Kenwood KRA 5070 Service Manual

Page 2

KR-A4070/A5070 [E, T, G]

CONTENTS/ACCESSORIES

CONTENTS/ACCESSORIES... 2 WIRING DIAGRAM ..............................
EXTERNAL VIEW KR-A5070... . 3 PC BOARD(Component side view)
DISASSEMBLY FOR REPAIR .. .4 SCHEMATIC DIAGRAM ..
BLOCK DIAGRAM .............. .5 EXPLODED VIEW .....
CIRCUIT DESCRIPTION 6 PARTS LIST ..............
ADJUSTMENT ....................................................... 11 SPECIFICATIONS ...........
ACCESSORIES

'r type antenna ................... (1) AM loop antenna... Loop ankenna holder" ..

(T90-0176-05)

(T 90-0805-08)

(A70-0985-08)

Antenna adaptor ................ (1)

Remote control unit (RC-H0503).

(T 90-0804-08)

(J19-281 5434)

®

Battery cover
( A09-0170-08)

cu

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RC R0503

Model: RC-RDSOS
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INSTRUCTION MANUAL

Parts No. Destinallon
ENGLISH 860-2114-08 T, E
FR E/DUC/ITA/SPA 560-2115-08 E
GERMANY 860-2116-08 E. G

Page 10

KR-A4070/A5070 [E, T, G]

10

5-3. Pin function

CIRCUIT DESCRIPTION

No. Name IIO Function
1-6, 7 GS~GI 0. GI 0 FL grid 5-10, and 1.
8 Von - Power Supply.
9 CLK (Common) 0 Clock for control IC. (Analog sw/PLL IC/Electromc VOL)
10 DATA (Common) 0 Data for control IC. (Analog sw/PLL IC/Electronic VOL)
11 CE (PLL) O PLL CE.
12 W O Amplifier mute control. ('H' : Mute OFF, 'L : Mute ON)
13 POWER 0 Power relay control. ("H" : Power ON, 'L" : Power OFF)
14 SP-B 0 Speaker B relay control. ('H" : SP-B 0N, L : SP-B OFF)
15 SP-A 0 Speaker A relay control. ('H : SP-A ON, I." : SP-A OFF)
16 sP-S - Not used (open).
17 WT- | p~com reset.
18 VOL LED - Not used (open).
19 AI'I' (Tuner) 0 Attenuator control ('H :Al'l' ON, 'L : ATT OFF)
20 GND - A/D power supply.
21 CE | u-com CE.
22 S-TEEO | Stereo signal detection. (H' : Monaural. L : Stereo)
23 E I Tuning signal detection. (H : Not tuned, L : Tuned)
24 DATA (RDS) I RDS data.
25 START (RDS) | RDS start bit.
26 IFCNT (PLL) I IF CNT data (PLL DO).
27 4/5 SWITCHING 1 Speaker impedance switching. ("H" : 40, L" : 8(2)
23 SLEVE L | Signal level (AID).
29 AVDD - AID power supply.
30 AVREF -- A/D reference voltage (+5V).
31 PROTECT | Protection detection. ('H': Protection, L' : Normal)
32 NC - Open.
33 V55 - GND
34 X1 | 4.19MHZ oscillator.
35 X2 0 4.19MH2 oscillator.
36 l C (DELAY |C<1 & 2) - Not used.
37 A0 (DELAY IC-I & 2) - Not used.
38 DIN (DELAY IC-1) - Not used.
39 DIN (DELAY IC-Z) - Not used.
40 SCI (DELAY IC-I & 2) - Not used.
4) 5. DATA 1/0 8-bit system data.
42 S. BUSY I/O 8-bit system busy.
43 RESET (RDS) O RDS reset.
44 CLK (R03) | RDS clock.
45 OT MUTE1 0 Data mute 1. ("H' : ON, 'L' : OFF)
46 STB IEIBCI)CEI VOL) - Not used.
47 REMOCON | Remote controller input,
48 GND -
49 DT MUTEZ - Not used.
50, 51 ENC-B, ENC-A | Encoder input. (50 pm : Encoder B. 51 pin : EncoderA)
52 VDD - Power supply.
53 MUTE1 O Selector MUTE control. (H'z MUTE OFF, L' I MUTE ON)
54 5TB (Analog sw) 0 Analog sw STB.
55~60 KR5~KRO | Key return 5-0. (Pin 56 : Not used)
61 ~68 P16/KS7~P9/KSO 0 FL segment 16~9 / Kev scan 7~0.
69, 70 P8) P1 0 FL segment. (69 pin : Segment 8, 70 pin : Segment 1)
71 -30V (VLOAD) - FL drive power supply.
72-77 P2~P7 0 FL segment 2~7.
7B~BO (32-64 0 FL grid 2~4.