Kenwood KACX 520 Service Manual

Page 2

r\
\J

KAGPSSZO(K)CINT1P 02.3.1110:34AM «>31 +
KAC-PS520/X520

MICROCOMPUTER'S TERMINAL DESCRIPTION

(x09-) IC11 : u-COM

P331. PORT NAME IIO FUNCTION OPERATING CONDITION
1 W 0 Controls small-amount current. "L" : SW 5V on.
2 . . . _
3 FAN 0 Controls fan rotation. "H" : Fan on.
4 - . - _
5 D VOLTAGE | Detects class-D over-voltage. "L" : Over-voltage detection.
6 V DOWN I Detects momentary power down. "H" : Momentary power-down detection.
7 W | Detects class-D over-current. "L" (Class-D power on) : Over-current detection.
8 m | Detects class-AB over-voltage. "L" : Over-voltage detection.
9 AB CURRENT I Detects class-AB over-current. "H" : Over-current detection.
10 BLUE 0 Controls BLUE of variable illumination. "H" : Illumination on.
11 GREEN 0 Controls GREEN of variable illumination. "H" : Illumination on.
12 RED 0 Controls RED of variable illumination. "H" : Illumination on.
13 TEST - - _
14 m - Resets. "L" : Reset.
15 XIN - - -
16 XOUT - - -
17 V88 - - -
18 VAREF - A/D reference. -
19 ADIN 1 | Detects temperature. "H" : Unusual temperature detection.
20 ADIN 2 | Detects temperature. "H" : Unusual temperature detection.
21 ADIN 3 | Detects temperature. "H" : Unusual temperature detection.
22 ADIN 4 | Detects temperature. "H" : Unusual temperature detection.
23 - ' -
24 BASS 12dB I Stabilizes BMS +12dB. "H" : BMS +12dB stabilization.
25 BASS REMO | Being remote-controlled from BMS head unit. "H" : remote control available.
26 BASS OFF | Releases boost. "H" : Boost off.
27 D POWER 0 Controls class-D amplifier. "H" : Class-D amplifier on.
28,29 - - - -
30 POWER 0 Controls power amplifier. "H" : SW 14.4V on.
31 COM HU | Measures the head unit pulse. -
32 OFFSET CON 0 Controls bass boost frequency offset. "H" : Offset on.
33 BASS CON A 0 Controls bass boost frequency offset. .
34 BASS CON B 0 Controls bass boost frequency offset. -
35,36 - - - -
37 STAND-BY | Cancels step mode by P-CON on. "L" : P.CON on or BACK-UP over-voltage detection.
38,39 ' ' -
40 VDD - VDD. -
41 TACT SW | Switches color. "H" : SW on.
42 m 0 Controls driver stages. "L" : Mute on.
43 m 0 Controls amplifier input mute. "L" : Mute on.
44 - . - _

Page 8

KAC7PSSZO(K) TNTZP 02.3 11 10:35AM \°~/ 3 /\

CAUTION: For continued safety, replace safety critical com-

___ I onents onl with manufacturer's recommended arts refer
_| . n . . . . .
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Q75 H203 H | to parts list). A: indicates safety critical components. For
5 33 D53 07 I continued protection against risk of lire, replace only with
SWSV E 205100 same type and rating luse(s). To reduce the risk of electric
cm Rm Rm CM 5(- E g ,. I shock, leakage-current or resistance measurements shall be
-<- ,_ o . .
B mm 1500P 10 in ISOOP me Q I carried out (exposed parts are acceptably Insulated from the
%¢a% 122w 122w ,, g EX supply Circuit) before the appliance IS returned to the cus-
049 05i 053 3 7' N" I tomer
2 2 0,22 0 22 3 n2 K o LIV R206 100 '
x 3 R209 ciia ciiA R210 3 F I
éfi :38 D60 UT 10 ISGDF 1500P 10
" N l i/2w 1/2W L l
W h a: - - -
- .n m
V'x NX §§ n n 0119 0120 | I
E a g I; 660L163 650L163 D55 D56 I
+ +
m x 45.71/ 46.7V 47.01/
g g - 73 -=' 47.1w I 28A1123 2802631 DTA124ES
a x . 13K D62 R216 n; I 28A1534A 2803940A
E N 10K RM Rm '1 28A733(A) 280945(A)
m > g R m m | 28A965
m .n a: E
GK 5 m; 0115 0115 I 28A992 .9
K 0122 4700 56 4700 56
641,1, 47u25 034 [182 + u + u I 28C1845 CB
060 2 N 335: w + 3% 3 2302235 E
0124 3-
10u16 V i/:3 m 3? 47m 48.1w + I
s + N g
«x 'W W 2 ., we w s :2 9 '
gm iNVEHTER §E g ' $2 ~@ I
5; E-fi use I DTA124EK 2804137
m 085 "5' I DTC124EK
in 15.4V C125 0126
+ a 8 47u25 47.25 I 2SC2412K
I 7 r 0i27 0126 I
1 Iowa * * 10u16 B
+E +5
9 + a; I
+3 +5 I
A; H; _ J E
a B r c C
:E :5 75% 8 3. I
.5 .5 o I
E
swsv $9 E I
2SB1548 28A1037K
+5v +5v l /,
> c \
r L Ex gr 3% 2 g z | \
09504;" v~o' vvo :o :o + 3
8 u 09 a as + 08 . s
R175100K " +5 0N3 151)
2
043 046 R239 22K ms 4); an E
34)- 0104 5,
L? $ 5% §§ . 5% a,i E g (Em-1751415)
K. r w z D66 062 122209 g E 0N4
. "1 w7%+
2% 3 gm; gé 065 3 {3439531505, TC4052BF NJM4565M
-q 7
E 2 - § '12:: 1'3 I /12 NJM5532MD
m i. / 1/ s/\
~45 .0 7 @211?
e n 30A . ,
F134 273 053 055 D (Fézcgis-os) §% ' M .
100K 50v H3 2,2K 3-4 929 +5). V w:;,
x 3 53"- 58% 53 ms Be BAT-r
R165 W $2 a? 6° Eu 6'; + +
6ND
fix 100K
F 5 FAN INPUT SIDE F-CON
K SWITCHlNG MOMENTAFlY
X é) 2x 33* VOLTAGEDOWN Lch+
,g g E3} DETECTOR ; X u INPUT SIDE N o ._ Lch. UPC494GS PST9130NR
i 5% E S? g 2 use F1245 §s OVER. mi 8 - Rch-
K 048 fi 22K VOLTAGE-DOWN 3,4 J
7 DETECTOR um. i-- Rd»
045 053 Q Km
+E g
o (167
g; § a? i g §§ 066,69 D419
ms "'59 ' " ° to $38 $3; REES.
2: R170220 g- z" 09 izm UT" IPI
951 070
5 159560 05 N COMMUNICATION
5 3g DETECTOR TC4W66F
H254ioa LI" 070 H250
\ 27K R249 4,7K R271 5
> R160 R268 092 5,0
m
3 101/2W ioi/2w 0.047 x r x m mwl aw in s
a: a a s 0 m-W-M '-\§§ §§8 E§I§28 4
> N c m a x
Eié Eé Eéié ééé ___:______________ I
> 0103 0i02 cm s g; a F (X09-)(B/2) KAc-Psszo/xszo (E/K,M.J)
E 0.01 0.01 001 E E E _ _ _ _ _ _
" THa TH2 THi iCNZ J.
4 4 A
E. 2.2K a. 2.2K % 22K
N N in 3 3 3
5 E g 2 2 2
z n: m §S £6 _
us Do
SWSV SWSV I swsv» 1 1
T 0N1