DSP-A5
P. C. B. OPERATION (2)P. C. B. OPERATION (3)
P. C. B. OPERATION (1)
H
E-42/J-40
BACDEFG
1
2
3
4
5
6
■ PRINTED CIRCUIT BOARD (Foil side)
E-43/J-41
PRV2
CELC
DTB
VDN
/CSD
CEAC1
SCK
SCKD
MG
SOD
CLKAC
RXAC
CEAC2
ERRA
/ST
DO
RCE
RCK
F-RX
FCE
MG
CNVSS
F-TX
F-CK
+5BU
/RES
CETC
CKB
VUP
CECOD
FMT
SDT
SID
+5M
MG
INTD
TXAC
DBL
/ICD
METER
TCE
DEST/RDO
RDT
#501
#501
#501
TO: INPUT (1)
ERY
PRV1
VP
PRD
PRI
SRY
SI2
PRY
MG
LIMDT
#503
W553
TO: MAIN (1)
W551
GY
W552
GY
FROM:
POWER
TRANSFORMER
3
FLASH
µ-COM
WRITE
CONNECTOR
4
INPUT SELECTOR
INPUT
MODE
EFFECT
TAPE/MD MON
/EXT. DECODER
NEXT SET MENU
PROGRAM
STANDBY / ON
–+
17 18 22 25 30
1
13
30
50
51
80
81
100
M30217MA-A203FP
31
35 43 46 50 55 6160 64 65
G
VC
VO
COM
NJM78L05A
OUT
IN
40
12
COM
B
A
R,T,A,L
only
R,T only
J only
J only
W551
W552
+12
–12
TIR
E
TIL
E
TOR
E
TOL
TO:
INPUT (1)
#581
W581
BASS TREBLE BALANCE
14
8
NJM2068D-D
5
14
8
NJM2068D-D
5
#303
TO: INPUT (2)
VIDEO AUX
S VIDEO VIDEO L AUDIO R
E
VE
AUX-C
1
3
2
4
AXR
AXL
AUX-Y
AUX-V
#303
#303
● Semiconductor Location
Ref. No.
D501
D502
D503
D504
D505
D506
D507
D508
D509
D510
D511
D512
IC501
IC502
IC581
IC582
Q501
Q502
Q503
Q504
Q505
Q506
Location
E2
G2
G2
E2
F3
E2
E2
G2
G2
G3
G3
G2
E2
G2
E5
F5
D2
D2
G2
G3
F2
F2
2V
SAMPLE 20us
0V
Point
3
(Pin 13 of IC501)
V : 2V/div H : 20µsec/div
DC range 1 : 1 probe
5V 2V
SAMPLE 5s
0V
(CH1)
0V
(CH2)
CH2
CH1
Disconnect the
power cord from
the AC outlet.
With the POWER
switch turned ON,
connect the
power cord to the
AC outlet.
This waveform is not available by pushing the
power switch ON and OFF.
Point
4
CH1 : Emitter of Q504
CH2 : Collector of Q503
V : 5V or 2V/div H : 5sec/div
DC range 1 : 1 probe
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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