JVC RX-508VBK Service Manual page 18

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RX-508VBK
RX-509VTN
|
Description of Major ICs
M
MN171202JPZ(IC401) : System Controller
1.
Terminal Layout
2.
Key Matrix
KEY INO
KEY INI
KEY IN2
KEY IN3
(pin2)
(pin3)
(pina)
(pin5)
KEY OUTO
TAPE2
KEY OUT 1
7
{pin7)
KEY OUT2
sg? [ ve [one [ore [=|
64
63
62
61
60
59
58
37
D4
56
i
i
KEY OUT3
AUTO
ag
07
53
(pind)
MEMORY
:
o8
52
KEY OUT4
cours
51
Ev OuT4 | scan
CHARACTER CHARACTER | CHARACTER
crows [ 1 5 MIN171202/PZ_ 2
KEY OUTS
"a
oat
°
my" |__|
e¥ono | ver | vito
is
<
KEY OUT6
;
$2
"a
{pin12)
$3
43
KEY OUT?
.
42
:)
40
KEY OUTS
SURR.
39
=-
3
38
wintay) | SUR | move
39
37
510
su
$12
$13
KEY OUT9
CENTER
KEY OUT 10
3.
Terminal Description
te)
no.| symbo!_|vo|
Function and Operations
JRo.| symbot_|vo|
Function and Operations
| T fvop
| ~|Powersupply
SS
S140
[FL segment control output
Pe kino 84 15
0 | FL segment control output
[Skint
[1 [Key matrix input
35
fstB2____ © [Strobe signal output (To 1C605)
Seas
Pa feina [key matrix input]
36 eK | 0 [Clock for data transmission (To 1C605) _
Spans [1 [key matrix input_______| 37 S81 [0 [strobe signal(Toicsat,321)
_—~+|
T6_[oi
[© | Fi grid control output (Key matrix out0)_| 38 [DATA [0 [Data output (Toiceos,341, 321) _|
H--Jo2
0 JF grid controfoutput (Key matrix outl) | 39 [ce [0 [Chip select signal (Toicio2)
|
T'S _[os 0 |FL. grid control output (Key matrix out2) | 40 [ck [© [Clock
output(Toici02)__————————id
L37Joa
[© JFL grid control output (Key matrix outa) | 41 [bi |] | [Data from PLL synthesizer (From iC102)_|
[10 [os
0 |r grid control output (Key matrix outa) [42 [D0 | O [PLL synthesizer control data (ToIC102)_|
HIT [06 J © [FL grid control output (Key matrix outs) | 43 [RESET | 1 [Resetsignalinput
H12[o7
TO ]FL grid contro! output (Key matrix outé)_| 44 [RMIN [1 [Remote control signal input
HTS [os [0 ]FL grid control output (Key matrix out?) [45 INHIN [1 inhibitsignalinput
Hid ours —[o [key matrix output _________| 46 BTEREO__| 1 [stereo indication signal input____|
PTS[kouTs [0 key matrix output
| 47 JTUNED [1 |Tunedindication signal input]
[16 kOUTIO [0 [Key matrix output
| 48 KOMPIN [1 ]OCS signalinput
LTT JeouTi1__| 0 [key matrix output________| 49 Come.ouT] 0 |cs signal output ———SSSCS—~S
[18 [ve> | — [Power supply for FL Dsplay
| SO VOL- [0 |Volume control signal
P13 fs0_____[O]Fi segment controloutput
| 51 Jvol+ [0 |Volume control signal___———*d
[2051 [0 [FL segment controfoutput________| 52 )VOLUED_[Oindicatordrve
SSCS
[21 [s2_____[O]FL segment controloutput_
| 53 [RECEIVED [0 |indicatordrive———S—S
[22 [53____]O]FLsegmentcontroloutput______|
S@[PRO.LED [O|indicatordrve
Sid
[23 [s4____ [0 |FL segment controloutput
| 55 SCHED | O|indicatordrve
SSCS
[2a ]s5__[O]FL segment controloutput____
| 56 HALLLED |O|indicatordrve _——_+
[2556
[0 [FL segment controloutput______[ 57 JAC
O |Power primary control signal
|
TF $8 {0 | segmerteortoctot
[8 [MUTE [Tuner mueng ert
Lit ft
FC Segmiert contol ONL
STMUTE | [Toner mubng contol
|
[2B 9
]O|FLsegmentcontroloutput__
| 60 |GND___|—|ConnectedtoGND_____——S~sS
[235100 |FL segment control output
61 INC____| - JNonconnection
SY
[30j511__To ]Fi segment controloutput______| 62 J@nDJ-JenD_————SS~SCSCSS—
[31 B12 [O [FL segmentcontrotoutput
| 63 sc | - |Clockoxcllationowtput_———S—~S
[32513 ___[O]Fisegmentcontroloutput___]
64 Josc__| ~ [Clock oscilationinput_____—
1-30 (No.20376)
RX-508VBK
RX-509VTN
3CHLOGIC
3
Hat.
PATA [~? |Shift
ne
ee
maces
NOISE ON/OFF | 4
$. ON/OFF
aK
resister
P2
P4 — SURR. ON/OFF
NOISE 1
5
WIDE
P3
PS
HALL
VSS
6
NORMAL
P6
VIDEO
NOISE2
7
C. ON/OFF
°7
VIDEO2
DELAY}
8
cLR
P8
SOURCE MUTE
DELAY2
9
STB
Po
3CH. LOGIC
DELAY3
0
cLK
P10
NOISE ON/OFF
NC
1
DATA
PIG
P11
NOISE1
P12
NOISE2
1B
P13
DELAY?
es
P14
DELAY2
PI6
~
3. Terminal Description
4.
Function
Princ. |___Fan]
Seria! data input
AL] * | ¥ | Data are inputed synchronizing the rising edge of the clock.
Pe eB
Clock input (When this
terminal is set low level,
-
The data in the shift resister are transmitted to the latch circuit.
The data outputed from parallel outputs.
all of the output become
low.)
The data in the shift resister are shifted synchronizing the rising
edge of the clock .(The data outputed from the latch circuit are
[14
«| __ Strobe signal input __|
signal input
fe
15 =
ih
Clear signal input
changed.)
5.
Function Table
SURROUND MODE
Port of IC605
HALL
OuT
freveef
» fetes
VIDEO CONTROL
Port of IC605
VIDEO 1 {VIDEO 2
Pe
te |e |
Powe ff |
EXCEPT
L
L
VCR, VIDEO
VOLUME CONTROL
Port of IC605
VOLUME | VOLUME}
VOLUME
uP
DOWN
LED
pete fete |
[oom [ef
e |
|
Se
ce
TEST TONE
DELAY TIME
L e
| feel
fe fe
foe
pw |e |
PRO | 3ch
ne
Logic |Loaic| WA
Led | LED
Port of
IC605
(No. 20376) 1-31

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