Yamaha DSP-AX620, Руководство по обслуживанию

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A B C D E F G H
1
2
3
4
5
6
I J K L M N
7
8
9
10
DSP-AX620
■
SCHEMATIC DIAGRAM (INPUT 2/2 & OPERATION 1/2)
* All voltage are measured with a 10M
Ω
/V DC electric volt meter.
* Components having special characteristics are marked
Z
and
must be replaced with parts having specifications equal to those
originally installed.
* Schematic diagram is subject to change without notice.
IC502 : LC75725E
FL Display Driver
DIMMER
TIMING
GENERATOR
GRID
CONTROL
TIMING
GENERATOR
DIVIDER
CLOCK
GENERATOR
DIGIT
DRIVER
ADDRESS
DETECTOR
LATCH
MPX
SEGMENT DRIVER
SHIFT REGISTER
BLK
VFL
OSCI
OSCO
G11 G10 G2 G1 S43
D1 CL CE
VSS VDD
S42 S2 S1
61
12 11 3 2 14 15 55 56
1,13
59
58
64 63 62 57 60
Conditions
• INPUT: DVD auto
• PROGRAM: PRO LOGIC DSP
IC501, 502 :
µ
PC4570G2
Dual OP-Amp
– +
OUT 1
–IN 1
–V CC
+V CC
OUT 2
1
2
3
4 5
+IN
1
–IN
2
+IN 2
– +
6
7
8
IC305–307 : CS3310-KSR
Stereo Digital Volume Control
MUX
MUX
CONTROL
REGISTER
SERIAL TO
PARALLEL
REGISTER
8
8
8
8 16
16
15
14
8
1
2
3
7
6
11
10
9
12 13 4 5
AINL
AGNDL
AOUTL
MUTE
ZCEN
CS
SDATAI
SDATAO
SCLK
AOUTR
AGNDR
AINR
VA+ VA– VD+ DGND
LEVEL CONTROL
TONE CONTROL
RL
L
L
C
11.9
9.2
0.8
0
0
0
0
2.6
0
0
0
–5.7
–5.7
–5.7
–5.7
–5.1 –11.9
–5.1
5.7 11.9
11.9
5.1
5.1
5.7
5.7
11.3
0 5.1
0 0
0
0
0
0
4.9
4.9
5.1
0
0
5.1
0
0
0
0
–5.1
0
0
0
0
0
4.9
4.9
5.1
0
0
5.1
0
0
0
0
–5.1
0
0
0
0
0
4.9
4.9
5.1
0
0
5.1
0
0
0
0
–5.1
0 5.1
0 –5.1
–5.1
0 5.1
0 –5.1
0 5.1
0 –5.1
0 5.1
0 –5.1
0 5.1
0 –5.1
11.8
0
0
0
–11.8
0
0
0
–11.8
0
0
0
11.8
0
0
0 1
7
8
6
7
8
1
3
2
5
4
3
2
6
5
4
FL DRIVER
MAIN CPU
RESET
4.9
4.9
–11.8
4.9
4.9
–11.8
4.9
4.9
–11.8
4.8
4.8
0
0
0
0
0
0
0
4.8
4.8
4.8
4.8
4.9
4.9
4.9
4.8
4.9
4.8
4.8
2.3
2.9
4.9
4.8
4.8
5.1
0
0
0
0
3.4
4.9 4.9 4.8 4.8
0 0
4.7 4.8 4.8
0 0 0
4.8
0
4.9 4.9 4.6 4.9 4.9 4.9
4.9 4.9 4.9 4.9 0.6 4.9 4.9
4.8
0 0 0 0 0 0 0
4.7 4.8 0.1
0.4
0.1
1.5
0 0
0
0
0
0
0
4.9 5.6
5.6
5.6
7.5
6.8
0
0.6
0
12.4
12.4 12.4
11.7
4.9
0.4
0.4
0 0
0
0 0
1.5
0
4.8
4.9 4.8
–24.4
–24.7
4.9
–21.5
–24.7
4.9
–14.8
–24.7
4.9
–14.4
–
17.9
–
19.8
–
19.6
–
21.2
–
27.8
–
27.8
–
17.6
–
17.7
–
27.8
–
24.4
–
27.8
–
24.4
–
29.8
–
10.9
–
14.4
–
17.9
–
27.9
–
20.9
–
27.9
–
11.1
–
11.1
–
27.8
–
27.9
–
27.9
–
27.9
–
24.8
–
24.8
–
24.8
–
24.8
–
24.6
–
24.7
–
24.6
–
24.5
–
24.6
–
24.6
–
19.8
–
19.8
–
7.8
–
14.8
–
21.5
–
24.7
–
27.9
–
20.9
–
27.9
–
11.1
–
11.1
–
27.8
–
27.9
–
27.9
–
27.9
–10.9
–27.8
–24.4
–27.8
–24.4
–27.8
–17.7
–17.6
–27.8
~
~
~ ~ ~ ~ ~ ~ ~ ~ ~
–
27.8
–
24.4
–
21.5
–
14.8
–
21.2 –
7.8
0
2.5 2.5 4.9
0
4.9 4.9 4.9
~ ~
~
~
~
~
~
–28.2
–24.5
–24.5
4.9
–24.5
–24.5
–24.8
–24.8
–24.5
4.9
–24.8
–24.5
4.9
–24.8
–20.5
–28.2
–24.6
–24.7
–24.6
–24.6
–24.6
–24.6
–28.2
A
B
w
e
e
CIRCUIT CHANGES BY MARKET. O : USED X : NOT USED
N. C
UPD784217AGF
RB501V
-40
0.047F
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
S8
S7
S6
S5
S4
S3
S2
S1
VSS
OSCO
OSCI
VDD
BLK
CE
CL
DI
S25
S26
S27
S28
S29
S30
S31
S32
S33
S34
S35
S36
S37
S38
S39
S40
S9 S10 S11 S12 S13 S14 S15 S16 S17 S18 S19 S20 S21 S22 S23 S24
VFL
G1 G2 G3 G4 G5 G6 G7 G8 G9
G10 G11 VFL S43 S42 S41
Point e -A (/RES : Collector of Q510)
Point e -B (S12 : Emitter of Q511)
V : 5V/div (S12), V : 2V/div (/RES)
DC, 1 : 1 probe, H : 1 sec/div
0V
0V
S12
/RES
AC CORD ON AC CORD OFF
Point
w
(Pin 38 of IC501)
V : 2V/div, H : 0.1
µ
sec/div
DC, 1 : 1 probe
0V
E-70/J-68
P-E69/J67
J-1
P-E69/J67
I-1
P-E69/J67
K-1
P-E69/J67
B-3
P-E69/J67
G-9
P-E72/J70
K-5