Onkyo A-933 Service Manual
SERVICE MANUAL
STANDBY/ON
SERVICE MANUAL
INTEGRATED AMPLIFIER
MODEL A-933
MD
ON(G)
STANDBY(R)
LINE
CD
TUNER
PHONO
TAPE /CDR
A-933
Ref. No. 3876
032005
STANDBY
ON
4
231
78
56
GROUP
10/0>10
9
FM AM CLEAR
CD
MD
TAPE /CDR
VOLUME
PRESET
MUTING
VOLUME
TIMER
ENTER
MEMORY REPEAT DISPLAY
RANDOM P MODE SCROLL
CLOCK
CALL
-
C
S
613
R
PRESET
SLEEP
INPUT
Silver and Black models
S UPP, S MPP
B UPP, B MPP
230-240V AC, 50Hz
230-240V AC, 50Hz
SAFETY-RELATED COMPONENT
WARNING!!
COMPONENTS IDENTIFIED BY MARK ON THE
SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE
CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.
REPLACE THESE COMPONENTS WITH ONKYO
PARTS WHOSE PART NUMBERS APPEAR AS SHOWN
IN THIS MANUAL.
MAKE LEAKAGE-CURRENT OR RESISTANCE
MEASUREMENTS TO DETERMINE THAT EXPOSED
PARTS ARE ACCEPTABLY INSULATED FROM THE
SUPPLY CIRCUIT BEFORE RETURNING THE
APPLIANCE TO THE CUSTOMER.
RC-613S
SPECIFICATIONS
A-933
Power output :
Dynamic power :
THD (total harmonic distortion) :
Damping factor :
Input sensitivity and impedance :
Output level and impedance :
Phono overload :
Frequency response :
Tone control :
SN ratio :
Speaker impedance :
Power supply :
Power consumption :
Stand-by power consumption :
Dimensions (W x H x D) :
Weight :
80 W + 80 W (8 , 1 kHz, DIN)
270 W + 270 W (3 , Front)
220 W + 220 W (4 , Front)
110 W + 110 W (8 , Front)
0.08% (1 kHz, 1 W)
25 (Front, 1 kHz, 8 )
200 mV, 50 k (LINE)
2.5 mV, 50 k (PHONO MM)
200 mV, 2.2 k (REC OUT)
130 mV (MM, 1 kHz, 0.5%)
10 Hz - 60 kHz, +1 dB -3 dB (CD)
+8 dB, -8 dB, 100 Hz (BASS)
+8 dB, -8 dB, 20 kHz (TREBLE)
+10 dB, 80 Hz (SUPER BASS)
100 dB (LINE, IHF-A)
70 dB (PHONO, IHF-A)
4 - 16
AC 230 - 240 V, 50 Hz
100 W
0.9 W
275 x 103 x 328 mm
7.5 kg
Analog inputs :
Analog outputs :
Subwoofer pre outputs :
Speaker outputs :
Phones :
Specifications and features are subject to change without notice.
PHONO, TUNER, CD, LINE, MD, TAPE/CDR, MAIN IN
MD, TAPE/CDR
1
2 (A, B)
1
SERVICE PROCEDURE
1. Replacing the fuses
This symbol located near the fuse indicates that the
fuse used is show operating type, For continued protection against
fire hazard, replace with same type fuse , For fuse rating, refer to
the marking adjest to the symbol.
Ce symbole indique que le fusible utilise est e lent.
Pour une protection permanente, n'utiliser que des fusibles de meme
type. Ce demier est indique la qu le present symbol est apposre.
A-933
REF.NO.
F901
F902
NAME
FUSE
FUSE
DESCRIPTION
3.15A-SE-EAWK
2A-SE-EAK
Q'TY
1
1
PART NO.
252076GR
252074GR
REMARKS
2. Initialize the unit.
(1) Press and hold down the
All indicators light up ---> Standby
(2) Disconnect the AC power cord from a wall outlet.
MAIN IN button, then press the STANDBY/ON button.
3. Setting position before shipment.
(1) POWER
(2) BASS : CENTER
(3) TREBLE : CENTER
(4) SUPER BASS : MIN.
(5) VOLUME : MIN.
switch : ON
4. EuP Lot6 correspondence, Add "D" to the end of serial numbers.
Change T903, P TRANS, NPT-1938P, 2301539 2301539A.
old part (2301539)
new part(2301539A)
old set
new set(EuP Lot6 correspondence, Add "D" to the end of serial numbers.)
A-933
EXPLODED VIEW
P901
P901A
A102
P201A
x 2 pcs.
A039
A040
A038
x 17 pcs.
F901C
A101
A002
A043
U10
U09
F901
A755
x 8 pcs.
A037
L=25mm
x 2
A002
x 2 pcs.
A002
x 2 pcs.
A037
L=30mm
A021
U01
A037
L=30mm
E401
x 6 pcs.
A027
A033
x 2 pcs.
A024
x 6 pcs.
P312
T902
A045
x 2 pcs.
A002
x 2 pcs.
A044
U02
A002
x 4 pcs.
A032
x 8 pcs.
A002
A047
A037
L=15mm
x 3
T901
A029
U11
A002
x 2 pcs.
E402
A002
x 2 pcs.
A024
x 4 pcs.
A025
x 2 pcs.
A002
P701
U08
U14
A007
A005
x 2 pcs.
A037
L=10mm x 8
A022
x 4 pcs.
A037
L=20mm
U06
A001
A002
x 7 pcs.
U13
A082
x 9 pcs.
A003
x 2 pcs.
A002
x 3 pcs.
A073
x 3 pcs.
A057
A068
A062
A081
A053
A056
A069
x 2 pcs.
A054
A055
A064
A024
x 5 pcs.
A084
U04
A002
x 2 pcs.
A057
A067
x 4 pcs.
A055
A051
A061
A083
x 2 pcs.
A096
A037
L=30mm x 2
A068
A066
A072
A075
x 2 pcs.
