
R746
R730
C726
C727
R895
R984
R983
R851
C721
R723
R720
C716
C746
C743
IC706
C710
R724
R725
R757
R726
R727
R722
R721
R728
C761
L709
C733
L708
R750
R749
R749
R748
R747
R753
R747
R753
R754
R756
R719
C709
L713
IC722
R985
D701
D711
R761
R762
R763
R762
R763
R764
R765
R767
R767
R755
R741
C752
R815
C754
C734
C826
IC708
R978
R973
R844
C960
C847
R846
R854
R863
R849
C839
R824
R825
IC715
C827
R841
C837
C718
C829
R802
R804
C804
R835
R823
R822
R843
R774
R775
R768
R769
R770
R771
C944
R883
C945
R882
C946
R881
R908
R910
R966
R967
R965
R964
R963
R962
R909
C901
R905
C912
R960
R904
R903
R902
R901
C891
R877
C892
C893
R875
C904
R867
C900
C921
R872
IC716
R840
R793
C930
R894
C931
C934
R938
R938
L707
R718
R717
C702
C701
R786
R787
R788
R759
C712
C732
C713
IC707
R955
C884
R943
C885
R862
C886
R861
C951
C816
C711
IC705
R785
C730
C749
X701
IC711
R834
L715
L710
R760
R742
R743
C753
C745
R784
R783
L711
C782
C880
R864
C881
C882
R874
C867
R865
C868
C868
C869
R873
Q704
L712
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HT-CN300H
– 38 –
FUNCTION TABLE OF IC
IC401 VHiLC74763/-1: OSD. (LC74763)
1
VSS
GND.
2*
XTAL IN 1
Crystal and capacitor connection in the crystal oscillator for an internal sync signal.
3*
XTAL OUT 1
Crystal and capacitor connection in the crystal oscillator for an internal sync signal.
4*
HSYNC OUT Horizontal sync signal output (AFC).
5
XTAL IN 2
Crystal and capacitor connection in the crystal oscillator for an internal sync signal.
6
XTAL OUT 2
Crystal and capacitor connection in the crystal oscillator for an internal sync signal
7*
VSYNC OUT Vertical sync signal output.
8
CS
Vertical sync signal output.
9
SIN
Serial data input (hysteresis input).
10
SCLK
Serial data input clock.
11
SECMA
SECAM mode switching at input.
12
526/625
Scan line switching (525/625) at input.
13
NTSC/PAL
Color NTSC/PAL switching.
14
3.58/4.43
3.58/4.43 MHz FSC switching.
15
RET
System reset input (active=“L”) (hysteresis input).
16
CV OUT
Composite video signal output.
17
VDD 2
Power supply for creating composite video signal levels.
18
CV IN
Composite video signal input.
19*
CV CR
SECAM chrominance signal input.
20
SYNC IN
Video signal input in the built-in sync separation circuit.
21*
SEPC
Bias input in the built-in sync separation circuit.
22
VSS
GND.
23
PD OUT
AFC control voltage output.
24
AMP IN
Filter.
25
AMP OUT
Filter.
26
FC
AFC control voltage input.
27
VCON IN
Coil and capacitor connection in the LC oscillator for VCO.
28
VCO OUT
Coil and capacitor connection in the LC oscillator for VCO.
29*
SYNC DET
EX-NOR output by horizontal sync signals (AFC) and CSYNC (sync separation).
30
VDD 1
Power supply (+5V: digital)
Port Name
Pin No.
Function
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
30
VDD1
1
VSS
29
SYNCDET
2
XTALIN1
28
VCOOUT
3
XTALOUT1
27
VCOIN
4
HSYNCOUT
26
FC
5
XTALIN2
25
AMPOUT
6
XTALOUT2
24
AMPIN
7
VSYNCOUT
23
PDOUT
8
CS
22
VSS
9
SIN
21
SEPC
10
SCLK
20
SYNCIN
11
SECAM
19
CVCR
12
525/625
18
CVIN
13
NTSC/PAL
17
VDD2
14
3.58/4.43
16
CVOUT
15
RST
Figure 38 BLOCK DIAGRAM OF IC
– 39 –
HT-CN300H
IC601 RH-iX0014BGZZ: System Microcomputer (IX0014BG) (1/2)
1
VDD
VDD
Input
(+) Power supply.
2
P37
RDS READY
Input
RDS IC Ready.
3
P36
RDS RDCL/KARA LAC
Output
RDS IC Clock or karaoke latch.
4
P35
RDS RDDA/MIC IN
Input
RDS IC Data or mic in.
5
P34
RDS RESET
Output
RDS Reset.
