Yamaha HTR-5635 Service Manual page 51

A B
SCHEMATIC DIAGRAM (OPERATION)
1
2
IC701: LC75712E FLD
FL Display Driver
AM1
CG 1
DI 64
ROM 2 AM2
DC
CL 63 SHIFT REGISTER
RAM
CG
CE 62
RAM
3
35 AM35
36 AA1
ADDRESS ADDRESS AD
VDD
60 AA2
REGISTER COUNTER RAM 37
38 AA3
AA4/G16
VSS 57 39
BLINKCYCLE BLINK
40 AA5/G15
REGISTER
GENERATOR
41 AA6/G14
VFL 55
AA7/G13
42
DISPLAY
DISPLAY
43 AA8/G12
REGISTER CONTROL
RES 61
44 G11
G10
45
DUTYCYCLE DUTY
REGISTER GENERATOR
TEST 56
GRID GRID
REGISTER CONTROL
INSTRUCTION
CONTROL
DECODER
G2
53
OSCI 59 TIMING
OSC DIVIDER G1
GENERATOR 54
OSCO 58
4
5
L
6
7
8
9
C D E
IC741, 742: µPC4570G2
Dual OP-Amp
OUT 1 1 8 +V CC
–IN 2 7 OUT
1 2
+ – + –
+IN 1 3 6 –IN 2
–V 4 5 +IN
CC 2
4.9 4.9
~ ~
~ ~
11.9
0 5 8
7 0
0 6
0 2
1 0
0 3
4
-12.0
11.9
8 3 0
0 1
2 0
6 0
5 0
0 7
4
-12.0
F G
x: NOT USED
O: USED / APPLICABLE
FL DISPLAY
~
~ ~
~ ~
~ ~
~ ~
~ FL DRIVER ~
~
~ ~
~ -27.4
~ ~
~ -27.4
~ ~
~ ~
~ ~
~ ~
~ ~
~ ~
IR REMOTE
to FUNCTION (1) to FUNCTION (1)
Page 49 I5
Page 49 I5
H I J
# All voltages are measured with a 10MΩ/V DC electric volt meter.
# 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.
AC
5.8
4.9 4.9 4.9 4.9
-20.4
~ ~ ~
~ ~ ~ ~
-28.1
4.9 4.9 4.9
~ ~ ~
~ ~ ~
K L
HTR-5635
51