A063
A065
A071
A-933
A-933
A
BCDEFGH
SCHEMATIC DIAGRAMS-1
PRE-AMPLIFIER SECTION / POWER SUPPLY SECTION
L201
NCH-1358
1
2
3
TAPE/CDR
4
SUBWOOFER
5
RI
PHONO
TUNER
LINE
MAIN IN
OUT
OUT
MD
PREOUT
CD
P206
P207
P208
P209
C282
102
C283
102
L
R
P201
R215
330
L
R216
330
R
R219
P202
330
L
R220
R
330
R223
330
L
R224
330
R
L
R
L
R
L
IN
R
L
R
L
IN
R
P204
P205
P203
R247
2.2K
R243
2.2K
R244
2.2K
R227
2.2K
R228
2.2K
R231
R232
R235
2.2K
R236
2.2K
R239
R240
330
330
330
330
C273
C274
C229
C231
C230
C215
101J
C216
101J
C217
101J
C219
101J
C220
101J
C221
C222
C224
101J
C227
C228
C275
102J
R202
C218
101J
C225
C226
1K
101J
R201
1K
102J
102J
C223
101J
R245
220K
R246
220K
C201
C202
R217
220K
R218
220K
R221
220K
R222
220K
R225
220K
R226
R229
220K
R241
220K
220K
R230
R248
C281
220K
R233
220K
R234
220K
R237
220K
R238
220K
R242
220K
220K
470J
470J
102
C203
22/25
820
R207
220K
R205
C205
C206
56K
R203
56K
R204
C204
22/25
R206
220K
R208
820
NJM4580M-D
1
2
3
4
5
6
7
-8.4V
R270
C207
C208
Q205
VSS
47K
152J
220/6.3
220/6.3
152J
NJM4580M-D
5
Q201
6
C209
682J
R209
470K
R210
470K
C210
682J
2
Q201
3
NJM4580M-D
7
Q203
4056BF
RN1404
Q212
C213
7
10/50
C211
182J
R211
39K
R212
39K
C212
182J
4
1
10/50
8
-15V
C252
220/16
VEE
1
L1
2
L2
3
L3
4
L4
5
L-COM1
6
L5
7
L6
8
L-COM2
9
L7
10
L8
11
L-COM3
12
NC
13
ST DATA
ST
14
VSS
15 16
NJM4580M-D
C233
R254
1K
47/50
R268
1K
Q209
2SD655
5
6
+8.4V
VCC
14
13
12
11
10
9
8
R269
47K
C214
Q204
R-COM1
R-COM2
1
100K
R213
100K
R214
+15V
C251
220/16
VDD
30
R1
29
R2
28
R3
27
R4
26
NJU7313AM
25
R5
24
R6
23
22
R7
21
R8
20
COM3
19
NC
18
DATA
17
CK
8
Q203
4
R253
10K
D201, D202
UDZS8.2B
R275
CLK
3
2
R252
(1/2W)
470
220/16
10K
D201
C255
Q211
RN2403
C232
47/50
R251
D202
Q210
RN1407
220K
C256
220/16
C234
47/50
C235
47/50
R276
(1/2W)
470
R249
R250
R257
R258
47K
47K
220K
220K
U02
PRE-AMPLIFIER PC BOARD
R301
3.3K
Q303
2SD655-F
Q304
2SD655-F
R302
3.3K
R272
(1/2W)
R271
22 (1/2W)
22
R283
100K
(1/2W)
R273
22
C253
220/16
C254
8
3
Q202
2
4
R261
1K
NJM4580M-D
R262 1K
6
Q202
5
220/16
1
7
R255
1K
R256
1K
R320
R267
220K
R274
100K
C236
47/50
C237
47/50
R315
1K
R316
1K
(1/2W)
22
R259
R260
220K
220K
C301
47/25
220K
R303
220K
R304
47/25
C302
NJM4580M-D
R319
220K
+15V
+15V
+12V
+5V
R263
1K
R264
1K
220K
R305
220K
R306
C261
C262
78L05SMT
10/16
J222
J223
3
2
5.6K
R309
5.6K
R310
6
5
78M15
220/16
220/16
O
Q214 79M15
Q216
O
G
C267
C239
474K
474K
C269
R265
1K
Q207
2SD655
Q208
2SD655
R266
1K
NAAF-8499 & NAAF-8500
NJM4580M-D
C305
R311
1
Q301
47/25
10K
R307
C303 NC
C304
NC
10K
R308
4
C306
Q301
7
47/25
8
C321
220/16
(1/2W)
R321
22
Q213
R277
(1/2W)
2.2
IO
G
R278
G
I
(1/2W)
2.2
Q215
78M12
O
I
To NADG-8505
G
C266
220/16
(SD-2 : H3)
RN2402
Q206
Q217
RN2402
I
C322
220/16
C238
C268
R322
C265
224K
224K
C259
C260
2.2
47
220K
220K
R312
47
(1/2W)
22
D223
D224
1000/35
1000/35
R280
(1/2W)
104Z
R313
R314
2SD655-F
+20.2V
C264
C243
102
Q305
R317
1K
R318
1K
Q306
2SD655-F
D221
D222
SINB60-4062
1000/25
C242 102
C241102
D225
R281
0.47
334J
C257
334J
C258
R282
0.47
R286
R287 220
R285
(1/2W)
(1/2W)
R279
2.2
(1/2W)
220
FUNC CLK
FUNC DATA
220
FUNC STB
PROTECT V
RPOTECT I
PROTECT V
PROTECT I
C263
PWMCNT
NF MUTE
NF MUTE
PWMCNT
+15V
GND
-15V
334J
MAIN IN
HPMUT
SPB RL
SPA RL
SPA RL
SPB RL
JL501A
HPFL
GND
HPFR
GND
HPIN
AMUT
GND
HPIN
GND
+12V
GND
JL302B
P301B
R
L
R
L
P212A
P213A
P701B
RI
+5V
L
R
P401A
BROWN
BLACK
BROWN
BLUE
BLUE
To NADG-8505
(SD-2 : H4)
To NAAF-8496
(SD-3 : A5)
To NAAF-8496
(SD-3 : A3)
To NADG-8505
(SD-2 : H4)
P702A
P301A
R
GND
L
R
L
+15V
GND
-15V
223
C375
C351
47/25
C352
47/25
TONE/DIRECT
R351
470
6.8K
R355
6.8K
R356
R352
470
To NAAF-8496
(SD-3 : H4)
(SD-3 : H4)
To NAAF-8496
(SD-3 : H4)
To NAAF-8496
VA
VA
C353
R353
VOLUME
R357
R353
50KB
R353
50KB
R358
470
470
47/25
C354
47/25
R360
R359
220K
220K
C387
C388
R362
33/35
10K
10K
33/35
NJM4580M-D
!
