Sony D-ES51 Service Manual page 22

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Pin No. Pin Name
38 HOLD2
39 SDTO
40 SDTI
41 SCK
42 FOK
43 BUSY
44 BEEP
45 SCOR
46 NC
47 VDD
48 to 51 COM3 to COM0
52 VREFH
53 VREFL
54 ESPSL/TEST
55 KEY
56 RMKEY
57 DCINMNT
58 BATMNT
59 CHGMNT1
TE
L 13942296513
60 VSS
61 CHGMNT2
62 OSMNT
63 to 77 SEG0 to SEG14
78, 79 SEG15, SEG16
80 XEC4
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I/O
I Inputs of HOLD switch on the switch unit
O Serial data output to the D-RAM controller (IC601) (for ESP)
I Serial data input from the D-RAM controller (IC601) (for ESP)
O Serial data transfer clock signal output to the D-RAM controller (IC601) (for ESP)
I Focus OK signal input from the RF amplifier (IC501) "H": OK, "L": NG
I Busy signal input from the BU9325KS (IC502) "L": track jump mode, "H": servo loop on
O Beep sound output to the headphone amplifier (IC302)
I Sub-code sync (S0+S1) detection signal input from the BU9325KS (IC502)
O Not used (open)
— Power supply terminal (+3V)
O Common drive signal output to the liquid crystal display on the switch unit
I Reference voltage input terminal (+3V) (for A/D converter)
I Reference voltage input terminal (0V) (for A/D converter)
I Service mode setting terminal "L": service mode, Normally: fixed at "H"
I Key input from the switch unit (A/D input)
I Key input terminal (A/D input) Not used (open)
I DC in voltage detection input terminal (A/D input) Also used for DC IN detection
Battery voltage detection input terminal
I
Also used for rechargeable battery/dry battery detection
I Battery charging voltage detection input from the MPC18A26VMEL (IC401)
— Ground terminal
Battery voltage detection input terminal (A/D input)
I
Also used for rechargeable battery/dry battery detection Not used (fixed at "L")
I DSP offset voltage adjustment voltage monitor input from the BU9325KS (IC502)
O Segment drive signal output to the liquid crystal display on the switch unit
O Segment drive signal output terminal Not used (open)
Error correction "L": quadruple correction, "H": double correction
I/O
Fixed at "L" in this set
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