Clarion ARX7370R Service Manual

CLAR-00398 / Druck 1
EXPLANATION
OF
IC
System Controller
052-3330-00 (Stave micro computer)
MuPD78058FGC-044-3B9
Outward Form
80 pins, plastic QFP
Terminal Description
Symbol vO Function
— | Notinuse
eealled
N.C.
AUTO
CLOSE
1
|
For"H"
:
Auto
close
function
available
For Hi. select type S' where slope console is
controlled. For Low, select type A where slope
console is not controlled.
ss
Serial data communication line with master computer
N.C. | Not in use
DCP 5V DCP : Vdd power supply ON signal output terminal
27 ;
4 | NC. Not in use
30
Sub woofer level setting signal output
Non fader/sub woofer switch output terminal Outputs
HEADIODY. jo "H" for woofer
37 | DOLBY B/C Outputs "L” for Dolby B, "H" for Dolby C
DOLBY ON
39 | SLAVE MUTE
38 Outputs "H” for Dolby ON
Outputs "L” when applying mute
Outputs "L" in forward. Output "H" in reverse
Outputs "H” in EQ=70pS, outputs "L" in EQ=120pS
FWD/REV
41 | METALON
42 | APC DET Inputs "H" in playing unrecorded part
Sensitivity switching terminal for APC circuit. Switch
sensitivity in PLAY or in FF
Play mode : Low O/P
FF/REW mode : Hi O/P
The terminal to detect a cassette pack insertion in
EJECT mode. Loading starts when this terminal turns
from “L" to "H".
In PLAY/FF/REW mode, reel rotation pulse signal
is input
43 | APC SENC
44 APE IN
45 | REEL PLUSE
Mechanism mode detection input
Bir 1[BiT 2[BIT
46 _—H_
| H
FWD-FF (REV-REW)
Hi
47
48
BIT 2
BIT 1
BIT3
FWD-REW (REV-FF)
FWD-PLAY
REV-PLAY
:
:
No. Symbol
Function
49 | METAL SW Metal tape detection input. Input “L" for normal tape.
Motor controt output
Mechanism in motion
Loading hea
forward
Eject head
backward
Keeps the current
mode (BRAKE)
Stop (OFF)
50 | P-2 oO
St | P-l 10)
Control terminal for main motor. Outputs Hi only in
PLAY/FF/REW. Outputs Low in other modes and
during mode switching.
52 | MECH MOTOR
Control terminal to provide power supply for cassette
mechanism in TAPE mode. Outputs " H" in TAPE
mode.
Outputs Hi in slave micro computer in motion. It
supplies bias to OPEN/CLOSE detection switch.
OPEN BIAS ie)
SLOPE MOTOR fo
56 } MOTOR+
57 | MOTOR-
[ Slope motion __JOPEN(58)|CLOSE (59)
- foe | |
58 | OPEN
fens we
60 RESET | Micro computer hardware stops when this terminal
turns "L
| 61 | REMOCON Remote control signal input (pulse)
When this terminal is Low, micro computer detects
62 | B/U DET B/U OFF, then stop oscillating by turning micro
computer into STOP mode.
When this terminal turns from Low to Hi, it detects
63 | 5V REM IN ACC+5V is ON and turns from motion mode 1o STOP
mode.
B.B. REQ Insertion signal input terminal from B.B DSP
TAPE DOOR Inputs "L" when cassette tape is in the insertion slit
66 LCD DET IN ey LCD driver. Input terminal for data transfer permis-
sion signal
67 | GND | - | Gxp
}vpp | - | Electrical power supply terminal
69 | X2 Celullar lock connecting terminal for main system
70 | XI 5 clock oscillation
i
XT2
3 | XT1
74 | AVDD - |
we
Connected to GND
ae|=|
my
Applied voltage terminal for analog power supply for
A/D converter
AVREFO Standard applied voltage terminal for A/D converter
S | NC.
80
WiuPD178018GC-515-3B9 052-1314-00 Master Micro Computer
Outward Form
80 pins, plastic QFP
Termina! Description
fee [ Sy
A Cc
PHOTO TR DET a Light quantity detection input terminal for auto
dimmer
Input terminal for detecting key pushed out of OPEN/