NPT-1521P
P503
RED
RED
P213
BLUE
BLUE
BROWN
BLACK
BROWN
P212
RED
RED
P504
BLUE
BLUE
P505
T901
!
NPT-1522P
T902
P906B
P907B
To NADG-8505
(SD-2 : A2)
CAUTION
FOR CONTINUED PROTECTION
AGAINST FIRE HAZARD, REPLACE
ONLY WITH FUSE OF SAME TYPE
AND RATING INDICATED.
ATTENTION
AFIN D'ASSURER UNE PROTECTION
PERMANENTE CONTRE LES RISQUES
D'INCENDIE, REMPLACER UNIQUEMENT
PAR UN FUSIBLE DE MEME TYPE
ET CALIBRATION COMME INDIQUE.
U04
NJM4580M-D
5
7
Q351
6
R365
47K
Q353
2SK365-GR
R361
R363
R364
12K
12K
R383
1M
D351
C355
33/50
C356
33/50
2SK365-GR
Q354
47K
R366
4
2
Q351
1
3
8
Q355
RN1407
P906A
Q903
RN1404
R909
27K
C908
10/16
P907A
+4.7V
JL901B
POWER
GND
+9V
POFF
+5V
THIS SYMBOL LOCATED NEAR THE FUSE INDICATES
THAT THE FUSE USED IS SLOW OPERATING TYPE
FOR CONTINUED PROTECTION AGAINST FIRE
HAZARD,REPLACE WITH SAME TYPE FUSE. FOR FUSE
RATING REFER TO THE MARKING ADJACENT TO THE SYMBOL.
CE SYMBOLE INDIQUE QUE LE FUSIBLE UTLISE EST
E LENT.POUR UNE PROTECTION PERMANENTE,N'UTILISER
QUE DES FUSIBLES DE MEME TYPE. CE DARNIER EST
INDIQUE LA QU LE PRESENT SYMBOL EST APPOSE.
C358
47K
R384
Q356
RN2403
!
224
C912
R910
C357
47/25
10K
47/25
C922
!
L901
RN1404
104
Q901
Q904
SUPER
BASS
R369
20KA
R369
20KA
!
2SC1740S-R
10K
R908
VOLUME PC BOARD
C363
104
C365
474J
822
C359
R373
680
C361
393J
R375
C362
R374
393J
680
822
C366
C360
474J
C364 104
C378
C377
220/16
220/16
(1/2W)
R385
22
C904
!
103M
224
C903
D905
1SS355
C909
103Z
2SC1740S-R
Q902
Q921
S-80127CN
VDD
OUT
D921
NC
VSS2
VSS
UDZJ5.1B
NAETC-8501 & NAETC-8502
100K
100K
NJM4580M-D
R376
5
R386
NJM4580M-D
3
Q352
2
4
6
Q352
8
(1/2W)
22
U09
BASS
4.7K
R377
R370
1
100KC
1K
R379
1K
R380
R370
100KC
7
4.7K
R378
C367
473J
C369
224J
C370
224J
R391
10K
R392
10K
C368
473J
TREBLE
822J
C371
R381
R371
50KC
470
393J
C373
393J
C374
R382
R371
50KC
470
822J
C372
NAPS-8506
POWER SUPPLY PC BOARD
R901-R903
TERMISTOR M3R014C
!
R907
0.22(1/2W)
SINB60-4101
C907
1000/16
R922
18K
104
C921
R921
33K
D901
R923
27K
D906
1SS355
C910
103Z
E901
R904R903R902R901
C906
C911
RL902RL901
2.2/50
!
C905
104Z
334J
D902
45
1
NPT-1398P
9
R905
0.47(1/2W)
1SS355
!
F901
T3.15AL250V
!
T903
R906
0.47(1/2W)
D903
1SS355
NOTE
THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL).
ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
ELECTROLYTIC CAPACITORS ( ) ARE IN uF/WV.
ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.
EX) 030- 3pF 330- 33pF 331- 330pF 333- 0.033uF
ALL RESISTORS ARE IN OHMS 1/4WATTS UNLESS OTHERWISE NOTED.
THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS.
EX) PRINTING SIDE
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.
<Note>
NC = No mount of parts.
SD-Z : XY
Location of connected terminal in schematic diagrams.
SD-Z = Schematic diagrams-Z. X = A to H, Y = 1 to 5.
U06
HEADPHONE JACK PC BOARD
L381
L382
L383
P905B
P902BP902A
P903BP903A
R388
!
P901
POWER
!
!
R387
47
47
S901
C902
103M
C381
102J
C383
102K
AC IN
230-240V 50Hz
P904BP904C
P904A
T2.5AL250V
!
C901
472M
JL302A
HPFL
HPGND
HPFR
GND
HPIN
P905A
P901A
U10
OUTLET PC BOARD
!
NAETC-8503
P381
C382
102J
C385
104Z
P382
NASW-8508
U11
POWER SWITCH
PC BOARD
!
F902
AC OUTLET
!
P911
NAPS-8507
PHONES
A-933
A
SCHEMATIC DIAGRAMS-2
MICROPROCESSOR SECTION
NADG-8505
1
To NAPS-8506
(SD-1 : F4)
2
3
NOTE
THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL).
4
ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
ELECTROLYTIC CAPACITORS ( ) ARE IN uF/WV.
ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.
EX) 030- 3pF 330- 33pF 331- 330pF 333- 0.033uF
ALL RESISTORS ARE IN OHMS 1/4WATTS UNLESS OTHERWISE NOTED.
THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS.
EX) PRINTING SIDE
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.
<Note>
NC = No mount of parts.
SD-Z : XY
Location of connected terminal in schematic diagrams.
SD-Z = Schematic diagrams-Z. X = A to H, Y = 1 to 5.
!
