Sony MDX-C6500X Service Manual page 24

Pin No. Pin Name
46 LINKOFF
47 UNIREQ
48 UNICKIO
49 UNISI
50 UNISO
51 MD-CKO
52 MD-SI
53 NCO
54 SENS
55 CC-XINT
56 LIMIT-IN
57 EJT-KEY
58 ERROR-PWM
59 MD-RST
60 BU-IN
61 BUS-ON
62 SQSY
63 C-SW
64 MD-LAT
65 MD-ON
66 DEEMP
67 A-MUTE
68 NCO
69 TSTCKO
70 TSTSO
71 TSTMOD
72 VCC
73 NIL
74 – 77 TOUT0 to TOUT3
78 – 80 TIN0 to TIN2
*1 Loading motor (M903) control
Operation
IN
Terminal
LOAD (pin 6) "H"
EJECT (pin 7) "L"
24
I/O
O Unilink on/off control signal output for the SONY bus "L": link on, "H": link off
O Data request signal output terminal (for SONY bus) "H": request on Not used (open)
Serial clock signal input from the master controller (IC801) or serial clock signal
I/O
output to the SONY bus interface (IC802) and master controller (IC801) (for SONY bus)
I Serial data input from the SONY bus interface (IC802)
O Serial data output to the SONY bus interface (IC802)
Serial data transfer clock signal output to the CXD2652AR (IC301) and
O
CXA2523AR (IC302)
I Reading serial data signal input from the CXD2652AR (IC301)
O Not used (open)
I Internal status (SENSE) input from the CXD2652AR (IC301)
I Interrupt status input from the CXD2652AR (IC301)
Detection input from the sled limit-in detect switch
I
The optical pick-up is inner position when "L"
I Eject request signal input terminal "L": eject on Not used (fixed at "H")
PWM error monitor output terminal (C1and ATER is output when test mode)
O
Not used (open)
O Reset signal output to the CXD2652AR (IC301) and BH6511FS (IC303) "L": reset
Battery detect signal input from the SONY bus interface and battery check circuit
I
"H": battery on
I SONY bus on/off control signal input from the master controller (IC801) "L": bus on
Subcode Q sync (SCOR) input from the CXD2652AR (IC301)
I
"L" is input every 13.3 msec Almost all, "H" is input
Inputs the disc loading start or disc eject completion detect switch detection signal
I
"L": When start or eject completed of the disc loading operation
Serial data latch pulse signal output to the CXD2652AR (IC301) and
O
CXA2523AR (IC302)
Power supply on/off control signal output of the MD mechanism deck section main
O
power supply "H": power on
Emphasis on/off control signal output to the master controller (IC801)
O
"H": emphasis on
O Audio muting on/off control signal output terminal
O Not used (open)
O Output of clock signal for the test mode display Not used (open)
O Output of data for the test mode display Not used (open)
I Setting terminal for the test mode "L": test mode, "H": normal mode
— Power supply terminal (+5 V)
I Not used (fixed at "H")
Output of the 4 × 8 matrix test keys Not used (open)
O
Input of the 4 × 8 matrix test keys ("L" is always output, except in test mode)
I/O
Not used (open)
OUT BRAKE STOP
"L" "H" "L"
"H" "H" "L"
Pin Description