Ne ia EJECT/FUNCTION
joa ae ee
Fe] nos [1 No i rR aS
i a =
o
SUB SI I
8 | SUBSO ie)
SUB SCK VO | Serial communication line with slave micro computer
SUB REQ
SUB BUSY
C-BUS SI
C-BUS SO
C-BUS SCK oO
14
PULSE DIMMER 0 | Output terminal for pulse dimmer B/L LED ON signal
fic[sor —[o [nee
Outputs Low when the first round starts in LOCAL
FM LOCAL SEEK and auto store. After receiving signal it returns
to Hi output.
fe|ou [oe [rainwe SSS
Outputs Hi when the first round starts in LOCAL
AM LOCAL
O | SEEK and auto store. After receiving signal it returns
to Hi output.
REMOUTSAV [0 [nmin
anbrot [- [ow SS~*S
VDD PORT = | Power supply terminal
Output terminal for switching an FM SOFT MUTE
sorrmure | 0 | wpa
SYS MUTE | 0 | Output terminal for system mute signal
25 | IFREQ FM diversity output terminal. Outputs Hi in RADIO
mode, FM, diver ON; outputs Low in diver OFF
RDS MUTE RDS output terminal for noise reduction during
follow-up motion
C-BUS data communication line
RDS DISCHG RDS output terminal for discharging the voltage
detected by RDS NOISE (5 pin)
AM IF count signal input terminal
air |
ILLUMI DET
27
28
29 FM IF count signal input terminal
PLL power supply terminal
Not in use
GND
Not in use
GND
:
Detection terminal for AM SD. Judges SD ON by Hi
3
38 Detection terminal for FM SD. Judges SD ON by Hi
39 Detecting terminal for FM stereo indicator
Inputs data from RDS decoder
THumination signal detection terminal
B REM +
Outputs Hi by power ON, supplying +B power
Serial data communication line to electronic volume
o 15
pare terminal for RDS decoder power ON
e[eele[=|s/ele
: um
Q
C al
No. Symbol Function
Output terminal for FM ON signal
47 | AMON | 0 | Output terminal for AM ON signal
Outputs signal for SV power ON around micro
computer
SV REM
Request signal input terminal reading status from
slave microcomputer. When this terminal turns Low
it detects the status reading requested
C-BUS SRQ
50 | EJECT LAMP O | Eject key illumination output terminal
H/L DIMMER Not in use
GND GND
PLL data communication terminal with PLL IC
Not in use
LED flashing output signal
KEY ILL Outputs signal for DCP key illumination lighting
LCD display ON/OFF control port. Connected to
62 | LCD DET OUT : |
slave micro computer
63
§ | GND GND
66
RDS CLK 1 | Clock signal input from RDS decoder
When this terminal turns Low, micro computer detects
B/U DET the B/U OFF and turns micro computer to STOP
mode, stopping oscillation
| 69 | ACC DET ON/OFF detection terminal for ACC power supply
DCP removal/installation detection terminal Hi when
eer vet | DCP removed; Low when DCP installed
Key insertion input terminal Low when EJECT key
71 | KEY INT or FUNC(POWER) key pushed When this terminal
turns Low, key A/D terminal detects the key pushed
72 | GND
73 | PHONE INT
BLINKING LED
MUMIA AA] w wn ‘ >
wo SEAM Bw] MY] ‘©
| Input terminal for phone interrupt/cellular
REG CPU | | Regulator terminal for CPU power supply. Connected
to pass con against noise
74
hse |= [ow
76 | X2 ~— | Connecting terminal for oscillating crystal for main
TT { XI I | system clock
REG OSC | | Power supply regulator terminal for oscillator.
9
Connected to pass con against noise
| = | Power supply terminal
0 RESET I ci ae will stop by turning this terrninal to

Clarion ARX7370R Specifications

General

Brand	Clarion
Model	ARX7370R
Category	Cassette Player
Language	English