5
U08
MICROPROCESSOR PC BOARD
JL901A
ACPOWER
GND
+9V
POFF
BCDEFGH
D712
R760
Q712
RN2402
SPEAKERS B
330
JL702B
D716
D713
R761
RN2402
SPR39
2SC2712-GR
Q713
SPEAKERS A
330
Q714
R763
(RED)
TONE
TONE
S705
DIRECT
R769
10K
330
R764
180
R762
(RED)
STANDBY
Q715
RN2402
330
DIRECT
R766
390
2SC2712-GR
Q717
10K
180
R770
R767
ON
(GRN)
D714
SPR39
U13
SWITCH PC BOARD
330
R765
D715
MAIN IN
(GRN)
Q716
RN1402
S706
MAIN IN
P705
TONE/DIRECT
VOLUP
VOLDN
P702
FUNC CLK
FUNC DATA
FUNC STB
MAIN IN
PROTECT V
PWMCNT
PROTECT I
AMUT
GND
HPMUT
HPIN
NF MUTE
RI
SPB RL
SPA RL
P701A
NAETC-8510
To NAAF-8499 &
NAAF-8500
(SD-1 : C4)
To NAETC-8501 &
NAETC-8502
(SD-1 : E1)
To NAAF-8499 &
NAAF-8500
(SD-1 : D4)
+4.7V
R702
2.2(1/2W)
C701
NC
MPC29M05AHF
I O
104Z
C702
D721
Q731
+5.6V
G
1SS352
C719
FLASH WRITER
INPUT SELECTOR
1K
R727
680
R728
560
R729
470
R730
R731
C703
100/6.3
NC
P720
1.2K
R726
S701
330
L701
NCH-1471
C704
10/16
D718
HS
VPP
VDD
RESET
SCK
SI
SO
GND
100/6.3
R725
R732
S702
1.8K
270
D701
D702
C718
330/6.3
3.3K
R724
R723
R722
R721
470
6.8K
18K
S703
R701
C705
100
R720
390
0.1F
S704
C706
+4.9V
R714
10K
R715
NC
R768
3.3K
330/6.3
ST
R709
R710
47
R711
47
R712
47
R713
47
C708 104Z
R716
33K
2.7K
R717
C713
104Z
2.7K
R718
C709
104Z
R719
C710
C711
1/50
220
2.7K
104Z
D703
17
21
1SS352
Q702
RN1404
SO18
SI19
SCK20
NU
NU22
HS23
VDD124
AVSS25
NU26
NU27
NU28
MODE29
SELECTOR30
K231
K132
FUNC CLK
FUNC DATA
220
R703
R706 1K
R705 1K
R704 220
14
NU13
NU
FUNC CLK16
FUNC DATA15
17 FUNC STB
MPD780022AGC-8BS
AVDD35
AVREF34
K033
RESET36
C712 104Z
RESET
PROTECT I
PROTECT V
R7071KR708 1K
PROTECT I11
PROTECT V12
XT138
XT237
4.7K
R734
47K
R733
+4.9V
C707
VDD010
Q701
IC39
+5V
104Z
VSS0 9
OSC240
STANDBY LED 8
OSC141
SP-A LED 7
VSS142
8MHZ
X701
C714 104Z
SP-B LED 6
TONE LED 5
DIRECT LED 4
MAIN IN LED 3
TUNER LED 64
REMIN43
K044
POFF45
SYSIN46
47K
POFF
PHONO
PHONO LED 1
POWER LED 2
CD LED 63
LINE LED 62
MD LED 61
TAPE LED 60
TONE/DIRECT 59
VOLDN 58
VOLUP 57
MAIN IN 56
PWM CNT 55
ACPOWER 54
AMUT 53
HPMUT 52
NF MUTE 51
SPB RL 50
SPA RL 49
SYSOUT47
HP IN48
220
R737
R736
RN2403
Q703
10K
R738
R740 22
+4.9V
C715
100/6.3
Q705
RN1402
64
D704
C716
104Z
330
R754
D706
R753
R752
R751
R750
R749
R748
R747
R746
R745
R744
R743
1K
1K
R741
D705
UDZS5.1B
1SS352
GP1UM281XKVF
PHONO
Q706
RN1402
TUNER
1K
R742
R739
U701
CD
220
1K
1K
1K
1K
220
220
1K
1K
1K
220K
R755
D707
LINE
PWMCNT
NFMUTE
330
TUNER
TAPE
MD
VOLDN
VOLUP
MAIN IN
AMUT
HPMUT
SPBRL
SPARL
HPIN
RI
Q707
RN1402
R756
D708
VOLDN
VOLUP
330
CD
Q708
RN1402
R757
D709
330
LINE
Q709
RN1402
R758
D710
330
MAIN IN LED
DIRECT LED
IN21NC4
R759
MD
D711
Q710
RN1402
TONE LED
MOTOR DRIVER
Q704 TA7291S
GND5
OUT23
VCC2
330
TAPE/CDR
+5V
GND
K1
OUT17
VS6
C717
JL702A
VREF8
100/6.3
Q711
RN2402
IN19
+4.9V
STANDBY/ON
SPEAKERS A
SPEAKERS B
A-933
A
SCHEMATIC DIAGRAMS-3
POWER AMPLIFIER SECTION
1
2
To NAAF-8479 &
NAETC-8480
(SD-1 : D5)
3
4
5
To NAAF-8499 &
NAAF-8500
(SD-1 : D4)
P401
Lch
GND
Rch
GND
PROTECT I
PROTECT V
PWMCNT
NF MUTE
+12V
+5V
GND
SPB RL
SPA RL
JL501B
R401
2.2K
R402
2.2K
C402
C401
221
Lch
221
R403
Rch
R404
C403
47/25
(ROS)
220K
C404
47/25
(ROS)
220K
Q615
TLP283-4
C612 103
C613 103
D401
C410
Q401
HN3C51F
R405
27K
R437
UDZ5.6B
HN3C51F
56K
R406
27K
R438
22/16
56K
Q402
D402
R413
C409
R414 390K
R672
R409
C431
6
390K
R407
R429
22/16
R435
R410
C432
5
470
R408
R430
R436
UDZ5.6B
12
11
10K
R631
10
9
10K
R633
3
Q616
RN1402
1
2
2.2K
R634
RN1402
22K
Q671
TLP521-1
681
1
2
47
681
3
4
47
Q617
4.7K
100K
4.7K
100
R635
R673
390
R427
470
100
R428
100K
2.2K
R483
R493
1.2K
(B)
R431
R484
R494
1.2K
(B)
R432
5
6
7
8
R632
14
134
16
15
Q674
2SA950
1K
R411
4.7K
3
5
4
470
R423
DC OFFSET
ADJUST
47
Q403
2SC2712-GR
2.2K
R433
1K
4.7K
R412
1
6
2
470
R424
DC OFFSET
ADJUST
47
Q404
2SC2712-GR
2.2K
R434
R630
2.2K
R644
NC
2.2K
2.2K
R671
1
4
3
2
BCDEFGH
<Note>
NC = No mount of parts.
