Sony CDX-838 Service Manual page 34

Pin No. Pin Name
47 D/A.RESET
48 SCK
49 SI
50 SO
51 SCLK
52 SUBQ
53 —
54 C.OUT
55 BUS.ON
56 A/D.SW
57 MGLK
58 ELV.F
59 —
60 MAG.SW
61 BU.CHK
62 W.UP
63 SCOR
64 EJECT
65 CD.CLK
66 CD.XLT
67 CD.DATA
68 CD.ON
69 ELV.ON
70 ELV.R
71 —
72 VDD
73 NC (VDD)
74 BUSY
75 RESET
76 REQ
77 CCCLK
78 CSO
79 CSI
80 ADJ
*1 chucking motor (M103) control
Mode
Terminal
CH.F (pin 4)
CH.R (pin 5)
*2 elevator motor (M104) control
Mode
Terminal
ELV.F (pin tk)
ELV.R (pin u;)
34
I/O
O Reset signal output to the D/A converter (IC601) "L": reset
I Serial data transfer clock signal input from the SONY bus interface (IC302)
I Serial data input from the SONY bus interface (IC302)
O Serial data output to the SONY bus interface (IC302)
O Subcode Q data reading clock signal output to the CXD2530Q (IC101)
I Subcode Q data input from the CXD2530Q (IC101)
O Not used (open)
I Track number count signal input from the CXA1992BR (IC11)
I Bus on/off control signal input from the SONY bus interface (IC302) "H": bus on
I Analog/digital select switch (SW801) input terminal "L": digital, "H": analog
I Magazine eject operation completion detect switch (SW201) input "L": magazine detected
Motor drive signal (elevator up direction) output to the elevator motor drive (IC301)
O
"L" active *2
O Not used (open)
I Magazine in/out detect switch (SW202) input "L": normally "H": magazine in/out operation
Battery detection signal input terminal "H": battery on
I
I Bus on or eject switch (SW301) input terminal "H": bus on or eject switch pushing
I Subcode sync (S0+S1) detection signal input from the CXD2530Q (IC101)
I Eject switch (SW301) input terminal "H" active
O Serial data transfer clock signal output to the CXD2530Q (IC101) and CXD2522Q (IC401)
O Serial data latch pulse signal output to the CXD2530Q (IC101)
O Serial data output to the CXD2530Q (IC101) and CXD2522Q (IC401)
O D/A converter and servo section power supply on/off control signal output "H": power on
O Mechanism deck section power supply on/off control signal output "H": power on
Motor drive signal (elevator down direction) output to the elevator motor drive (IC301)
O
"L" active *2
O Not used (open)
— Power supply terminal (+5V)
— Connected to the power supply (+5V)
I Busy monitor input from the CD text decoder (IC501) "L": busy status
O Reset signal output to the CD text decoder (IC501) "L": reset
I Data request signal input from the CD text decoder (IC501) "L" active
O Command clock signal output to the CD text decoder (IC501)
O Command data output to the CD text decoder (IC501)
I Command data input from the CD text decoder (IC501)
Automatic/manual adjustment selection terminal
I
"L": manual adjustment mode, "H": automatic adjustment mode (fixed at "H" in this set)
LOAD
STOP
CHUCKING
"H" "L"
"H" "H"
ELEVATOR ELEVATOR
STOP
UP
"H" "L"
"H" "H"
Description
SAVE BRAKE
"H" "L"
"L" "L"
BRAKE
DOWN
"H" "L"
"L" "L"