Sony Discman D-E440 Service Manual page 12

Pin No. Pin name
46 – 49 COM 3–0
50 VREFH
51 VREFL
52 AD ESPSL/TEST
53 AD–KEY
54 AD–WRMT
55 AD–HI DC
56 AD – BAT
57 AD – CHGMNT
58 AD – VCC
59 AD – DSP OFFSET
60 FP10
61 – 72 SEG 0 – 11
I/O
O LCD common signal output terminal.
I Reference voltage input terminal (connect to VDD).
– Connect to ground.
I Test mode terminal. " L " : Test mode " H " : Nomal mode
I A/D input terminal for main unit key.
I A/D input terminal for remote control key.
I A/D input terminal for DC IN voltage detection.
I Rechargeable battery/dry cell detection input.
I A/D input terminal for charging voltage monitor.
I A/D input terminal for VCC voltage monitor.
I A/D input terminal for DSP off-set monitor.
– Not used (Open).
O LCD segment signal output terminal.
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Description