SD-Z : XY
Location of connected terminal in schematic diagrams.
SD-Z = Schematic diagrams-Z. X = A to H, Y = 1 to 5.
NRL-2P5A-DC12V
RL501
L505
C547
103/100V
C548
+14.3V
-14.3V
470/35
NCH-1537
4
C595
102
C558
NC
4
103/100V
L506
NCH-1537
C517
C518
-33.5
3
12
C557
NC
C559
NC
C596
3
12
12000/63
12000/63
C524
C546
102
C550
C511
C512
334
102/100V
102/100V
100/16
100/16
D519
S1NB60
2
1
D511
1SS352
C551
C589
RL502
NRL-2P5A-DC12V
D512
NC
C552
C590
Q531
2SA1837
Q533
C505
2SC2712-GR
C506
Q534
2SS1162-GR
Q532
2SC4793
D517
LN15XB60
C520
334/100V
C522
334/100V
4
3
NC
103
NC
103
10/50
10/50
1
2
D518
LN15XB60
1
2
C614
4.7/50
NAAF-8496
P501
P506
R557
470
(1W)
1.5K
R562
33K
R560
D514
UDZS15B
C509
47/63
D515
C510
47/63
UDZS15B
33K
R561
R563
1.5K
R558
(1W)
470
3
4
C519
334/100V
3
4
C521
334/100V
1SS352
D601
D602
1SS352
C523
R559
2.2
!
334
L
SPEAKERS
R
L
SPEAKERS
R
P503
P504
P505
RED
RED
RED
RED
BLUE
BLUE
A
B
To TRANS.T901
(SD-1 : E4)
To TRANS.T902
(SD-1 : E4)
To TRANS.T902
(SD-1 : E4)
C407
47/25
R421
47K
47/25
R422
47K
Q618
RN1402
C408
(ROS)
(ROS)
R419
R420
Q621
RN2404
Q419
RN1441
2.2K
13.8V
Q622
RN2404
Q420
RN1441
2.2K
C412
13.8V
C411
104
+12.6V
104
Q619
RN1402
220K
+12.6V
R641
R642
220K
R653
220
R576
560K
100/16
NC
33K R651
R575
560K
100/16
C435
R495
R652
R654
C436
R496
R415
220
R577
47K
100/16
NC
33K
R578
47K
100/16
47K
C437
C438
R498
220
220
101
C611
R416
47K
R497
R636
5.6K
R441
47K
R443
C585
Q411
5.6K
R442
47K
R444
HN3A51F
C586
Q614
RN1407
47K
Q405
HN3A51F
Q407
HN3A51F
6
R417
10K
101
2SC2713-GR
2.2K
R491
Q406
HN3A51F
2
1
Q408
5
R418
10K
101
Q412
2SC2713-GR
R492
0
R643
R453
R485
R454
R486
2.2K
2
1
2.2K
NC
R489
2.2K
NC
R628
12K
2
1
102
4
3
R490
12K
33K
R629
C418
102(F)
2
6
C417
6
5
6
R451
R455
(F)
1
R482
33
R456
2
11
5.6K
R481
120F
4
5
3
390
Q409
HN3C51F-BL
1
2
Q417
560
HN3A51F
2
6
5
1
D403
1SS352
1312
Q413
74AC14FT
2
4
5
3
390
R450
Q410
HN3C51F
3
4
Q418
560
HN3A51F
6
5
1
R584
C584
D404
1SS352
1
Q413
74AC14FT
10
13
Q613
M51957BFP
NC3 8
NC11
VCC
2
IN
3
OUT 6
NC2
R439
D405
11
101
D406
R449
3
R440
3
C5GND4
22
390
3
4
4
3
1SS352
120F
R452
1
2
4
3
1SS352
7
R459
R583
C419
102
390
R460
C420
102(F)
12
5
C583
6
560
3.9K
560
101
(F)
10
4
4
Q407
HN3A51F
4
5
3
2.2K
R457
NC
R487
3.9K
C405
9
14
56
7
Q408
HN3A51F
2
6
1
2.2K
R458
NC
R488
221
R586
C406
5
14
9
7
10K
R627
1/50
C610
R581 3.9K (2W)
C581
221
101
2.2K
R585
D411
1SS352
8
D407
1SS352
D413
1SS352
R467
D409
1SS352
R582 3.9K(2W)
C582
101
2.2K
D412
1SS352
6
D408
1SS352
D414
1SS352
8
D410
1SS352
-47.9V
104
C615
R469
390
R465
0
R471
100
560
R470
390
R466
0
R472
100
R468
560
Q673
DTC114ES
101
C423
C424
Q672
DTA114ES
101
C421
C422
101
101
Q415
74AC00FT
13
12
9
10
14
1
2
7
4
5
Q416
74AC00FT
1
2
5
4
14
12
13
7
10
9
11
8
3
6
R579
3
6
11
8
R580
33
33
R564
220
R565
220
Q536
78M09
I O
G
C571
47/35
Q530
78L05
I
C507
33/35
-47.9V
224
C427
-52.8V
Q525
78M09
I
G
C572
47/35
Q529
78L05
I
G
C508
33/35
-47.9V
224
C428
-52.8V
THERMAL
PROTECTION
-52.8V
G
O
-52.8V
O
O
C553
C554
R623
P602
224
224
C535
100/16
C429
100/6.3
D521
1SS357
R501
NC
C561
R595
271
D523
1SS357
R503
NC
C563
C536
C430
100/6.3
D522
1SS357
R502
NC
C562
271
D524
1SS357
R504
NC
C564
101
R621
THERMISTOR
R622
47
101
100/16
R596
47
NC
470
M1FL20U
M1FL20U
C592
R598
C608
R620
D501
271
C591
47
R597
D525
1SS352
D502
271
R538
47
D526
1SS352
224
15K
R537
R619
33
R571
C537
330/16
56K
56K
R543
Q501
2SC2713
D527
33
R572
C538
330/16
56K
56K
R544
Q502
2SC2713
D528
1SS352
Q610
2SA1162-GR
47K
D603
C541
R507
1SS352
C542
R508
1SS352
224
Q503
2SC2712
82
224
Q504
2SC2712
82
1SS352
D604
560
R513
Q515
TPC6901
560
R515
R509
560
R514
560
R516
R510
Q513
TPC6901
1
3
TPC6901
Q517
1
TPC6901
Q519
