![background image](http://html.mh-extra.com/html/sony/hcd-px333/hcd-px333_service-manual_420832091.webp)
91
HCD-PX333
Pin No.
Pin Name
I/O
Description
46
MD/CD POWER
O
Power down detection signal output to the MD mechanism controller (IC1001) and CD
mechanism controller (IC1101)
47
TR RELAY
O
Standby relay (RY991) control signal output (“L”: standby, “H” : power on)
PC LINK/KEY BOARD (CN104) ON/OFF control signal output (“H”: on, “L” : off)
48
RECMUTE
O
Muting on/off control signal output of tape output signal “L”: muting on
49
DIMMER
O
LCD back light on/off control signal output “H”: LED on
50
GC POWER
O
Not used (open)
51
KBD CHK
I
Key board check signal input terminal
52
LED MD-PAUSE
O
LED drive signal output of the
X
(MD) indicator (D605) “H”: LED on
53
LED MD-PLAY
O
LED drive signal output of the
N
(MD) indicator (D604) “H”: LED on
54
LED CD-PAUSE
O
LED drive signal output of the
X
(CD) indicator (D603) “H”: LED on
55
LED CD-PLAY
O
LED drive signal output of the
N
(CD) indicator (D602) “H”: LED on
56
LED MD-REC
O
LED drive signal output of the REC indicator (D606) “H”: LED on
57
LED STANDBY
O
LED drive signal output of the I/
1
indicator (D601) “H”: LED on
58
BVDD
—
Power supply terminal (+5V)
59
BVSS
—
Ground terminal
60
LED DATA
O
Serial data output terminal for LED driver Not used (open)
61
LED CLK
O
Serial data transfer clock signal output terminal for LED driver Not used (open)
62
LED CE1
O
Chip select signal output terminal for LED driver Not used (open)
63
LED CE2
O
Fan motor (M901) drive signal output “H”: fan motor on
64
LED CLEAR
O
Reset signal output terminal for LED driver Not used (open)
65, 66
FUNC1, FUNC2
O
Function selection signal output terminal Not used (open)
67
HEADPHONE IN
I
Headphone in detection signal input “H”: headphone in
68
ENC VOL A
I
Jog dial pulse input from the rotary encoder A phase input Not used (fixed at “L”)
69
ENC VOL B
I
Jog dial pulse input from the rotary encoder B phase input Not used (fixed at “L”)
70
ENC JOG 1A
I
Jog dial pulse input from the rotary encoder A phase input Not used (fixed at “L”)
71
ENC JOG 1B
I
Jog dial pulse input from the rotary encoder B phase input Not used (fixed at “L”)
72, 73
DEVICE3,
DEVICE2
—
Not used (fixed at “L”)
74
AVDD
—
Power supply terminal (+5V)
75
AVSS
—
Ground terminal
76
AVREF
I
Reference voltage (+5V) input terminal
77, 78
LID SW1,
LID SW2
I
Switch input terminal Not used (fixed at “L”)
79 to 82
DIST 1 to DIST 4
I
Model destination setting terminal
83
LEVEL-L
I
L-ch level input terminal Not used (fixed at “L”)
84
LEVEL-R
I
L-ch level input terminal Not used (fixed at “L”)
85
KEY1
I
Key input terminal (A/D input) S601 to S606 (I/
1
,
x
(CD),
N X
CD,
M >
,
, VOLUME –, keys input)
86
KEY2
I
Key input terminal (A/D input) S621 to S628 (
. m
TUNING –, FUNCTION,
PLAY MODE TUNING MODE, REPEAT STEREO/MONO, REC MODE, REC/REC IT,
CD SYNC NORMAL, CD SYNC HIGH keys input)
87
KEY3
I
Key input terminal (A/D input) S631 to S637 (
Z
MD,
x
(MD),
. m
,
N X
MD,
M >
,
Z
CD, TUNER/BAND keys input)
88
KEY4
I
Key input terminal (A/D input) Not used (fixed at “H”)
89
NMI
I
Non-maskable interrupt input terminal Fixed at “L” in this set
90
KBD CLK
I
Key board data reading clock signal input terminal
91
KEY RM INT
I
Interrupt signal input from function keys or remote control receiver
Summary of Contents for HCD-PX333
Page 49: ...49 HCD PX333 Checking Location IC171 IC101 TP VC TP FE TP TE TP RF BD CD BOARD Conductor Side ...
Page 50: ...50 HCD PX333 MEMO ...
Page 69: ...69 69 HCD PX333 6 17 SCHEMATIC DIAGRAM AMP BOARD ...
Page 70: ...70 70 HCD PX333 6 18 SCHEMATIC DIAGRAM SP BOARD ...
Page 72: ...72 72 HCD PX333 6 20 SCHEMATIC DIAGRAM PANEL SECTION1 ...
Page 75: ...75 75 HCD PX333 6 24 SCHEMATIC DIAGRAM POWER BOARD ...
Page 111: ...111 HCD PX333 MEMO ...