Technics SA-EH790E, Service Manual

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12 11 10 9 8 7 6 5 4 3 2 1
A
B
C
D
E
F
G
H
SH-EH790(E) FL CIRCUIT DIAGRAM
SCHEMATIC DIAGRAM-1
A
1 2 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 46 47
FL DISPLAY
44 45 49 50 53 48 54
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
KEY1 KEY2 SP
IN
SP
A
SP
B
SP
C
SA
CS
DSP
RST
DSP
CS
DSP
SNS
DSP
ACK
DSP
CK
DSP
DO
DSP
DI
JOGA JOGB CNVss RESET NC NC Vss XI
N
X
OUT
Vcc NC NC LED
CFO
LED
CFG
BR93
DA
T
A
BR93
CS
BR93 CK
SYNC
SA REQ
SA CK
SA DO
SA DI
LED SSS
LED DPL
LED SPO
LED SPG
LED 3DO
LED 3DG
LED MRO
LED MRG
LED VRO
LED VRG
P1
P2
P3
P4
P5 P6 P7 P8 P9
P10 P1
1
P12 P13 P14 P15 P16 P17 P18 P19 P20 P21 P22 P23 P24 P25 P26 P27 P28 P29 P30 P31 P32 P33 P34
7G
6G
5G
4G
3G
2G
1G
V
EE
CD & DECK DI
CD & DECK DO
CD & DECK CK
NC
CD REQ
DECK REQ
CD & DECK CS
AVss
VREF
REG IN0
REG IN1
FL CIRCUIT
A B C D E
FL601(A2BD00000041)
F G H I J K L M N O P W R S T U V Y Q X Z
R623
100K
C606
470P
C607 470P
C608 220P
X601
(4MHz)
1 3
2
n m k j i h f e d b a Z Y X
IC601
C2BBGF000434
SYSTEM CONTROL/
FL DRIVE
H I J K L M N O P Q R T V W X Y Z a b d e g h S U f i j m n p q r t
R622 100K
R681
2.2K
Q601
UN4211TA
RESET
R606
1K
R603
1K
R602
1K
R601
1K
R607
220
R608
220
R619
680
C602
6.3V1000
C610
0.01
C61
1
50V3.3
D605
MA165T
A
C613
16V22
C628
16V22
C612
16V22
C627
16V22
NOTE:
The number which noted at the connectors on the schematic diagram as
"SCHEMATIC DIAGRAM-1" or "SCHEMATIC DIAGRAM-2"
indicates the schematic diagram serial number located on the left corner in the schematic diagram.
C601
0.1
L601
10 H
D601
1SS291T
A
R682 0 R611 100
R609
2.2K
R610 3.3K
R616 1K
R617
1K
C609
0.01
D604
1SS291TA
R618 100K
R604
10K
R605
10K
D603
1SS291T
A
D602
1SS291TA
D655
D654
C603
1000P
R613
5.6K
R614
1K
R615 1K
R667
47K
A B C D E F G
A
B
C
D
E
F
G
H
I
J
K
L
M
N
P
S
T
U
V
W
R676
100K
R675 100K
R677 100K
R678 100K
R679 100K
R680 100K
R671 100K
R672 100K
R673 100K
R674 100K
n p q r t m j i h
g
f e d b a
O
Q
R
r
q
p
D652
MA165TA
C615
35V33
C614
16V10
D610
MA165TA
D609
MA165TA
R662
1K
C625
6.3V100
R664
330
R663
330
C616
35V33
R686
0
C604
1000P
C605
35V33
MA165TA
MA165TA
g
C626 0.047
IC602
M62457AFPE1
SPEANA AMP
1
2
13
3
4
5
6
7
8
9
10
11
12
2
1
3
4
5
6
7
8
FW602B
DSP DIO
SP INPUT
DSP CK
DSP ACK
DSP RST
DSP SNS
DSP CS
A.GND
CD REQ
CS
S CLK
S DATA
DECK REQ