3
82
Q514
TPC6901
TPC6901
Q516
1
Q520
TPC6901
3
82
5.6K
R617
Q608
HN3A51F
Q609
RN1402
+52.8V
33
R517
2
3
6
4
5
IRFB23N15D
3.3
R533
R525
4.7
3.3
R527
D507
NC
2
6
4
1
5
33
R519
-44V
33
R521
2
3
6
4
5
IRFB23N15D
3.3
R535
R529
10
3.3
R531
D509
NC
2
4
6
1
5
33
R523
33
R518
2
3
6
4
1
5
IRFB23N15D
3.3
R534
R526
4.7
3.3
R528
D508
2
R520
R524
33
R522
33
NC
4
6
1
5
-44V
33
2
Q518
3
TPC6901
6
4
5
IRFB23N15D
3.3
R536
R530
10
3.3
R532
D510
2
NC
4
6
1
5
3
Q521
Q523
Q522
1
+4.2V
1
-47.8V
1
+4.2V
Q524
1
-47.8V
R540
R539
R541
(2W)
0.1
R542
(2W)
22K
103
R603
2.2
471
M1FL20U
NC
6.8
M1FL20U
22K
R604
M1FL20U
C556
R550
M1FL20U
R591
C565
22K
R574
471
R546
(1%)
100K
R592
C566
R610
Q601
2SA1163-BL
R573
C555
(1%)
R545
100K
R549
100K
471
R609
+52.8V
2SA1163-BL
2.2
(1%)
100K
334
C532
6.8
(2.2)
471
22K
(1%)
C601
334
C531
C603
C602
Q602
C604
103
103
103
R605
100K
Q603
2SC2712-GR
100K
R606
Q604
2SC2712-GR
L502
22U
L501
22U
C540
C539
334
334/100V
BUSBAR
E901
C544
R552
R551
C543
22
153
U01
POWER AMPLIFIER PC BOARD
22
153
BUSBAR
BUSBAR
BUSBAR
D551
UDZS5.6B
R645
NC
C606
C605
+52.8V
68K
R637
104
R638
6.8K
104
10K
R639
100K
R640
-52.8V
C525
0.1
R601
47K
2
D503
3
C573
2
D505
3
R607
33K
(2W)
0.1
R602
47K
2
D504
3
NC
C574
2
D506
3
R608
33K
(2W)
0.1
NOTE
THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL).
D552
-47.9V
UDZS5.6B
5.6K
R613
Q605
HN3A51F
R646
4
2
6
5
1
R612
100K
R656
NC
3
Q607
RN1402
R611
47K
RN2402
Q606
Q526
78L05
O
C527
47/16
I
G
R616
6.8K
R614
82K
82K
R615
CURRENT &
PUMPING PROTECT
C607
2
4
5
3
1
R618
100K
R655
NC
100/35
6
DC PROTECT
ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
ELECTROLYTIC CAPACITORS ( ) ARE IN uF/WV.
ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.
EX) 030- 3pF 330- 33pF 331- 330pF 333- 0.033uF
ALL RESISTORS ARE IN OHMS 1/4WATTS UNLESS OTHERWISE NOTED.
THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS.
EX) PRINTING SIDE
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.
A-933
R53
R539
2
RL
2
R
R
RL501
Q
Q
Q
Q
Q
Q5
5
9
C5
C5
D
7
C
7
1
17
C
C
8
5
C5
8
P
3
50
03
P5
P
4
0
P
0
04
D504
50
P501PP506
C557
C558
C5CC537
C
A
PRINTED CIRCUIT BOARD VIEWS-1
U01
1
2
POWER AMPLIFIER PC BOARD (NAAF-8496)
Side-A
50
BCD
3
5
50
50
51
51
1
5
4
51
5
A-933
639
0
609
R
Q605
C605
C
R
2
R6
R62
R61
R
60
R
6
Q536
552R646
A
PRINTED CIRCUIT BOARD VIEWS-2
U01
1
2
POWER AMPLIFIER PC BOARD (NAAF-8496)
Side-B
D
BCD
3
61
60
4
R64
R
D
R
5
A-933
31
C206
002
2
C0
C207
R207
C208
5
249
1
3A
15
80
3
Q
S
L
S
L
T
M
N
ST
CLK
Q201
JL302B
JL302B
2
25138500
538500
NCAF-8500
NCAF 8500
A
PRINTED CIRCUIT BOARD VIEWS-3
U02
1
2
PRE-AMPLIFIER PC BOARD (NAAF-8499 & NAAF-8500)
<Note>
NAAF-8499 + NAAF-8500 = 1set
Side-A
BCDEFGH
NAAF-8499
1
Jumper wire
NAAF-8500
2
R32
3
A
21
2
PAR
PBR
2
DCPR
P705A
2
27
AINI
4
5
A-933
04
01
D
5
D
5
Q216
C238
C
C265
C
R3
5
3
R
R
R3
R
C268
20
R
2
283
R28
A
PRINTED CIRCUIT BOARD VIEWS-4
U02
1
2
PRE-AMPLIFIER PC BOARD (NAAF-8499 & NAAF-8500)
<Note>
NAAF-8499 + NAAF-8500 = 1set
Side-B
BCDEFGH
Jumper wire
NAAF-8499NAAF-8500
1
3
22
22
3
2
4
5
A-933
C375
C381
38
L381
C383
C385
353
JJJ
J
R351
R
P7
R
5
NCETC-8501
E
25138501
3
301
S
A
S
B
A
PRINTED CIRCUIT BOARD VIEWS-5
1
2
U04
NAAF-8501NAAF-8502
VOLUME PC BOARD (NAETC-8501 & NAETC-8502)
<Note>
NAETC-8501 + NAETC-8502 = 1set
Side-A Side-B
P
BCD
R
NAAF-8501NAAF-8502
3
3
Jumper wire
U06
HEADPHONE JACK PC BOARD
Jumper wire
(NAETC-8503)
4
ide-
381
ide-
5
A-933
A
PRINTED CIRCUIT BOARD VIEWS-6
U08
1
2
3
MICROPROCESSOR PC BOARD (NADG-8505)
Component side Soldering side
J704
7
J706
P701A
C711
15
JL901A
R702
J703
12
X701
C706
J705
J728
J709
J710
2
S702
C701
15
J701
C719
Q731
VOUT
VCC
GND
U701
J734
C703
7