6
P33
-20dBATT
Output
-20dB Attenuator.
7
P32
FAN CONT
Output
Fan control.
8
P31
CCB CE0
Output
CCB CE0.
9
P30
CCB CE1
Output
CCB CE1.
10
RESET
RESET
Input
Microcomputer reset.
11
X2
X2
Output
Main clock.
12
X1
X1
Input
Main clock.
13
VPP/IC
VPP/IC
—
GND.
14*
XT2
XT2
—
Open.
15
P04
SPN
Input
Tuner span select.
16
VDD
VDD
Input
(+) Power supply.
17
P27
CLK
Output
CCB/OSD/Karaoke clock.
18
P26
DATA
Output
CCB/OSD/Karaoke data.
19
P25
CCB DO INPUT
Input
CCB DO input.
20
P24
CCB CE2
Output
CCB CE2.
21
P23
FLD CS
Input
DSP Micom FL CONT CS.
22
P22
FLD SCK
Input
DSP Micom FL SCK.
23*
P21
OPEN
Output
Open.
24
P20
FLD SDATA
Input
DSP Micom FL CONT Stand.
25
AVSS
AVSS
—
Analog ground.
26
ANI7
POWER
Input
Power output level input
27
ANI6
PROTECT
Input
Protect input.
28
ANI5
THERMO
Input
Thermo level input.
29
ANI4
TUN SM
Input
Tuner signal meter.
30
ANI3
DIST 1
Input
Distination 1.
31
ANI2
DIST 0
Input
Distination 0.
32-33
ANI1-ANI0
KEY 1-KEY 0
Input
Key input.
34
AVDD
AVDD
Input
Analog VDD.
35
AVREF
AVREF
—
Analog ref voltage.
36
INTP3
SYS_STOP
Input
Power failure control.
37
INPT2
DSP RX-IN OUT
Output
Output to DSP microcomputer remcon input.
38
INTP1
DSP SYSTEM STOP
Output
DSP system stop output.
39
INTP0
REMOCON
Input
Remocon input.
40
VSS
VSS
—
Ground voltage.
41
P74
REM ACK LED
Output
Remocon acknolage LED.
42
P73
SMUTE
Output
System mute control.
43
P72
POWER ON LED
Output
Power on LED control.
44
P71
STAND BY LED
Output
Stand by LED control.
45
P70
DSP RESET
Output
DSP Microcomputer reset.
46
VDD
VDD
Input
(+) Power supply.
47
P127
DSP SMUTE IN
Input
DSP S-mute Signal input .
48
P126
DSP POWER IN
Input
DSP power on signal input.
49
P125
DD LED
Input
DSP D.D LED input.
50
P124
STD LED
Input
DSP STD LED input.
51
P123
DTS LED
Input
DSP DTS LED input.
52
P122
VIR LED
Input
DSP VIR LED input..
Port Name
Terminal Name
Pin No.
Input/Output
Function
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
HT-CN300H
– 40 –
53
P121
DPL LED.
Input
DSP DPL LED input.
54*
P120
DVD DIG 2
Output
DVD DIG 2 : H.
55
P117
VIDEO OUT MUTE
Output
Video out mute : H.
56
P116
OSD CS 1
Output
ODS 1 IC chip select.
57
P115
OSD CS 2
Output
ODS 2 IC chip select. (H only)
58
P114
NTSC/PAL
Input
NTSC/PAL sw input.
59
P113
V SW 2
Output
Video select sw 2.
60
P112
V SW 1
Output
Video select sw 1.
61
P111
V REC MUTE
Output
Video REC mute.
62
P110
FUNC_DVD
Output
Function DVD : H, other :L.
63*
P107
FUNC_TUNER
Output
Function tuner : H, other : L.
64
P106
NO USE
Output
GND.
65
P105
LMUTE
Output
Line out mute control.
66
P104
AC RLY
Output
AC RLY control.
67
P103
W SP RLY
Output
Subwoofer rely control.
68
P102
S SP RLY
Output
Surround speaker rely control.
69
P101
C/W SP RLY
Output
Center speaker rely control.
70
P100
F SP RLY
Output
Front speaker rely control.
71-78
FIP28-FIP21
P20-P13
Output
FL Display segment driver.
79
VLOAD
VLOAD
Output
FL driver (-) power supply. -30 V
80-91
FIP20-FIP9
P12-P1
Output
FL Display segment driver.
92-100
FIP8-FIP0
G9-G1
Output
FL Display segment driver.
IC601 RH-iX0014BGZZ: System Microcomputer (IX0014BG) (2/2)
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Port Name
Terminal Name
Pin No.
Input/Output
Function
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