48
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30-42
43-45
46
47-50
51
52-63
64
65
IC, LC876564
Pin No.
Pin Name
I/O
Description
IC DESCRIPTION
_______________
I-STEREO/DRF
I-TUDO/I-SQOUT
I-RDSDATA/O-COIN
___________
O-F.LED
O-M.STB
O-CLK
O-DATA
O-VOLCTL
I-TMBASE
_____________
O-CKSFT
RESET
I-ACOFF
I-TU-SIG/I-MS
VSS
CF1
CF2
VDD1
N.C
I-KEY1
I-KEY0
I-DSW
I-CDTSW
I-ENC1
M SENSOR
O-CE
N.C.
I-LEVEL
I-RDS-CLK/I-WRQ
I-RMC
G1-G13
P33-P35
VDD3
P29-P32
VP
P17-P28
________
P16/BBE
______________
P15/DOLBY
I
I
I
O
O
O
O
O
I
O
I/O
I
I
—
—
—
—
—
I
I
I
I
I
I
O
—
I
I
I
O
O
—
O
—
O
O
O
Connected to stereo detection and tuner CD ASP LA9241ML pin-54 DRF.
Connected to tuner PLL IC LC72131 pin-
6
DO and connected to CD DSP
LC78622ED pin-55 SQOUT.
Connected to RDS data input CD DSP LC78622ED pin-56 COIN and CD ASP
LA9241ML pin-52 DAT.
Function LED control output.
Connected to main shift resistor 4094 pin-
1
STB.
Connected to front shift resistor BU2092 pin-
3
CLK, main shift resistor 4094 pin-
3
CLK, and tuner PLL IC LC72131 pin-
5
CL.
Connected to front shift resistor BU2092 pin-
2
DATA, main shift resistor 4094 pin-
2
DATA, and tuner PLL IC LC72131 pin-
4
DI.
Connected to VOL/P.EQ IC M62439SP pin-
!
CONT.
Reference clock input for clock PLL IC LC72131 pin-
7
.
Clock shift output is shifted: “L”
Microprocessor reset.
Hold status detection.
RDS signal level AD value input, and CD ASP LA9241ML pin-52 DAT.
GND.
Connected to 5.76 MHz oscillator
Connected to 5.76 MHz oscillator.
Microprocessor power supply. (µ-com 5 V)
Not connected.
Key AD value input.
Key AD value input.
Deck MECA status detection input. (AD)
CD tray OPEN/CLOSE status detection input. (AD)
AD value input from multiple jog rotary encoder outputs A and B.
Electronic VOL’s AD value input from rotary encoder outputs A and B.
Connected to tuner PLL IC LC72131 pin-
3
CE.
Not connected.
Level meter input.
Connected to RDS CLK input and CD DSP LC78622ED pin-53 WRQ.
Remote control input.
FL tube grid output.
FL tube anode output.
Microprocessor power supply. (µ-com 5 V)
FL tube anode output.
Connected to minus power supply for FL, -VFL.
FL tube anode output.
FL tube anode output, and INT.DIODE MATRIX input.
FL tube anode output, and INT.DIODE MATRIX input.
Summary of Contents for XR-M77
Page 10: ...12 11 BLOCK DIAGRAM 1 TO TUNER ADAPTOR PWB RL881B ...
Page 11: ...14 13 BLOCK DIAGRAM 2 ...
Page 25: ...41 1 2 3 4 5 6 7 A B C D E F G H I J K WIRING 9 MECHA MOTOR C B TO FROM CD C B CN403 ...
Page 26: ...42 VOLTAGE CHART ...
Page 27: ...43 ...
Page 28: ...44 ...
Page 29: ...45 ELECTRICAL ADJUSTMENT CD SECTION ...
Page 38: ...54 IC BLOCK DIAGRAM IC BU4094BCF IC BA3880FS IC BU2092 ...
