NAD C 326BEE User manual

NAD
SERVICE MANUAL
C 326BEE
C 326BEE
Stereo Integrated Amplifier
Stereo Integrated Amplifier
DRAFT DATE: June 2011

2
SAFETY INFORMATION
1.5A

3
SERVICE SAFETY PRECAUTIONS
1. Replacing the fuses
CAUTION:
FOR CONTINUED PROTECTION AGAINST THE RISK OF FIRE REPLACE ONLY WITH SAME TYPE OF
FUSE.
Reference Designator Database Part Number Description
F601*AH 20-001-0086-90 FUSE 3.15A 250V TIME LAG LBC
5x20mm TSD UL/CSA/VDE/SEMKO
F601*C,CT 20-001-0076-90 FUSE 1.6A 250V TIME LAG
LBC 5X20mm TSD UL/CSA/VDE/
SEMKO (RoHS)
NOTE:
<*AH > : USA, CANADIAN MODEL ONLY.
<*C, *CT > : EUROPEAN MODEL ONLY.
2. Safety check out
(Only U.S.A. model)
Before returning the product to the customer, make leakage current or resistance measurements to determine
that exposed parts are acceptably insulated from supply circuit.
Parts marked with the symbol are critical with regard to the risk of fire and electric shock.
CONTENTS
DESCRIPTION PAGE
SPECIFICATIONS..............................................................................................................................4 - 5
REAR PANEL / FRONT PANEL VIEW ...................................................................................................6
DISASSEMBLY INSTRUCTIONS ...........................................................................................................7
WIRING DIAGRAM ......................................................................................................... ..................8 - 9
BLOCK DIAGRAM.................................................................................................................................10
ADJUSTMENT POINTS DIAGRAM / AMPLIFIER ADJUSTMENT.......................................................11
PCB LAYOUT.................................................................................................................................12 - 15
SCHEMATIC DIAGRAM.................................................................................................................16 - 19
ELECTRICAL PARTS LIST............................................................................................................20 - 31
IC BLOCK DIAGRAM.....................................................................................................................32 - 34
EXPLODED VIEW..........................................................................................................................35 - 36
EXPLODED VIEW PARTS LIST ....................................................................................................37 - 38
PACKING DIAGRAM.............................................................................................................................39

4
SPECIFICATIONS
PRE AMPLIFIER SECTION
LINE LEVEL INPUT, PRE-OUT
THD (2 Vin 2 Vout, CCIF IMD, DIM 100) >0.004 % (ref. 20 Hz – 20 kHz)
Signal/Noise ratio IHF >100 dB (A-weighted, ref. 500 mV)
>108 dB (A-weighted, ref. 2V, Volume max.)
>92 dB (A-weighted, ref. 100 mV in 100 mV out - unity
gain)
Channel separation - 1 kHz >80 dB
10 kHz >70 dB
Input impedance (R and C) 100 kΩ+ 320 pF
Maximum input signal >8 Vrms (ref. 0.1 THD)
Output impedance - Pre out 75 Ω
Tape out Source Z + 1 kΩ
Input sensitivity 159 mV (ref. 500 mV out)
Frequency response ± 0.1 dB (ref. 20 Hz - 20 kHz, Tone defeat ON)
±0.5 dB (ref. 20 Hz - 20 kHz, Tone defeat OFF)
Maximum voltage output - IHF load >10 V (ref. 0.03% THD)
600 ohms load >10 V (ref. 0.03% THD)
TONE CONTROLS
Treble ± 5 dB at 10 kHz
Bass ± 8 dB at 100 Hz
POWER AMPLIFIER SECTION
MAIN IN, SPEAKER OUT
Continuous output power into 8 Ω and 4 Ω (Stereo) >50 W (ref. rated THD, 20 Hz-20 kHz, both channels
driven)
Rated THD (CCIF IMD, DIM 100) <0.009 % (ref. 20 Hz - 20 kHz)
Clipping power >65 W (ref. 1 kHz 1% THD)
IHF dynamic power - 8 Ω 100 W
4 Ω 150 W
2 Ω 200 W
Peak output current >20 A (ref. 1 Ω, 1 ms)
Signal/Noise ratio >100 dB (A-weighted, ref. 1 W)
>117 dB (A-weighted, ref. 150 W)
Damping factor >100 (ref. 8 Ω, 50 Hz and 1 kHz)
Frequency response ± 0.1 dB (ref. 20 Hz - 20 kHz)
3 Hz – 70 kHz (ref. -3 dB)
Input impedance 20 kΩ + 1 nF
Input sensitivity 630 mV (ref. rated power)
Voltage gain 29 dB
Headphone output impedance 68 Ω
Channel separation - 1 kHz >80 dB
10 kHz >70 dB
TRIGGER OUT
Output resistance <100 Ω
Output current 50 mA
Output voltage +12 V
OVERALL SPECIFICATIONS
CD IN, SPEAKER OUT
THD (250 mW to rated power, CCIF IMD, DIM 100) <0.009 % (ref. 20 Hz - 20 kHz)
Signal/Noise ratio >94 dB (A-weighted, ref. 1 W)
>110 dB (A-weighted, ref. 50 W, volume set for 2V