C704
U701
C705
J707
J708
7
22
30
7
C717
J716
J717
12
22
17
J719
12
J720
J721
15
P705
J722
7
J711
17
17
J718
J725
C715
C718
J736
7
D714
J702
J723
2
20
J733
D713 D712
J713
P720
J712
7
J715
BCD
R721
D721
C707
R705
R706
Q713
D718
R718
R762
C709
R719
R717
R716
R714
R715
C708
Q717
C710
C713
R770
R768
R769
R767
R712
R711
R710
R709
R708
R707
R703
R704
R713
Q711 Q712
R761
R720
R760
J714
C702
C714
C712
D705
R739
R771
R772
R753
D704
R738
R743
R737
R744
R740
R736
Q703
R745
J737
S703 S704
22
12
7
D703
Q702
D701
D702
R701
R742
R741
R746
R733
R734
L701
R747
R748
R749
R752
R751
R750
Q701
1
C716
Q701
J726
D707
7
9
12
J727
D706
S701
NCDG-8505
25138505B
GND
+5V
MAININ
SW
TONE_LED
DRT_LED
2
Q710
R758
Q709
R757
R759
R725
Q708
R724
R726
Q707
R756
R727
Q706
R723
R755
R728
Q705
R754
R722
R732
R731
R730
R729
1
4
7
J729
D710
J730
J731
Q704
D708
S701
D711D709
5
P702
VOLUP
DRCT
VOLDN
7
J732
JL702A
A-933
A
PRINTED CIRCUIT BOARD VIEWS-7
U09
1
2
POWER SUPPLY PC BOARD (NAPS-8506)
Componemt side
7
JL901B
Q904
C907
C907
J901
J902
C911
J904
C908
Q902
R905
R907
R906
C905
C910
C909
E901
RL902
RL901
T903
T903
BCD
RL902
RL901
C904
C904
R901
P904D
P905A
F901
R902
L901
F901B
R903
6.3A/125V
J905
R904
7
C903
L901
P906A
F901A
C901
AC-G AC-H
C901
AC-GAC-H
C912
P902A
AC-G
P907A
P901A
P903A
AC-H
AC-G
AC-H
AC-GAC-H
AC-H
AC-G
2
NCPS-8506
25138506
2
E911 E912
Soldering side
R910
Q903
R921
C906
D901
D901
R922
R909
R908
Q921
D902
Q901
D903
3
C922
D921
R923
C921
D906
D905
4
U10
OUTLET PC BOARD (NAPS-8507)
Componemt side
25138507
NCPS-8507
2
LN
P911
P905B
5
AC-G AC-H
2
P902B
P904A
T2AL250V
F902
J912
J911
P903B
15
15
F902AF902B
P911
P912
P912
A-933
A
PRINTED CIRCUIT BOARD VIEWS-8
U11
POWER SWITCH PC BOARD (NASW-8508)
1
2
Component side
C902
WHT
1
C902
P904B
NCSW-8508
25138508
S901
S901
P904C
BRN
BCD
2
U13
SWITCH PC BOARD (NAETC-8510)
Component side
3
NCETC-8510
25138510
0
D715
J741
JL702B
D716
S705S706
22
2
Soldering side
Q715
R765
R763
R764
Q714Q716
R766
4
5
IC BLOCK DIAGRAMS AND TERMINAL DESCRIPTIONS
Q204 : NJU7313AM (Analog Function Switch)
BLOCK DIAGRAM
A-933
L1
L2
L3
L4
L-COM1
L5
L6
L-COM2
L7
L8
L-COM3
ST
VDD
VEE
Level Shifter
Latch Circuit
Control Circuit
Latch Circuit
Level Shifter
R1
R2
R3
R4
R-COM1
R5
R6
R-COM2
R7
R8
R-COM3
DATA
CK
VSS
TERMINAL DESCRIPTION
Pin No. Pin Name Description
1
2
3
4
5
6
7
8
9
10
11
12
14
15
VEE
L1
L2
L3
L4
L-COM1
L5
L6
L-COM2
L7
L8
L-COM3
ST
VSS
Negative Voltage Supply
Analog switch input/output
Analog switch input/output
Analog switch input/output
Analog switch input/output
L1, L2, L3, L4 Common
Analog switch input/output
Analog switch input/output
L5, L6 common
Analog switch input/output
Analog switch input/output
L7, L8 Common
Chip enable
GND
Pin No. Pin Name Description
16
17
19
20
21
22
23
24
25
26
27
28
29
30
CK
DATA
R-COM3
R8
R7
R-COM2
R6
R5
R-COM1
R4
R3
R2
R1
VDD
Clock input
Data input
R7, R8 Common
Analog switch input/output
Analog switch input/output
R5, R6 Common
Analog switch input/output
Analog switch input/output
R1, R2, R3, R4 Common
Analog switch input/output
Analog switch input/output
Analog switch input/output
Analog switch input/output
Positive voltage supply
MICROPROCESSOR TERMINAL DESCRIPTIONS-1
Q701 : MPD780022AGC-166-8BS
A-933
Pin No.
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
Pin name
PHONO LED
POWER LED
MAIN IN LED
DIRECT LED
TONE LED
SP-B LED
SP-A LED
STANDBY LED
VSS0
VDD0
PROTECT I
PROTECT V
NU
NU
FUNC DATA
FUNC CLK
FUNC STB
SO
SI
SCK
NU
NU
HS
VDD1
AVSS
NU
NU
NU
MODE
SELECTOR
K2
K1
K0
AVREF
AVDD
RESET
XT2
XT1
IC
OSC2
I/O
O
O
O
O
O
O
O
O
---
---
---
--O
O
O
O
O
O
---
--O
---
---
---
---
---
---
---
---
---
---
O
Act.
