Read Sharp HT-CN300H (serv.man11) Service Manual online
HT-CN300H
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52*
P42/A18
V_SEL2
Output
Connected to video output selector, SW2.
53*
P41/A17
V_SEL3
Output
Connected to video output selector, SW4.
54*
P40A16
V_SEL4
Output
Connected to video output selector, SW5.
55*
P37/A15
V_DATA
Output
Data output for electronic Vol IC control signal.
56*
P36/A14
VOL_STB
Output
Strobe output for electronic Vol IC control signal.
57*
P35/A13
VOL_CLK
Output
Clock output for electronic Vol IC control signal.
58*
P34/A12
DOOR_SPED
Output
DVD/CD door speed switch output
59*
P33/A11
DOOR_M+
Output
Control output of CD/DVD mechanism door OPEN/CLOSE control motor.
60*
P32/A10
DOOR_M-
Output
Control output of CD/DVD mechanism door OPEN/CLOSE control motor.
61
P31/A9
DOOR_OP
Input
CD/DVD mechanism door OPEN SW input.
62
VCC
VCC
Input
Microcomputer power supply (3.3 V).
63
PP30/A8(/-/D7)
DOOR_CL
Input
CD/DVD mechanism door CLOSE SW input.
64
VSS
GND
Output
Connected to GND (VSS).
65
P27/A7(/D7/D6)
ROM
Output
ROM/RAM enable control output on DSP PWB.
66
P26/A6(D6/D5)
DSP_AB00T
Output
DSP auto boot control terminal. Auto boot starts by “L” setting at DSP RESET.
67
P25/A5(/D5/D4)
OFFSET
Input
Detection input of 1-bit AMP
∆∑
IC’s output offset voltage error.
68*
P24/A4(/D4/D3)
A/D_RESET
Output
1-bit AMP’s
∆∑
IC reset control output.
69*
P23/A3(/D3/D2)
DVD_+B
Output
Output of power control and DIG signal switch to the DVD unit.
70*
P22/A2(/D2/D1)
DIG_FUNC+B
Output
Power control output for external DIG input.
71*
P21/A1(/D1/D0)
BASS-SW
Output
Output for subwoofer amp gain control.
72
P20/A0(/D0/-)
S_MUTE
Output
System mute control output.
73
P17/D15/INT5
A/D_REMONI
Input
1-bit AMP’s
∆∑
IC reset monitor output (Schmitt).
74
P16/D14/INT4
DSP_INTREQ
Input
DSP data reception request signal output.
75
P15/D13/INT3
H. P_SW
Input
Headphone SW detection input.
76*
P14/D12
-B_CONT
Output
1-bit AMP’s +B power control relay control output.
77*
P13/D11
FAN_MOTOR
Output
Output for cooling fan motor rotation control.
78
P12/D10
POWER
Output
Primary power relay control ouput.
79
P11/D9
W_SP_RLY
Output
Subwoofer speaker relay output.
80
P10/D8
S_SP_RLY
Output
Surround speaker relay output.
81
P07/D7
C_SP_RLY
Output
center speaker relay output.
82
P06/D6
F_SP_RLY
Output
Front speaker relay output
83
P05/D5
POWER_KEY
Input
Power operation key input.
84
P04/D4
TU_MUTE
Output
Tuner mute output.
85
P03/D3
CCB_DO
Input
Serial data input from Sanyo CCB device.
86*
P02/D2
CCB_CL
Output
Serial clock output from Sanyo CCB device
87*
P01/D1
CCB_DI
Output
Serial command data output from Sanyo CCB device
88*
P00/D0
CCB_CE
Output
CE control output from Sanyo CCB device.
89
P107/AN7/K13
TUNER_SM
Input
A/D downloading, field strength comparison detect input.
90
P106/AN6/K12
SD_ST_IN
Input
A/D downloading. Tuner tuning, stereo signal detect..
91
P105/AN5/K1
PROTECT
Input
A/D downloading. System error detection input.
92
P104/AN4/KI0
AREA
Input
A/D downloading. Destination setup for tuner band.
93
P103/AN3
TV_TYPA
Input
Sets the TV type by A/D downloading.
94
P102/AN2
DOOR_PROT
Input
Finger pinching detection input by CD/DVD mechanism door.
95
P101/KEY2
AVSS
Input
A/D downloading, main unit key input 2.
96
AVSS
GND
Input
VSS terminal of A/D converter.
97
P100/ANP/
KEY1
Input
A/D downloading, main unit key input 1.
98
PVREF
VREF
Input
Reference voltage input terminal of A/D converter.
99
AVCC
AVCC
Input
Power supply input terminal of A/D converter.
100
P97/ADTRG/SIN 4
GND
Input
Port processing. “L” fixed. (Not used.).
IC710 RH-iX0489AWZZ: System Microcomputer (IX0489AW) (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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