JVC RX-504VBK Service Manual page 25

Mi = MN171202JNU(IC401) : System Controller
1. Terminal Layout
KEYIN1
3. Pin Function Description
So yemcon fo, 7 KeYOUTS) | 37 Joaran__] 0 [SEA control data output (Toics0a)___
6 esxon op -(KevouTs) | 38 feue | 0 [Clock output (To 1C504)
C18 hoe | — [Powersupply forFL Display | 50 |wooer [0 | Changing the surround mode
FS fs [O|Ftseamentcontrofoutput [Si |wooa fof * —SSSSCSCS~—S
20k OT SSSSSCSSSCS~SS 2 ortzvs [0 [Changing the delay time for surround
ie ok ee
p20 le ot OCC ses OT SCS—SCSSCC'
P2345 oS Soran mein _[ © |STAND-BYIREMOCON indication signal |
Pa fe OL SSS BS mute | 0 | This is "H", when source is except tuner
P35 fan tol CSCS ron or [© [Output signal for backup (0 1CA21)
[26 ba fol OY
SB reser our [0 JReset signal is output. (Refer
to page 27)
27 kato 59 Trowen [0 [This signal turns the primaryrelay on.
pe fe fot SCS~S Jew [= | Connected to GND
P25 fis OST ne Won connection
P30 feo] + SCS 2 Jew __f = | Connected to GND
P31 jenna [ 1 [Rey matrxinput—_———S—S—~d Bosca = | lock oscillation output
P32 fem SSSCSSCS~* ose] = Jock oscillation input
RX-504VBK/RX-504VLBK
RX-505VTN/RX-SO5VLTN
2. Key Matrix
KEY INO KEY IN1 KEY IN2 KEY IN3
{pin31) (pin32) {pin33) (pin34)
KEY OUT 1
(pint3) POWER MUTE LOUDNESS | SURROUND
KEY OUT 2 | BALANCE BALANCE VOL VOL
(pini2) L R DOWN UP
KEY OUT 3
(pint 1) PHONO TAPE1 TAPE2
KEY OUT 4 CSRP CSRP
(pin10) NIPEO ON/OFF MEMORY
KEY OUT5 CHAR CHAR
KEY OUT 6 SEA SEA SEA
(pin8) ald agls REVERSE MEMORY DISPLAY
KEY OUT7 | SEAFLEQ SEA FLEQ SEA SEA
pin7) - + PRESET ON / OFF
KEY OUT8 } SEALEVEL | SEALEVEL DOLBY HALL
(pin6) - + SURR.
KEY OUT9 REAR REAR DELAY
LEVEL - LEVEL + TIME
(pin5)
STADIUM
(No.20220) 125