Aiwa HV-FX7800 Service Manual page 49

IC DESCRIPTION -2/4 (HD6432197A37FX) <HV-FX4300> -2/3
Pin No. Pin Name
42 SE/MESECAM 'H'
43 R/C IN
44 C + DETECT
45 N.C
46 VCR 'H'
47 REC 'H'
48 OTPB
49 T/UP REEL
50 CAP. REV 'H'
51 TOP SENSOR
52 PWR CTL "H"
53 SCART "H"
54 TUN.SEC.VL"H"
55 TUN.SEC."H"
56 MAIN VCC
57 MAIN VSS
58 HSR 'H'
59 IIC CLK
60 IIC DATA
61 TIMER 'H'
62 GRID 5
63 GRID 4
64 GRID 3
65 GRID 2
66 GRID 1
67 STAND BY 'H'
68 MODE SW 4
69 MODE SW 3
70 MODE SW 2
71 MODE SW 1
72 LD (–)
73 LD (+)
74 FWE
75 X2 (32.768kHz/OUT)
76 X1 (32.768kHz/IN)
77 RES
78 OSC1 (IN)
79 Vss
80 OSC2 (OUT)
81 VCL
82 MDO
I/O
O Osd control in secam/mesecam
I Remote data input
I C + detect
– Not connected
– Not connected
O High out at rec mode
O OTPB "H"
I Take-up reel pulse input
O CAP reverse "H"
I Tape leader check at top
O Power control
O TV/VCR mode control in scart model
O Secam VHF L band "H"
– Tuner secam signal det."H"(Not connected)
– Micom power supply
– Micom GND
– High speed rewind "H"(Not connected)
O IIC bus clock line
I/O IIC bus data line
O 6w mode power sw
O Grid 5 control
O Grid 4 control
O Grid 3 control
O Grid 2 control
O Grid 1 control
O 2W mode power switching
I Mode switch data4 input
I Mode switch data3 input
I Mode switch data2 input
I Mode switch data1 input
O Loading motor drive (-)
O Loading motor drive (+)
– Flash write mode control pin(Not used in mask)
O 32.768 kHz cristal out
I 32.768 kHz cristal in
I Micom reset pin ("L" active)
I For the connection of 10 MHz OSC
– Micom GND
O For the connection of 10 MHz OSC
I Connect 'C' to Vss
I Mandatory 'H' connect
Description
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