Circuit Description - Kenwood KRF-V7771D Service Manual

KRF-V7771D/V8881D/VR-2080/2090
QQ
3 7 63 1515 0
1. The back up item and initialization
condition
1-1 Back up
• POWER ON/OFF
• VOLUME LEVEL
• AUDIO INPUT • SELECTOR : TUNER
• VIDEO INPUT • SELECTOR : VIDEO1
• SPEAKER A
• SPEAKER B
• CD2/TAPE2 MONITOR
• TONE
• LOUDNESS
• DISPLAY MODE
• RDS DISPLAY MODE
• DIMMER
• SURROUND MODE
• DSP MODE
• ROOM SIZE
• WALL TYPE
• EFFECT LEVEL
• MIDNIGHT MODE
• DISTANCE
TE
L 13942296513
• FRONT SP.
• CENTER SP.
2. Condition by the destination or model
TYPE BAND
FM 87.5MHz~108.0MHz
K1
1700
AM 530kHz~1700kHz
FM 87.5MHz~108.0MHz
K2
1610
AM 530kHz~1610kHz
FM 87.5MHz~108.0MHz
K4
1700 RBDS
AM 530kHz~1700kHz
FM 87.5MHz~108.0MHz
E1
AM 531kHz~1602kHz
FM 87.5MHz~108.0MHz
E3
AM 531kHz~1602kHz
RDS
FM L 65.0MHz~74.0MHz
Q1
FM H 87.5MHz~108.0MHz
RDS
AM 531kHz~1602kHz
K2/E1 is switched with only the setting of DSW1 (X11 : S601).
M
(DSW1 = 0 : K2 type, 1 : E1 type)
3. TEST MODE
www
[setting method]
While pressing INPUT SELECTOR key, plug the AC
power cord into an AC outlet (K, P type) or turn on the
.
AC POWER switch. When a set is set up in test mode
condition a set becomes the following condition.
Automatic POWER ON. All indicator tube (FL) and
9

CIRCUIT DESCRIPTION

: OFF
: -66dB
: ON
: OFF
: TAPE2 OFF
: OFF
: OFF
: DEVICE+DGTL/ANLG
: FREQUENCY
: DIMMER 1 (LIGHTEST)
: STEREO
: ARENA
: Med
: Med
: 3
: OFF
: FL/FR : 10ft
: C : 10ft
: RS/LS : 5ft
: SW : 10ft
: LARGE
: NORMAL
Channel
Reception
space
frequency
100kHz +10.7MHz
10kHz +450kHz
100kHz +10.7MHz
10kHz +450kHz
100kHz +10.7MHz
10kHz +450kHz
50kHz +10.7MHz
9kHz +450kHz
50kHz +10.7MHz
9kHz +450kHz
10kHz +10.7MHz
50kHz +10.7MHz
9kHz +450kHz
x ao
y
i
8
• SURROUND SP.
• SUB WOOFER
• SW Re-Mix
• INPUT LEVEL
• CH. LEVEL
• TONE BASS
• TONE TREBLE
• TUNING MODE
• PRESET MEMORY
QUENCY (Same value with KR-V999D/1090VR)
• LAST BAND
• FM LAST FREQUENCY
• AM LAST FREQUENCY
• LAST P. ch
• PTY SELECT MODE
• PTY SEARCH MODE
• TP SEARCH MODE
• RDS DISPLAY MODE
1-2 The initial setting
While pressing POWER key, plug the AC power cord
Q Q into an AC outlet (K,P type) or turn on the AC POWER
3 6 7 1 3
switch.
PLL standard
IF
frequency
DSW3
77
25kHz
0
10kHz
25kHz
0
10kHz
25kHz
1
10kHz
25kHz
0
9kHz
25kHz
0
9kHz
5kHz
5kHz
1
9kHz
0
CLIP INDICATOR LED are lighted. The other LED are
flashed.
A backup at the thing except ON/OFF of POWER is
u163
initialized.
[cancel method]
.
The power supply is turned off.
2 9 9 4 2 8
: NORMAL/WIRED
: ON
: OFF
: 0dB
: 0dB
: 0dB
: 0dB
: AUTO
: TEST MEMORY FRE-
: FM
: 87.5MHz
: 531kHz (CH. SP 9kHz)
: 530kHz (CH. SP 10kHz)
: [- -ch]
: OFF
: OFF
: OFF
: FREQUENCY MODE
1 5 0 5 8 2 9 9 4
(0 : Pull down, 1 : Pull up)
Diode sw
DSW2 DSW1 DSW0
76 75 74
0 0 0
0 0 1
0 1 0
0 1 1
1 0 1
0 1 1
0 X 1
m
co
9 9
2 8 9 9