KRF-V7030D/V8030D/VR-407/409
4
CIRCUIT DESCRIPTION
(0 : Pull down, 1 : Pull up)
TYPE BAND
Reception
frequency
Channel
IF
PLL standard
Diode
space
frequency
DSW3 DSW2 DSW1 DSW0
K1
FM 87.5MHz~108.0MHz 100kHz +10.7MHz 25kHz
0000
1700
AM 530kHz~1700kHz 10kHz +450kHz 10kHz
K2
FM 87.5MHz~108.0MHz 100kHz +10.7MHz 25kHz
0001
1610
AM 530kHz~1610kHz 10kHz +450kHz 10kHz
E1
FM 87.5MHz~108.0MHz 50kHz +10.7MHz 25kHz
0011
AM 531kHz~1602kHz 9kHz +450kHz 9kHz
E3
FM 87.5MHz~108.0MHz 50kHz +10.7MHz 25kHz
RDS
AM 531kHz~1602kHz 9kHz +450kHz 9kHz
0101
M
K2/E1 is switched with only the setting of DSW1
00X1
(DSW1 = 0 : K2 type, 1 : E1 type)
This unit works backup by microprocessor if power is off. The
microprocessor carries out the power-off-checking by 1ms. It
sets up the initialized data if the backup data is destroyed.
Also plug in and out the power cord from the outlet with
pressing the power switch for initialization.
1. Backuped Data
A) Amp
Power on/off
Selector
Device preset
Video output
Speaker A relay on/off
Speaker B relay on/off
Volume level
Bass, Treble level
Input level(every inputs)
Subwoofer yes/no
Dimmer level
Monitor no/off
MD/TAPE mode
Video2/Monitor mode
b)Surround function
Listen mode(input:analog/PCM only)
Speaker setup
Distance(how far)
Left, Right, Center level
Surround level
Subwoofer level
Input mode(CD,Video2/3)
Midnight on/off(CD,Video2,3)
C)Tuner
Band
Preset channels
Receiving frequency
Auto/manual
2. Condition by the destination or model
3. Main microprocessor: X14,IC1(MN101C35DRA)
3-1 Microprocessor periphery block diagram
/SD, /STEREO, CH. SPACE
S. LEVEL
TUNER
LC72131
PLL. DO, PLL. DT, PLL. CK,
PLL. CE
PROTECTION
THERMAL. SENS, PROTECTION1
PROTECTION2
A/D KEY
AD. KEY1, AD. KEY2
ENCODER
VOL. ENC. A, VOL. ENC. B,
SEL. ENC. A, SEL. ENC. B
MN101C35DRA
8MHz
OSC
X1
POWER. RLY, SPA. RLY, SPB. RLY
CENTER. RLY, SURR. RLY,
LIMITER, PACK. CONT
RELAY
STANDBY. LED, DTS. LED,
DOL. DIG. LED, PROL. LED,
3STEREO. LED,
CS. LED(DOWNMIX. LED)
LED
FL
11-MT-120GK
X14, ED1
REMOCON
X07, IC202
X07, IC201
X14, IC1
X07, IC106, 109/X08,IC12,14
SEL. DT, SEL. CLK, SEL. ST1,
SEL. ST2
NJU7313AM, NJU7311AM
X08, IC51
DSP. INTREQ, DSP. CDIN,
DSP. CDOUT, DSP. CCLK,
DSP. CS, DSP. PD
CS493263 or CS493253
X08, IC2
AK4527
CODEC. CDIN, CODEC. CDOUT,
CODEC. CCLK, CODEC. CS,
CODEC. PD, CODEC. DZF1
X08, IC5
DIR. CDIN, DIR. CDOUT, DIR.
CCLK, DIR. PD, DIR. ERR
AK4110
MUTE
/A. MUTE, /PRE. OUT. MUTE
/T. MUTE, /20dB. ATT
SERIAL
S. DATA, S. BUSY
X08, IC15
M62446FP
VOLDT, VOL. CLK, VOL. ST
X14, IC4
BU1923F
RDS. CLK, RDS. DATA
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Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
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