I
I
I
A/D
A/D
I
A/D
I
A/D
I
A/D
I
I
CLK
Description
PHONO LED control output.
L
POWER LED (green) control output.
L
MIAN IN LED control output.
H
DIRECT LED (green) control output.
H
TONE LED (red) control output.
H
SPEAKERS-B LED control output.
H
SPEAKERS-A LED control output.
H
STANDBY LED (red) control output.
H
Ground.
--Power supply. (+5V)
--Over current & thermal detection input.
H
DC voltage detection input.
H
Not used.
--Not used.
--Serial data output to function switch.
L
Serial clock output to function switch.
L
Strobe output to function switch.
L
For writing of flash microprocessor.
L
For writing of flash microprocessor.
L
For writing of flash microprocessor.
L
Not used.
--Not used.
--For writing of flash microprocessor.
L
Power supply. (+5V)
--Power supply for A/D converter. (+5V)
--Not used. (Connect to ground)
--Not used. (Connect to ground)
--Not used. (Connect to ground)
--Initial setting. (Model setting)
For writing of flash microprocessor.
Key input.
Key input.
Key input.
Power supply for A/D converter. (+5V)
--Power supply. (+5V)
--Reset signal input.
L
Not used.
--Not used.
--For writing of flash microprocessor.
L
Crystal oscillation circuit input. (8MHz)
MICROPROCESSOR TERMINAL DESCRIPTIONS-2
Q701 : MPD780022AGC-166-8BS
A-933
Pin No.
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
Pin name
X1
VSS1
REMIN
K0(STANDBY/ON)
POFF
SYSIN
SYSOUT
HP IN
SPA RL
SPB RL
NF MUTE
HPMUT
AMUT
ACPOWER
PWM CNT
MAIN IN
VOLUP
VOLDN
TONE/DIRECT
TAPE LED
MD LED
LINE LED
CD LED
TUNER LED
I/O
---
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
Act..
I
CLK
I
I
A/D
I
I
I
Description
Crystal oscillation circuit input. (8MHz)
Ground.
--Signal input from remote sensor.
H
K0 (STANDBY/ON) key input.
Power failure detection input.
L
System control (RI) signal input.
L
System control (RI) signal output.
L
Phones detection signal input.
H
SPEAKERS-A relay control output.
H
SPEAKERS-B relay control output.
H
Muting control output of Power amplifier section.
H
Muting control output of headphone amplifier section.
H
Muting control output of pre-amplifier section.
H
Main power relay control output.
H
PWM control output of Power amplifier section.
H
MAIN IN input selector control output.
H
Motor volume control output.
H
Motor volume control output.
H
TONE / DIRECT selector control output.
H
TAPE LED control output.
H
MD LED control output.
H
LINE LED control output.
H
CD LED control output.
H
TUNER LED control output.
H
ADJUSTMENT PROCEDURE
4
R
4
2
DC OFFSET ADJUSTMENT
[When]
1. Exchange the parts on the POWER AMPLIFIER PC board (NAAF-8496).
2. Exchange the POWER AMPLIFIER PC board ass'y (NAAF-8496)
[Procedure]
<Notes>
No load and No signal
1. Connect to DC voltmeter to the SPEAKER terminals.
2. Connect the power cord to the wall outlet.
3. Press the POWER switch to unit is power on.
4. Adjust the trimming resistor R427 (Lch) and R428 (Rch) so that the reading of DC voltmeter becomes DC 0 +/-10 mV.
Refer to <Fig-1> .
5. Wait for 2 minutes.
6. Adjust the trimming resistor R427 (Lch) and R428 (Rch) so that the reading of DC voltmeter becomes DC 0 +/-10 mV.
Spec. : 0 +/- 10 mV
7. Press the POWER switch to unit is power off.
8. Disconnect the DC voltmeter.
9. Disconnect the power cord from the wall outlet.
A-933
<Fig-1>
POWER AMPLIFIER PC board
(NAAF-8496)
436
C436
498
2
R422
9
C407
R421
R651
R496
C408
R402
C401C402
R401
R495
R497
R404 R403
R484
R406
R405
C435
R483
R435
R428
C403C404
R427
C
R428
Rch
C432 C431
R494 R493
R427
Lch
R437
D
Front side
PACKING PROCEDURE
A752
A-933
A955
A093
A091
A093
A093
A095
A095
A952
A953
A954
A956
A957
A958
A959
A751
R
Right side
marking
Front side
marking
Left side
marking
Front side
marking
A801
A096
Front side
L
A092
(L & R)
A094
A701
A-933(S)
A-933(S)
A-933(S)
A701
A094
Front side
A-933
<Note>
Parts marked by "NSP" are generally unavailable because
they are not in our Master Spare Parts List.
NOTE : THE COMPONENTS IDENTIFIED BY THE MARK
! ARE CRITICAL FOR RISK OF FIRE AND
ELECTRIC SHOCK. REPLACE ONLY WITH PART
NUMBER SPECIFIED.
<Notes>
(S) : Silver model
(B) : Black model
[U] : Made in Japan
[M] : Made in Malaysia
EXPLODED VIEW PARTS LIST
REF. NO. PART NAME DESCRIPTION Q'TY PART NO REMARKS
EV
A001 F BRACKET (AS) 1 27111401 (S)
EV
A001 F BRACKET (AS) 1 27111437 (B)
EV
A002 SCREW 3TTB+8B(CU)SR 29 801618
EV
A003 SPACER t0.5 x 8 x 3.2 2 27270438
EV
A005 SCREW 3P+10FN(3BC) 2 82143010GR
EV
A007 KNOB (POW) 1 28326285 (S)
EV
A007 KNOB (POW) (B) 1 28326454 (B)
EV
A021 CHASSIS --- 1 --- NSP
EV
A022 LEG AS 4 27175408A (S)
EV
A022 LEG AS (B) 4 27175429 (B)
EV
A024 SCREW 3TTB+8B(3BC) 15 838430088GR
EV
A025 RETAINER (PC) 2 27141964
EV
A027 SHLD PLT (POW) 1 27150499
EV
A029 BRACKET (T) 1 27130978
EV
A032 SCREW 4TTC+8C(3BC) 8 830440089GR
EV
A033 HOLDER KGLS-6S 2 27190011
EV
A037 TAPE TAPE(CLOTH-16U) (1) 29110083
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