Kenwood RXD 520 S Service Manual

Page 6

RXD-500/7OO
CIRCUIT DESCRIPTION

1. Initialization

1-1 Setting of initial conditions
While pressing the [ENTER] key, plug the AC cord into the AC power outlet.
1-2 Initializing operation
- A microcomputer is initialized for start when the AC power is turned on while pressing the [ENTER] key. At that time, CD
mechanism and MD mechanism are also initialized.
- During the initial operation, the display shows INITIALIZE and after that the Clock blinks up on display.
1-3 Initial items and back up data

77 7 777 ITEMs 77 77 7 ITEM577 7
7 x-PowER 77 707F7I= 7 777 Fi7\7/|7777
>:<-VOLUME 77 1§77 77 77 LIMIT
>i MUTING'" 777 CE ':7 7 AUTO 7
-.><~EQ 77 OFF 77 7 7 77777TESTI7
>2<~EQ. MANU 777 FLAT77 77777 77 7 AM 127:7 00
AMP >. XSRS 737D 7 OFF 777 CLOCK KPROQEF 7 7 AM712 : CO 777
7 s. DIRECT 7 NQLE 7 TIMER x-PROLODE 77777 P7LAY7 77
>:<-INPUT SEL 77 7lUNER 7777 >:<-SOU7RCE 777 7T7UNER77
' ,, ,,70(-6dB)7L X'Fch , ,i, ,1 Li
L -17 W. A, jfixE 7, W, OFF ,
OFF >:<-OTT OFF
,, LEONE ,i, , L. SLEi ,7 ,QFF ,7,
>.'<'3D7LEVEL 7707 7 77 XDILECTION 777 PgRWARD7
>2Z >Z Xback up data fl" ,, ,, B
ACTIVE MODE STOP
PLAY MODE TRACK
7W REPEAT 77* OFF '
CD RANDOM (SEE
7 :L7AY MODE77 STOP 7777
TIME '* "WSINGLE

1-4 Mechanism initialization

1-4-1 CD mechanism
- Disc unclamps (traverse down)
- Rotary tray rotates (1/3 rotation)
- If a mechanism error occurs, C" is indicated On the display.
1-4-2 DECK mechanism
- When initial condition becomes NC for the third time, decide the error,
The error condition is displayed as "X on the display.
1-4-3 Error display

"or

Page 47

%,4cw_-M_L91_M_ c2

ma ms R28 R55, Res, R7575. an w5.e,1|.1745,54, _ cho,
Dams r12 F3 F5 Fl 14 m use 30 55 m 197 90 W21 sneawnfls 5&2 mm 17 2 E3 wnacnz
vEs AALZSDV 2,5AL2snv 2AL250V NostZAQZ 255sz 230mm 6.3K 91 430 vEs mx No yes vEs vEs NO no NO NO

56

mm m F3 F5 77 ~ , 056 , r1197 W2 7 W7 54 $1 52 cum,

4A L 250v 25A L 250v No N0

N0 N0 N0 no

91

mzsmass 5,2K
emsv MtzSV in my 25362 82 30 VES

vEs 25mm mK vs vs No
MLZWV 25st 2AL25UV N0 65K 91

N0 N0

Psi cm, 015, Rat-1, H51 nae, R75 R81 cmwv
Dams FLZ F3 7 14 w 056 so as 70 5 mm wz.7,sz 20' E3 wn cmz
no Mszv asumv NO 250243: 2551524 25mm 52K 31 430 vzs NO v25 NO v2 ves NO
013, ms, H29, :55, Res, we was, was, was. wm, cmo, cnzo,
Dana Ft: F3 F5 F7 4 15 055 an 56 7o ,7 50 R197 W2 W7 w7 5" WStWGZ 75 st 52 onws 7 2 e3 wuacem
YES 5mm taK YES YES
«2an asumv No No 2:01am 91 via vEs vs No No
No avzsmaea 5,2K 0 0 vEs N° 9 No No
5Av25v IAVESV M25flv (25024932531624 32 7 V55 YES N0 N0 N0 vs N0 N0 "0
vEs 25mm WK YES - yes No yes -
umsov 25AL250V 2AL250V No sax 91 NO YES VESi ves YES VES No
ma, a; nzsi H55, H69, H15 R89 W27. wssmne, mm cnzu,
Dams :12 F3 F5 :7 M 3 05$ 30 as 70 .73 90 R197 173,115 steam suz 4, 2 53 mi cm:
yes MLzsov asuzsov uszv NO zsnzm 255mm 250189358X 9 m vss 10K vas N0 ves vss vss N0 Nd N0 NO
on, ma Rea R55 n99, Pas-7a. asst wssnnusm crm cum
name F12 F3 F5 F7 u 6 055 m, 56 m ,9, 90 W21 EIwumfls 51.2 _ 2. :3 WM cm;
as AALzsav 2,5ALzsuv zALzscv No 2302359 253559 f,§255D§§§93 sex 52 510 vss tax No vzs vs: yes No N0 No no

Dame m :3 F5 F1 on} , a,

M L 250v 2,5A L 250v No N0

NO or 25mm "7
s ex 62 em

M125V M IZSV 5A tzsv N0

vEs 25mm vEs N0

4A L 250V 2,5A L 250V 2A L250V N0

r, , m R55. R59, R75 R59, was-7. wAsumm, cmw
Dams rue F3 F5.7 0&3 0; 055 >73 m Hum Wins 51 32 2021 as w as":

No AALZSOV 2V5AL250V NO 2302339 2531559 250189368X 52 51a YES ND ves No views No vEs YES No

Dams m :5 F5 F7 , 055 g5 90 m7 w2:5- W7 we-

no new 2V5AL250V NO NO

«25mm 6.6K 32 am no no no VES N0

vzs 125v «125v 5A125V 25mm No 12K yes yes

ms. (115 m R55, nee. men R89. ws.s,n.i74e,sa. , cum
Dams H2 :3 :5 in U 3 use so as 70 m w wavfimamlmv175 31,2 cNun 2 saw CF12
VES MLZSOV 2,5ALzsov zALzsov NO 25mm 25mm mg: MK 62 m ves t2K no yes YES yes No N0 N0 N0 WW?
er3
XMM
-wm

G)

RXD-500/700(M) (6/7)
CAUTION: For continued safety, replace safety critical components only with man-
ufacturer's recommended parts (refer to parts list). A; indicates safety critical com-
ponents, For continued protection against risk of tire, replace only with same type
and rating fuse(s). To reduce the risk of electric shock, leakage-current or resis-
tance measurements shall be carried out (exposed parts are acceptably insulated
from the supply circuit) before the appliance is returned to the customer

The DC voltage is an actual reading measured with a high impedance type volt-
meter as the AM/FM signal generator is specified to the conditions as shown in the
list below. The measurement value may vary depending on the measuring instru-
ments used or on the product. The value shown in ( ) is actual reading mea-
sured in the AM made.

RXD-500/700

YS9-2540-21