5
Frequency response ± 0.2 dB (ref. 20 Hz - 20 kHz, Tone Defeat ON)
10 Hz – 65 kHz (ref. -3 dB)
Channel separation - 1 kHz >80 dB
10 kHz >70 dB
POWER CONSUMPTION
Rated power 290 W (ref. 230V AC 50 Hz; 120V AC 60 Hz)
Standby power <1 W
Idle power <35W
PHYSICAL SPECIFICATIONS
Dimensions (Width x Height x Depth) 435 x 100 x 286 mm (Net)
435 x 116 x 332 mm (Gross*)
* - Gross dimensions include feet, volume knob and extended speaker terminals.
Net Weight 7.1 Kg (15.62 lbs)
Shipping Weight 9.1 Kg (20.02 lbs)

6
FRONT PANEL
REAR PANEL / FRONT PANEL VIEW
REAR PANEL
1. MP INPUT
2. CD INPUT
3. TUNER INPUT
4. DISC INPUT
5. AUX INPUT
6. VIDEO INPUT
1. STANDBY
2. STANDBY LED
3. SOFT CLIPPING
INDICATOR
4. REMOTE SENSOR
5. PHONES
6. MP SOCKET
7. INPUT SELECTOR
8. TONE DEFEAT
9. TONE CONTROLS
10. BALANCE
11. VOLUME
7. TAPE IN/OUT
8. SUB 1, SUB 2
9. PRE OUT
10. MAIN IN
11. SOFT CLIPPING
12. +12V TRIGGER OUT
13. IR IN/OUT
14. SPEAKERS
15. POWER SWITCH
16. AC MAINS INPUT
1
111095 6 7 8
2 3 4
1 432 5 6 7 8 9 10 12 1615141311

7
DISASSEMBLY INSTRUCTIONS
1. Remove machine screws M4.0 x 8.0 (x4pcs) from the side panels.
Remove tapping screw 3.0 x 8.0 (x 3pcs) from the back panel.
Refer to Figure No. 1.
2. Pull both sides of the TOP COVER slightly outwards and tilt approx. 35 ° and then
remove in the direction as indicated. Refer to Figure No. 2.
Figure No. 1
Figure No. 2

8
WIRING DIAGRAM
Check these cables for damage caused by chassis lip.
90SC326PREDVR-9021000 90SC326PREDVR-9021000

9
WIRING DIAGRAM PARTS LIST
Item Database Part Number Description Remark
1 17-012-4444-90 CABLE ASSY 3 WAYS AWG18 3.96P PIN 2 VOID PSU BD-J605,
UL1672 L=170mm (B/BR) (RoHS) J606
2 17-012-4422-90 CABLE ASSY 9 WAYS AWG=26 2.5P UL1007 PSU BD-J601A
L=240mm (RoHS)
3 17-012-2956-90 Cable assy 1 way AWG18 UL1007 BLACK L=100mm PHONE BD-J510
W/RING TERMINAL(RoHS)
4 17-012-4536-90 CABLE ASSY 2 WAYS AWG26 2.5P UL2468 L=700 PHONE BD-
(RoHS) J508A
5 17-012-4424-90 CABLE ASSY 7 WAYS AWG=28 2.0P UL1007 L=350mm KEY BD-J506A
(RoHS)
6 17-012-4425-90 CABLE ASSY 6 WAYS AWG=28 2.0P UL1007 L=410mm KEY BD-J507A
(RoHS)
7 17-012-4426-90 CABLE ASSY 10 WAYS AWG=28 2.0P UL1007 KEY BD-J501A
L=420mm (RoHS)
8 17-012-4427-90 CABLE ASSY 2 WAYS AWG=26 2.5P UL1007 L=80mm KEY BD-J504A
(RoHS)
9 17-012-4423-90 CABLE ASSY 15 WAYS AWG=26 2.5P UL1007/1533 VOL BD-J201A
L=80mm (RoHS)
10 17-012-4420-90 CABLE ASSY 2 WAYS AWG=16 3.96P WHI/RED MAIN BD-J13/
UL1015 L=100mm (RoHS) J16, J14/J15
11 17-012-4428-90 CABLE ASSY 5 WAY AWG26 2.5P UL1007 L=250mm MAIN BD-J101A
(RoHS)
12 17-012-4483-90 CABLE ASSY 1 WAY AWG14 UL1015 L=80mm BLACK MAIN BD-J104,
W/ RING TERMINAL (RoHS) J204
13 17-012-4484-90 CABLE ASSY 1 WAY AWG14 UL1015 L=110mm WHITE MAIN BD-J103
W/ RING TERMINAL (RoHS)
14 17-012-4485-90 CABLE ASSY 1 WAY AWG14 UL1015 L=110mm RED MAIN BD-J203
W/ RING TERMINAL (RoHS)
15 17-012-4521-90 CABLE ASSY 3 WAYS AWG16 3.96P BLACK UL1015 MAIN BD-J7A/
L=200/120/220mm (RoHS) P6/J6A
16 17-012-4529-90 CABLE ASSY 2 WAYS AWG26x1C 2.5P UL1533 L=90 MAIN BD-
(RoHS) J306A/B
17 17-012-4530-90 CABLE ASSY 2 WAYS AWG26x1C 2.5P UL1533 L=110 MAIN BD-
(RoHS) J106A/B
18 17-012-4531-90 CABLE ASSY 2 WAYS AWG26x1C 2.5P UL1533 L=130 MAIN BD-
(RoHS) J105A/B
19 17-012-4532-90 CABLE ASSY 2 WAYS AWG26x1C 2.5P UL1533 L=180 MAIN BD-
(RoHS) J305A/B

