Kenwood DMC-J3 Service Manual page 8

DMC-J3
Pin No. Pin Name
62 PEAK
63 BOTM
64 ABCD
65 FE
66 AUX1
67 VC
68 ADIO
69 AVDD
70 ADRT
71 ADRB
72 AVSS
73 SE
74 TE
75 AUX2
76 DCHG
77 APC
78 ADFG
79 F0CNT
80 XLRF
81 CKRF
82 DTRF
83 APCREF
84 LDDR
85 TRDR
86 TRDR
87 DVDD
88 FFDR
89 FRDR
90 FS4
91 SRDR
92 SFDR
93 SPRD
94 SPFD
95 FGIN
96-98 TEST1-3
99 DVSS
100 MUTFGR
CIRCUIT DESCRIPTION
I/O
I Laser peak hold signal input port.
I Laser bottom hold signal input port.
I Laser input port.
I Focus error signal input port.
I Auxiliary port 1
I Center voltage input port.
O Monitor port of A/D converter input signal.
– Analog power supply.
I Peak voltage input port in A/D converter operation.
I Bottom voltage input port in A/D converter operation.
– Analog GND.
I Feed error signal input port.
I Tracking error signal input port.
I Auxiliary port 2.
I –
I Error signal input port of laser digital APC.
I FM signal(22.05±1kHz)input port.
O Current source output port of CXA2523.
O Latch output port of CXA2523. Latch=falling edge.
O Shift clock output port of CXA2523.
O Data output port of CXA2523.
O Reference PWM output port of laser APC.
O PWM output port for laser digital APC.
O Negative tracking servo drive PWM output port.
O Positive tracking servo drive PWM output port.
– Digital power supply.
O Positive focus servo drive PWM output port.
O Negative focus servo drive PWM output port.
O 4Rs output port(176.4kHz).
O Negative feed servo drive PWM output port.
O Positive feed servo drive PWM output port.
O Negative spindle servo drive PWM output port.
O Positive spindle servo drive PWM output port.
I FG input port of spindle CAV servo.
I Test port.
– Digital GND.
O R-ch zero data detection flag output port.
Description
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