- 27 -
- 26 -
PRODUCT SAFETY NOTICE
Each precaution in this manual should be followed during servicing. Components identified with the IEC symbol
!!!
and
mark in the
parts list and the schematic diagram designated components in which safety and performance can be of special significance. When
replacing a component identified by
!!!
and
, use only the replacement parts designated, or parts with the same ratings of resistance,
wattage or voltage that are designated in the parts list in this manual. Leakage-current or resistance measurements must be made to
determine that exposed parts are acceptably insulated from the supply circuit before returning the product to the customer.
SCHEMATIC DIAGRAM (AMPLIFIER)
This is a basic schematic diagram.
(R)REC SW
PACK SW
NC
(F)REC SW
PLUNGER
INITIALIZE SW
MOTOR
PH1
GND
REEL
(R)REC_SW
(F)REC_SW
PACK_SW
INI_SW
POWER_CON
MOTOR
PLUNGER
STAND_BY
RECORDING
MAIN_MUTE
+5.6V
+9.4V
-28V
-RESET
V_CHECK
REC_MUTE
BEAT
D_CLK
D_OUT
VF_CE
TU_CE
TU_DI
RDS
FL2
GND
FL1
NC
REEL
CD_L
AGND
CD_R
GND
+9.4V
C4820
C4821
C4822
C4823
C4833
C4720
C4721
C4722
C4723
C4733
C4825
C4725
C4726
C4826
C4727
C4728
C4827
C4828
R4732
R4832
CN457
CN456
C4832
C4732
R4840
R4740
C4840
C4740
C4500
IC442
C4842
C4742
C4841
C4741
R4841
R4501
R4741
R4500
D4500
R4504
R4502
C4505
C4502
C4503
C4743
C4843
R4743
R4843
R4720
R4726
R4826
R4820
R4827
R4828
R4829
R4831
R4821
R4822
R4823
R4727
R4728
R4729
R4721
R4722
R4723
R4725
R4731
R4825
C4950
C4603
C4601
L4601
L4600
C4600
C4606
R4607
C4608
C4607
R4605
Q4602
C4605
Q4603
R4604
C4604
R4602
C4609
R4606
R4608
L4603
L4604
L4602
C4602
R4603
R4601
R4600
Q4601
IC443
R4962
CN450
R4751
R4851
R4750
R4850
C4751
C4851
C4750
C4850
C4501
IC440
C4707
R4800
C4700
R4702
C4701
R4700
C4801
C4800
R4802
R4801
R4701
C4702
C4550
C4704
C4551
R4550
C4802
C4556
C4804
C4554
R4551
C4807
C4806
R4552
C4703
R4703
R4803
C4803
C4708
R4805
C4555
R4553
C4552
C4553
C4805
C4705
C4808
C4706
R4705
IC446
D4993
C4993
C4994
R4403
R4402
R4401
R4400
PR495
C4992
C4991
C4990
D4991
Q4990
Q4991
D4992
R4992
C4995
C4996
R4993
PR496
Q4994
Q4960
Q4961
Q4963
Q4962
R4966
R4965
D4960
S4901
R4963
Q4992
C4953
CN455
R4781
R4881
C4997
Q4993
C4984
R4990
Q4600
CN445
Q4501
Q4800
Q4700
R4967
CN440
R4991
R4994
D4994
C4560
R4560
Q4502
R4503
D4998
IC441
R4921
C4921
R4922
R4923
C4922
C4923
PR436
D4348
R4347
R4348
CN441
C4341
C4342
R4341
C4344
D4341
D4342
C4343
D4345
D4344 D4343
R4340
R4342
C4345
D4320
R4321
D4321
C4320
R4322
R4323
Q4320
Q4321
R4320
R4324
CN400
Q4345
R4345
R4346
R4406
D4406
R4745
R4845
Q4410
Q4346
C4504
CN480
AUX_L
AUX_R
R4995
R4704
R4804
L4881
L4781
L4581
R4911
L4191
CN412
CN411
CN416
CN415
C4280
C
4281
D4280
D4281
D4283
D4282
