Fl - Yamaha RX-V3800 Service Manual

A B C
RX-V3800/DSP-AX3800

FL 1/2

1
5.0 5.0
-23.4 -25.5
-23.5 -20.9
2
5.0 5.0
-27.5 -23.5
-21.4 -23.0
3
4
Page 132 A5
to POWER (1)_CB12
W9001
-21.9
5
-25.6
-29.3
6
7
8
9
# All voltages are measured with a 10MΩ/V DC electronic voltmeter.
# Components having special characteristics are marked s and must be replaced
with parts having specifications equal to those originally installed.
# Schematic diagram is subject to change without notice.
10
140
D E F
5.0 5.0
-23.5
-27.5
-26.7 -22.9
-27.3 21.4
-27.5 -23.5
-25.3 -21.4
-27.3 -23.5
-25.3
-23.3 FL DRIVER
-27.3
5.0 5.0
-25.3
-27.3 5.0
-27.5 -27.5
-25.3 0.1
-23.3 0.1
-27.0 -27.1 IC901
-19.3 4.9
-21.2 4.9
-19.3 2.4
-27.3 2.4
-27.5
0
-21.3 -21.5
-29.5 -23.5
-27.5 -23.5
-27.5 -22.9
-27.4
-21.4
-27.5
-27.5
-27.5 5.0
-25.5 0
-25.5
0
-23.4
4.9
-21.4
FL DRIVER 4.9
-23.4
2.5
-25.5
2.6
5.0
-27.5 0
-27.3
-27.0
G H I
2.5
0
0 0
0 0
0
0
0 0
0
0
0
0
0
-0.1 0
0
0
J K L
11.2
10.5
11.2
10.9
JK951
0.1
4.9
JK952
0
11.2
11.2
10.6
10.9
0.1
4.9
0
4.2
5.1
5.1
0
10.0
-9.2
0.1
0
2.6
-2.4 5.1
-9.7 4.9
CB968
9.5 0.1
0 5.1
W9002
Page 141 K5
to FL (2)_CB970
CB901
W9003
Page 130 K3
to OPERATION (4)_CB812
Page 130 B2
to OPERATION (1)_CB801
W9004
FL (1)
IC951: ADM222ARZ
High speed RS-232 line drivers/receivers
+5V INPUT
0.1µF
V 0.1µF
C1+ CC
+5V TO +10V
0.1µF V+
VOLTAGE DOUBLER
C1–
C2+
+5V TO –10V
V–
0.1µF VOLTAGE INVERTER
0.1µF
C2–
T1
T1 T1
IN OUT
TTL/CMOS RS-232
*
INPUTS OUTPUTS
T2 T2 T2
IN OUT
R1 R1 R1
OUT IN
TTL/CMOS RS-232
OUTPUTS INPUTS **
R2 R2
R2 IN
OUT
ADM2xx EN (ADM242)
SHDN (ADM222, ADM242)
GND
*
INTERNAL 400kW PULL-UP RESISTOR
ON EACH TTL/MOS INPUT
** INTERNAL 5kW PULL-DOWN RESISTOR
ON EACH RS-232 INPUT
M N
W9501
Page 126 C9
to FUNCTION (1)_CB405
FL (6)
IC901, 902: PT6302LQ-008
VFD driver/controller IC with character RAM
SG1
VDD CGROM
248 words x 35-bit
VSS DCRAM
16 words x 8-bit
SEGMENT
VEE
DRIVER
RSTB
CGRAM
8 words x 35-bit SG35
DIN
8-bit
CLKB SHIFT
REGISTER
CSB ADRAM AD1
16 words x 2-bit AD
DRIVER
ADDRESS AD2
SELECTOR
COMMAND
DECODER
WRITE READ
P1
ADDRESS ADDRESS
COUNTER COUNTER PORT
DRIVER
P2
CONTROL
CIRCUIT
DIGITAL
CONTROL GR1
GRID
DRIVER
DUTY
CONTROL GR16
TIMING TIMING
GENERATOR 1 GENERATOR 2
OSCO
OSCILLATOR
OSCI