Service manual

★ All voltages are measured with a 10MΩ/V DC electronic voltmeter.
★ Components having special characteristics are marked
󱚡
and must be replaced
with parts having specifications equal to those originally installed.
★ Schematic diagram is subject to change without notice.
A
1
2
3
4
5
6
7
8
9
10
BCDEFGH I JKLMN
RX-V665/HTR-6260
118
VIDEO 1/3
IC308
IC307
IC306
IC303 IC303 IC303
IC303 IC302 IC301
IC301
IC301
CB301
IC305
IC305
IC301
IC302
IC302
IC302
CB305CB304
CB303
IC304
IC310
IC309
CB302
IC310
IC310
IC305
IC305 IC305 IC305 IC305
0
5.0
5.1
5.1
5.1
5.0
5.1
5.1
5.1
0
0
0
0
0
0
0
0
-4.8
0
0
-4.8
0
5.0
0
-4.8
0
0
0
0
0
0
00
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
5.0
0 0
0
2.5
2.4
5.0 5.0 0.8 5.0
2.5
2.6
5.0 5.0
5.0 5.0 2.0
5.0
0
0 0
0
0 0
-4.8
0 0
5.0 5.0
-4.8 -4.8 -4.8
5.0
0
0
0
5.0
0
0
0
5.0
-4.8
0
00
0
00
0
00
0
00
0
-0.6
5.0
0
0.8
5.0
5.0
-0.9
0.2
5.1
5.1
5.0
-0.3
-4.8
0.2
-0.9
0
0
5.1
0
0
0
0
5.1
0
0
5.1
0
0
0
0
0
-4.8
0
0
0
0
0
0
0
0
0
0
5.0
0
0
0
0
-4.8
-4.8
0
-4.8
0
0
0
5.0
5.0
5.0
0
0
5.1
0
0
0
3.4
3.4
5.1
0.2
5.1
POINT F XL301 (Pin 3 of IC309)
F
IC310: FHP3350IM14X
Triple voltage feedback amplifier
1
2
3
4
5
6
7
8
14
13
12
11
10
9
NC or DISABLE1
NC or DISABLE2
NC or DISABLE3
+Vs
+IN1
-IN1
OUT1
OUT3
OUT2
-IN3
+IN3
+IN2
-IN2
-Vs
IC305: LA73050-TLM-E
6-channel 75 ohms video driver
IC308: LC709004A-TLM-E
I/O-expander for microcontroller
Control logic
port 0 I/O buffer
Serial/parallel converter/shift register
I/O control/output register
DIN
VDD
DOUT
VSS
CLK#
CS#
RES#
P00 P07
2
14
15
19
3
4
21
24 17
port 1 I/O buffer
P10
P17
15 8
Serial
8-bits
latch
command
decoder
Horizontal
character
size
register
Horizontal
size
counter
+
parallel
converter
IC309: LC74782JM-8A16-TLMC
The on-screen display controller LSI
RST
CTRL3
CTRL2
SEP
IN
SYNIN
CVIN
CVOUT
SEPOUT
SEPC
VDD1
VDD1
NC
1
2
3
4
24
23
22
21
XtalIN
XtalOUT
CTAL1
BLANK
OSCIN
CHARA
SCLK
SIN
VDD2
CS
OSC
OUT
VSS1
5
6
7
8
9
10
11
12
20
19
18
17
16
15
14
13
Vertical
character
size
register
Vertical
size
counter
Horizontal
display
position
register
Horizontal
character
size
register
Horizontal
dot counter
31 inking
3nd inversion
control
register
31 inking
3nd inversion
control
register
31 inking
3nd inversion
control
register
Character
control
counter
Timing generator
Line
control
counter
31 inking
3nd inversion
control
register
Vertical
display
position
register
Vertical
dot counter
Horizontal
character
size
register
Horizontal
character
size
register
Horizontal
character
size
register
Display
control
register
RAM write
address
counter
Display RAM
Decoder
Decoder
Font RAM
Shift
register
Character output
control
Background control
Video output control
Synchronization
signal generator
131552421
22
20
19
18
17
3
7
6
12
24
23
10
11
9
1
8
IC306: NJM2581M
Video amplifier
13
VOUT1
11
VOUT2
9
VOUT3
8
GND
10
V+3
14
V+1
12
V+2
2
NEE1
4
VEE2
6
VEE3
7
PowerSave
5
VIN3
1
VIN1
3
VIN2
75
Driver
6dB
AMP
BIAS
75
Driver
6dB
AMP
BIAS
75
Driver
6dB
AMP
BIAS
REF
41
62
COM 3
74
55
INH 6
VEE 7
GND 8
Vcc16
215
114
013
312
A11
B10
C9
IC307: TC74HC4051AFEL
8-channel analog multiplexer/demulitiplexer
Logic Level Converter
OUT
C
IN
OUT
C
IN
A
B
C
INH
COM
0
1
2
3
4
5
6
7
IC301-303: TC74HC4053AF
Analog multiplexer/demultiplexer
INPUT STATES
INHIBIT
0
0
0
0
0
0
0
0
1
"ON" CHANNEL (S)
0X, 0Y, 0Z
1X, 0Y, 0Z
0X, 1Y, 0Z
1X, 1Y, 0Z
0X, 0Y, 1Z
1X, 0Y, 1Z
0X, 1Y, 1Z
1X, 1Y, 1Z
NONE
C
0
0
0
0
1
1
1
1
X
B
0
0
1
1
0
0
1
1
X
A
0
1
0
1
0
1
0
1
X
BINARY TO 1-OF-8
DECODER WITH INHIBIT
LEVEL
CONVERTER
VCCINHIBIT
A
B
C
GND
VEE
0X
1X
0Y
1Y
0Z
X-COM
Z-COM
Y-COM
SW
SW
SW
SW
SW
SW
11
616
10
9
8
7
12
13
2
5
3
1
14
15
4
VIDEO IN
COMPONENT
VIDEO IN
VIDEO (1)
OSD
AV 2
AV 1
AV 3
AV 4
AV 5
AV 6
AV OUT
MONITOR
OUT
COMPONENT
VIDEO
VIDEO
OUTPUT
SELECTOR
OUTPUT AMP
VIDEO
INPUT SELECTOR
EXTERNAL I/O PORT
COMPONENT
INPUT SELECTOR
to DIGITAL_CB72
Page 113
H1
to OPERATION (2)_CB459
Page 115
G7