Circuit Description - Kenwood VR-505 Service Manual
Audio video surround receiver
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Also See for VR-505:
- Instruction manual (44 pages) ,
- Service manual (35 pages) ,
- Instruction manual (50 pages)
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1. Initial and Backup Function
1-1 Initial State
Below are set value if the microcomputer is initialized
when reset:
(1) AMP function initialization
• POWER
• Input Selector
• Preset device
• Visual output
• Speaker A relay
• Speaker B relay
• Volume
• BASS
• TREBLE
• INPUT LEVEL
• SOURCE DIRECT
• MONITOR
• VIDEO2/MONITOR
• MD/TAPE
• RF BAND
(2) SURROUND function initialization
• LISTEN MODE
• INPUT MODE
CD/DVD
VIDEO2
TE
L 13942296513
VIDEO3
DVD/6ch
• SUBWOOFER
2. Destination List of Tuner
SET TYPE
TYPE
BAND
K1
FM
K, P, R
1700
AM
Y, M, I,
K2
FM
C, V
1610
AM
K3
FM
1610
Y
RBDS
AM
K4
FM
K, P
1700
AM
RBDS
Y, M, I,
FM
C, V,
E1
AM
E, X, H
FM
E2
T
MW
LW
LW
E3
FM
E, T
RDS
AM
E4
FM
T
LW
MW
RDS
LW
FM L
Q1
Q
www
FM H
RDS
AM
FM L
Q2
FM H
Q
RDS
.
MW
LW
Y, M, I,
M
C, V
Y
Y
RBDS
CIRCUIT DESCRIPTION
POWER OFF (STANDBY)
TUNER
None
VIDEO1
ON
OFF
-66dB
0dB
0dB
0dB
0dB
0dB
VIDEO2
TAPE
BAND 1
STEREO
DIGITAL AUTO
ANALOG
ANALOG
DIGITAL AUTO
ON
RECEIVING
CHANNEL
FREQUENCY RANGE
SPACE
87.5MHz-108.0MHz
100kHz
+10.7MHz
530kHz-1700kHz
10kHz
+450kHz
87.5MHz-108.0MHz
100kHz
+10.7MHz
530kHz-1610kHz
10kHz
+450kHz
87.5MHz-108.0MHz
100kHz
+10.7MHz
530kHz-1610kHz
10kHz
+450kHz
87.5MHz-108.0MHz
100kHz
+10.7MHz
530kHz-1700kHz
10kHz
+450kHz
87.5MHz-108.0MHz
50kHz
+10.7MHz
531kHz-1602kHz
9kHz
+450kHz
87.5MHz-108.0MHz
50kHz
+10.7MHz
531kHz-1602kHz
9kHz
+450kHz
153kHz-279kHz
9kHz
+450kHz
87.5MHz-108.0MHz
50kHz
+10.7MHz
531kHz-1602kHz
9kHz
+450kHz
87.5MHz-108.0MHz
50kHz
+10.7MHz
531kHz-1602kHz
9kHz
+450kHz
153kHz-279kHz
9kHz
+450kHz
65.0MHz-74.0MHz
10kHz
+10.7MHz
87.5MHz-108.0MHz
50kHz
+10.7MHz
531kHz-1602kHz
9kHz
+450kHz
x
ao
65.0MHz-74.0MHz
10kHz
+10.7MHz
y
87.5MHz-108.0MHz
50kHz
+10.7MHz
i
531kHz-1602kHz
9kHz
+450kHz
153kHz-279kHz
9kHz
+450kHz
K2/E1 are decided by Tuner Destination Port 1 input.
(0=K2 type 1=E1 type)
K3/E1 are decided by Tuner Destination Port 0 input.
(0=K3 type 1=E1 type)
VR-505/506/507/509/510/517
8
• FRONT speaker size
• CENTER speaker size
• SURROUND speaker size
• DISTANCE
Cch
Sch
• LEFT level
• RIGHT level
• CENTER level
• REAR (SL,SR) level
• SUBWOOFER level
• MIDNIGHT
• CINEMA EQ
(3) TUNER function initialization
• BAND
• PRESET CHANNEL
• Frequency receive
K1/K2
E1
• AUTO MANUAL
1-2 Backup Function
Q Q
When the AC power supply is turned off, the receiver micro-
3
6 7
1 3
computer enters the backup mode. As a result, it will return
to the last state before the AC OFF when the AC power sup-
ply is turned ON again
Tuner Destination Port
IF
PLL
PORT3(68PIN)
PORT2(67PIN)
(CP205)
(W109)
25kHz
0
0
10kHz
25kHz
0
0
10kHz
25kHz
0
0
10kHz
25kHz
1
0
10kHz
25kHz
0
0
9kHz
25kHz
0
1
9kHz
9kHz
25kHz
0
1
9kHz
25kHz
9kHz
0
1
9kHz
5kHz
5kHz
1
0
9kHz
u163
5kHz
5kHz
1
1
.
9kHz
9kHz
0
0
0
0
2 9
9 4
2 8
LARGE
NORMAL
NORMAL
Fch 3.0m / 10ft
3.0m / 10ft
1.5m / 5ft
0dB
0dB
0dB
0dB
0dB
OFF
OFF
FM
" - - "
Each destination
minimum value
FM : 87.50 MHz
AM : 530 kHz
FM : 87.50 MHz
AM : 531 kHz
AUTO
1 5
0 5
8
2 9
9 4
0 : Pull down,1:Pull up
PORT1(66PIN)
PORT0(65PIN)
(W105)
(W106)
0
0
0
1
1
0
1
0
1
1
0
0
0
1
1
0
m
1
1
co
0
0
X
1
1
X
9 9
2 8
9 9
3
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