Microcomputer's Terminal Description - Kenwood KDC-MPV5025 Service Manual

QQ
3 7 63 1515 0
Ref. No. Application / Function
Q41 SW Regulator Control
Q101 Composite signal buffer
Q151 DSI Driver
Q152 Panel 5V SW
Q153,154 ILL Control
Q201 Noise buffer
Pre and NF Mute SW
Q350
(not always Pre and NF)
Q351 Pre / NF Mute SW
Q352 Pre / NF Mute SW
Pre and NF Mute SW
Q354
(not always Pre and NF)
Q355 Pre Mute SW
Q356 Pre Mute SW
TE
L 13942296513

MICROCOMPUTER'S TERMINAL DESCRIPTION

SYSTEM MICROCOMPUTER : UPD703030GC044 (X34 : IC1)
Pin No. Pin Name
1 PLL CLK
2 Not used
3 PANEL-DET
4 IC2 SDA
5 IC2 SCL
6 VDD
7 VSS
www 8 FLIP-DET
9 BEEP
10 REMO
.
R QUAL
11
Not used
COMPONENTS DESCRIPTION
DSI lights when the base is "L".
DSI turns off when the base is "H".
DSI turns on and off when panel is taken off.
When the panel is attached, the base goes "L", turning the Tr ON to supply 5V to the panel.
When panel is taken off, panel 5V cut off.
ILL lights when the base of Q153 is "H".
Drives the Pre and NF Mute sw (Q351,355) when the base is "L".
Mutes the Pre Rear Lch or NF Lch when the base is "H".
Mutes the Pre Rear Rch or NF Rch when the base is "H".
Drives the Pre and NF Mute sw (Q352,356) when the base is "L".
Mutes the Front Lch when the base is "H".
Mutes the Front Rch when the base is "H".
I/O Application
I/O CLK output terminal to F/E
O
I Panel DET terminal
I/O DATA input/output terminal with E-VOL
I/O CLK output terminal to E-VOL
-
-
I Flip DET terminal
O BEEP output terminal
x ao
y
I Remote control input
i
I RDS decoder QUAL input terminal
O Destination other than E and E2
8
Operation / Condition / Compatibility
Q Q
3 6 7 1 3
Truth
value table
No panel DET : L, Panel DET : H
L : Panel DET, H : Panel flippable
u163
.
KDC-MPV5025/MPV525
KDC-MPV7026/WV6027
2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
Processing Operation Description
m
co
9 9
2 8 9 9
5