SYNC
FL2
FL1
SA DATA
SA CLK
CS/ REQ
D.GND
+B(5.6V)
To MAIN
CIRCUIT(FW601A)
on SCHEMATIC
DIAGRAM-5/40-A,B
B
FW601B
To MAIN
CIRCUIT(FW602A)
on SCHEMATIC
DIAGRAM-2/9-H
B
C620
50V0.1
C621
50V0.1
R648 100K
R649 100K
C622
0.1
R650 100K R651
1K
C623
0.1
C618
0.01
C619
0.01
D606
MA165T
A
R624
180
R625
180
R626
180
R627
180
R628
180
R629
180
D617
SML79455C
(SUPER
SOUND
EQ)
D616
SML79455C
(CENTER
FOCUS)
D615
SML79455C
(VIR
TUAL
REAR
SURROUND)
D614
SML79455C
(MUL
TI
REAR
SURROUND)
D613
SML79455C
(SEA
T
POSITION)
D612
LNJ301MPUJAD
(DOLBY
PRO
LOGIC)
D61
1
LNJ301MPUJAD
(SUPER
SURROUND)
R655
10K
R654
10K
R653
4.7K
R652
4.7K
R657
47K
R661 22K
D607
MA165TA
R660
47K
D608
MA165T
A
R656
10K
R659
4.7K
R658
4.7K
Q602 Q603
Q604
Q602-604
2SC3311ATA
INTERFACE
R636
2.2K
R635
1.8K
R634
1.5K
R633
1.2K
R632
1K
R631
820
S606
(VIR
TUAL
REAR
SURROUND)
S605
(CENTER
FOCUS)
S604
(SUPER
SOUND
EQ)
S602
(DOLBY
PRO
LOGIC
OFF/
ON)
S601
(DISPLA
Y
MODE)
R642
2.2K
R641
1.8K
R640
1.5K
R639
1.2K
R638
1K
R637
820
S603
(SUPER
SURROUND)
S61
1
() S610 () S609 () S608 () S612
(SUPER
3D
AI
EQ)
S613
(SEA
T
POSITION)
S607
(MUL
TI
REAR
SURROUND)
9 10 11 12 13 14 15
ANF
A
OUT
CNF
C
OUT
DIF
OUT
IREF
VREF
Vcc2
Vcc
A B C
ENB
GND1
GND2
PH
OUT
8 7 6 5 4 3 2 1
16
g
N
M
B
A
P
q
p
r
k
h
i
j
Q
R
m
n
T U C D E F G H I J K L
Z
a
b
f
d
e
R691
220
R692
220
Q605,606
UN5211TX
LED DRIVE
Q605 Q606
R668
2.2K
V
R647
22K
C624
0.01
S
3 2 1
S614
(MULTI JOG)
Y X
(JOY STICK)
R666
47K
R665
47K
R612 1K
W
O
:NEGATIVE VOLTAGE LINE :POSITIVE VOLTAGE LINE
-27V
5.6V
0V
4.7V
2.1V
1.3V
4.4V
1.7V
1.7V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
-22.1V
-22.5V
-22.2V
-22.2V
0V 0V
4.6V 4.8V 2.3V 2.3V
4.7V
0V
4.8V 4.8V
0V 0V 0V
4.8V
0V
4.6V 4.8V 4.8V
0V
2.3V 2.3V 1.5V 1.3V 4.8V
0V
1.7V
4.9V
1.9V
2.1V
3.2V
2.7V
0V
1.2V
-27V
-24.9V
-22.5V
-21.8V
-22V
-22.5V
-22.3V
-22.5V
-
21.9V
-
26.9V
-
26.9V
-
26.7V
-
29.1V
-
29.1V
-
29.1V
-
29.1V
-
28.2V
-
24.4V
-
29.2V
-
29V
-
20.9V
-
17.2V
-
19.6V
-
20.6V
-
20.4V
-
29V
-
29.1V
-
29V
-
28.1V
-
26V
-
26.8V
-
28.8V
-
25.3V
-
28.4V
-
28.8V
-
26.7V
-
22.1V
-
18V
3.4V
P-P
F=4MHz
3.6V
P-P
F=4MHz
0V
4.8V
T 12ms.
0V
4.8V
T 290 s.
0V
4.8V
T 12ms.
0V
4.8V
T 16ms.
1.2V
4.4V
T 16ms.
0V
4.8V
T 16ms.
-30V
4V
T 16ms.
0V
-30V
4V
0V
T 16ms.
5.6V
5V
5V 2.3V 2.3V 1.5V 5V 0V
2.5V 2.5V 2.5V 2.5V 2.5V 1.5V 2.4V
4.6V
4.9V
1.9V 0V
4.9V
0V
0.5V
0V
0.5V
1.2V
0.4V
2.7V