Circuit Description - Kenwood KRF-X7775D Service Manual

KRF-X7775D/X7775D-S/VR-5080/5090
1. Initialization
1-1 The Initial Setting
• Insert the power cord to AC wall outlet by pressing the "ON/STANDBY" key.
2. Destination List of Tuner
SET TYPE
TYPE
K1
K, P, R
1700
Y, M, I, K2
C, V 1610
K4
K, P 1700
RBDS
Y, M, I,
C, V,
E1
E, X, H
E3
E, T
RDS
3. Conditions according to the models or destination
3-1 Distinction of Destination
: u-com (X13,IC3) Port 54
Type Voltage : Max 5.0V
K2
K1
K4(RBDS)
E3(RDS)
E1
4. Tuner Preset Memory
P.ch K1
1 FM 98.3M FM 98.3M
2 FM 87.5M FM 87.5M
3 FM 89.1M FM 89.1M
4 FM 108.0M FM 108.0M
5 FM 90.0M FM 90.0M
6 FM 87.5M FM 87.5M
7 FM 87.5M FM 87.5M
8 AM 1610K FM 87.5M
9 AM 1700K AM 1610K
10 AM 1000K AM 1000K
11 AM 630K AM 630K
12 AM 1440K AM 1440K
13 FM 106.0M FM 106.0M
14 AM 530K AM 530K
15 FM 87.5M FM 87.5M
16 FM 98.0M FM 98.0M
17 FM 98.5M FM 98.5M
18 FM 87.5M FM 87.5M
19 AM 990K AM 990K
20 FM 97.4M FM 97.4M
6

CIRCUIT DESCRIPTION

RECEIVING CHANNEL
BAND
SPACE
FREQUENCY RANGE
FM 87.5MHz-108.0MHz 100kHz
AM 530kHz-1700kHz 10kHz
FM 87.5MHz-108.0MHz 100kHz
AM 530kHz-1610kHz 10kHz
FM 87.5MHz-108.0MHz 100kHz
AM 530kHz-1700kHz 10kHz
FM 87.5MHz-108.0MHz 50kHz
AM 531kHz-1602kHz 9kHz
FM 87.5MHz-108.0MHz 50kHz
AM 531kHz-1602kHz 9kHz
0~0.52
1.61~2.49
2.51~3.39
3.41~4.45
4.47~5.00
K2 K4 E1
FM 98.3M FM 98.3M
FM 87.5M FM 87.5M
FM 89.1M FM 89.1M
FM 108.0M FM 108.0M
FM 90.0M FM 90.0M
FM 87.5M FM 87.5M
FM 87.5M FM 87.5M
AM 1610K FM 87.5M
AM 1700K AM 1602K
AM 1000K AM 999K
AM 630K AM 630K
AM 1440K AM 1440K
FM 106.0M FM 106.0M
AM 530K AM 531K
FM 87.5M FM 87.5M
FM 98.0M FM 98.0M
FM 98.5M FM 98.5M
FM 87.5M FM 87.5M
AM 990K AM 990K
FM 97.4M FM 97.7M
0 : Pull down,1:Pull up
IF PLL
+10.7MHz 25kHz
+450kHz 10kHz
+10.7MHz 25kHz
+450kHz 10kHz
+10.7MHz 25kHz
+450kHz 10kHz
+10.7MHz 25kHz
+450kHz 9kHz
+10.7MHz 25kHz
+450kHz 9kHz
3-2 Distinction of Models : u-com (X13,IC3) Port 53
Models
VR-5080
VR-5090
VR-5700
VR-5900-S
KRF-X9995D/D-S
KRF-X7775D/D-S
KRF-X9995D-S
(M/X TYPE)
KRF-X7775D-S
(M/X/V TYPE)
✽ Switching of RF or Front IR and Rear IR Receiver Terminal.
E3 P.ch K1
FM 98.3M 21 AM 530K
FM 87.5M 22 FM 87.5M
FM 89.1M 23 FM 87.5M
FM 108.0M 24 FM 87.5M
FM 90.0M 25 FM 87.5M
FM 87.5M 26 FM 87.5M
FM 87.5M 27 FM 87.5M
FM 87.5M 28 FM 87.5M
AM 1602K 29 FM 87.5M
AM 999K 30 FM 106.0M
AM 630K 31 FM 87.5M
AM 1440K 32 FM 87.5M
FM 106.0M 33 FM 87.5M
AM 531K 34 FM 87.5M
FM 87.5M 35 FM 87.5M
FM 98.0M 36 FM 87.5M
FM 98.5M 37 FM 87.5M
FM 87.5M 38 FM 87.5M
AM 990K 39 FM 108.0M
FM 97.7M 40 AM 1000K
✽
Voltage : Max 5.0V
NO 0~0.37
YES 0.39~1.10
YES 1.12~1.84
YES 1.86~2.49
YES 2.51~3.14
YES 3.16~3.88
NO 3.90~4.61
NO 4.63~5.00
K2 K4 E1
AM 530K AM 530K AM 531K
FM 87.5M FM 87.5M FM 87.5M
FM 87.5M FM 87.5M FM 87.5M
FM 87.5M FM 87.5M FM 87.5M
FM 87.5M FM 87.5M FM 87.5M
FM 87.5M FM 87.5M FM 87.5M
FM 87.5M FM 87.5M FM 87.5M
FM 87.5M FM 87.5M FM 87.5M
FM 87.5M FM 87.5M FM 87.5M
FM 106.0M FM 106.0M FM 106.0M
FM 87.5M FM 87.5M FM 87.5M
FM 87.5M FM 87.5M FM 87.5M
FM 87.5M FM 87.5M FM 87.5M
FM 87.5M FM 87.5M FM 87.5M
FM 87.5M FM 87.5M FM 87.5M
FM 87.5M FM 87.5M FM 87.5M
FM 87.5M FM 87.5M FM 87.5M
FM 87.5M FM 87.5M FM 87.5M
FM 108.0M FM 108.0M FM 108.0M
AM 1000K AM 1000K AM 945K
E3
AM 531K
FM 87.5M
FM 87.5M
FM 87.5M
FM 87.5M
FM 87.5M
FM 87.5M
FM 87.5M
FM 87.5M
FM 106.0M
FM 87.5M
FM 87.5M
FM 87.5M
FM 87.5M
FM 87.5M
FM 87.5M
FM 87.5M
FM 87.5M
FM 108.0M
AM 945K