C4282
C4283
D4284
PR420
C4284
CN420
1/50
1/50
1/50
1/50
1/50
1/50
1/50
1/50
1/50
1/50
1/50
1/50
2700P
2700P
0.1
0.1
0.1
0.1
6.8K
6.8K
10/50
10/50
3.9K
3.9K
2200P
2200P
470/35
TDA7265
1000/25
1000/25
100P
100P
18K
1K
18K
1K
1SS133
10K
18K
2.2/50
47/50
0.047
0.1
0.1
2.2
2.2
1K
100K
100K
1K
27K
220K
39K
68K
82K
4.7K
39K
27K
220K
39K
82K
4.7K
39K
220K
68K
220K
2200/50
10/50
0.1
470UH
470UH
1/50
4700P
33
0.027
2200P
1K
KTC3198
0.039
KTC3198
39K
0.1
100
47/16
22K
68K
470UH
BEAD
BEAD
10/50
56K
1K
22K
KRC107M
BA7755A
100
39K
39K
22K
22K
100P
100P
100P
100P
220/16
AN7348K
1/50
100
0.033
120K
100/16
100
100/16
0.033
120K
33
33
1/50
0.068
1/50
22/16
10M
1/50
10/50
1/50
22/16
22K
1/50
3300P
22K
1500P
15K
15K
1500P
1500P
10K
47/16
22K
220/16
0.047
100P
100P
1500P
3300P
10K
NJM78M05A
1SS133
470/25
47/10
330
15K
10K
10K
800mA
470/16
220/16
0.022
MTZJ13B
KTD2058
KTD2058
MTZJ10B
820
0.022
220/16
820
1250mA
KRC107M
MPSA56
MPSA56
KRC107M
KRC107M
470
470
1SS133
100
KTA1271
470/10
390
390
0.01
KTA1271
2200/25
470
MPSC56
KRA107M
KRC107
KRC107
4.7K
470
4.7K
RL153
10/50
4.7K
KRC107
15K
1SS133
LC75342
1K
100P
1K
1K
100P
100P
750
MTZJ5.1
100
100
220/35
47/50
2.2K
47/50
1SS133
1SS133
47/63
MTZJ30B
1SS133 1SS133
10
1K
47/50
MTZJ3.9B
10K
1SS133
10;50
100K
4.7K
KTA1266
KTA1266
2.2K
1K
KRC107M
4.7K
47K
390
MTZJ5.1B
390
390
MPSA56
MPSA56
22/16
100K
4.7K
4.7K
22UH
22UH
22UH
5.6
0.01
0.01
BD82N
BD82N
BD82N
BD82N
0.01
0.01
RL153
2500mA
0.01
11
10
9
8
7
6
5
4
3
2
1
5
4
3
2
1
24
23
22
21
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
1
2
3
4
5
6
7
8
9
10
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
17
18
19
20
21
22
23
24
25
26
27
28
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1
2
3
4
5
V_CHK
D_CLK
TU_DO
VF_CE
TU_CE
TU_DI
MUTE
BEAT
REC
+9.4V
CD_R
TU_R
AUX_R
VF_CE
TU_DO
D_CLK
+9.4V
+5.6V
TU_R
TU_L
TU_DO
TU_CE
TU_DI
D_CLK
AUX_L
AUX_R
CD_L
TU_L
AUX_L
REC
MUTE
+5.6V
+5.6V
BEAT
+9.4V
+9.4V
+9.4V
+12V
+12V
CD_L
CD_R
+9.4V
-28V
-28V
+5.6V
V_CHK
+9.4V
RDS
RDS
+5.6V
R-IN
L-IN
MUT/ST-BY
R-OUT
L-OUT
R-NF
0V
26.0V
0V
0V
0V
0V
15.3V
0V
0V
0V
-VS
-VS
+VS
R-CH
L-CH
R-CH
L-CH
R/P
HEAD
HEAD
E
SP481
SP471
WOOFER
WOOFER
RIGHT
LEFT
+5.6V
A_GND
TU-R
TU-L
+8.5V
TU-DO
TU-CE
TU-DI
TU-CLK
GND
NC
NC
R
PBNF
R
PBEQ
R
PBOUT
ALC
LOWCUT
R
RECIN
R
RECOUT
ALC
NC
NC
VCC
R
IN
L
IN
L
PBNF
L
PBEQ
L
PBOUT
L
RECIN
L
RECOUT
REC/PB
SW
B PB
RIPPLE
FILTER
GND
PHONE
HEAD
NC
NC
NC
TEST
CL
VDD
DI
CE
VSS
Vref
R
OUT
R
BASS2
R
BASS1
R
TRE
R
VRIN
R
SELO
AU
TU
CD
TA
TA
CD
TU
AU
L
SELO
L
VRIN
L
TRE
L
BASS1
L
BASS2
L
OUT
L-NF
RDS
TO SHIELD PLATE
BW
BL
AC 230V/50Hz
FUSE(TH)
16.0
12.0
12.6
9.4
16.0
10.0
(1/4W FUSE)
6.2
3.9
3.9
4.2
4.5
4.5
FU421
T4A L 250V
7
6
5
4
2
1
PT420
3