10
BLOCK DIAGRAM

11
ADJUSTMENT POINT DIAGRAM
A. Idle Current adjustment
1. Turn on the unit without any input for 15 minutes
2. For left channel, adjust VR103
Voltage across TP1 & TP2 3 – 3.5mV
3. For right channel, adjust VR303
Voltage across TP3 & TP4 3 – 3.5mV
4. With the unit keep turning on, wait for another 15 minutes
5. Re-adjust VR103
Voltage across TP1 & TP2 3 – 3.5mV
6. Re-adjust VR303
Voltage across TP3 & TP4 3 – 3.5mV
B. ISC adjustment
1. Turn VR304 fully anti-clockwise,
2. Use 500mV, 1kHz sine wave, CD input, 4 ohm loading to both channels
3. Increase the output power of both channels to 8V
4. Slowly rotate VR304 clockwise until the voltage at TP10 is the same as TP11
5. Verify the output at 20kHz 8 ohm loading to both channels are larger than 21V, if not, repeat
step 1-4 again

12
PCB LAYOUT
MAIN BOARD - COPPER SIDE
90SC326PREDVR-9021000
90SC326PREDVR-9021000

13
MAIN BOARD - COMPONENT SIDE
90SC326PREDVR-9021000
90SC326PREDVR-9021000

14
KEY BOARD & PHONE BOARD - COMPONENT SIDE
KEY BOARD & PHONE BOARD - COPPER SIDE
C528

15
PSU BOARD - COMPONENT SIDE
PSU BOARD - COPPER SIDE

16
SCHEMATIC DIAGRAM
MAIN BOARD (1)
ipod-L
ipod-R
DISC
CD
VIDEO
AUX
TUNER
TAPE
TAPE OUT
MP
TONE DEFEAT SW
OFF
ON
ON
OFFTONE DEFEAT SW
IN MODULE
OUT MODULE
TONE CONTROL L/CH
L PRE-OUT
R PRE-OUT
IR IN
IR OUT
TONE CONTROL R/CH
80 degree: 330 ohm max.
90 degree: 470 ohm min.
IN MODULE
OUT MODULE
L
R
R
L
R
L
R
L
R
L
R
L
R
L
R
L
SUBWOOFER OUT
VOLUME BOARD
R101
470
R102
1M
R104
1M
R103
470
R107
470
R108
1M
R106
1M
R105
470
R116
1M
R115
470
R111
470
R112
1M
R114
1M
R113
470
R109
470
R110
1M
R310
1M
R309
470
R313
470
R314
1M
R312
1M
R311
470
R315
470
R316
1M
R305
470
R306
1M
R308
1M
R307
470
R303
470
R304
1M
R302
1M
R301
470
1
2
3
J505B
TO KEYBOARD J505A
R117
470
R118
1M
R318
470
R317
1M
C101
100P
C102
100P
C104
100P
C103
100P
C107
100P
C108
100P
C106
100P
C105
100P
C109
100P
C309
100P
C305
100P
C306
100P
C308
100P
C307
100P
C303
100P
C304
100P
C302
100P
C301
100P
R119
120K
MF
R319
120K
MF
C111
47U
25V
C311
47U
25V
R120
560
1%
R320
560
1%
D101
1N4148
D102
1N4148
D103
1N4148
D104
1N4148
D105
1N4148
D106
1N4148
D107
1N4148
D108
1N4148
C112
47U 25V
C113
0.1U
R121
3K3
MF
R123
750
MF
R122
N.I
R124
390
MF
C114
22N
63V
5%
R126
51K
C115
0.1U
63V
5%
R125
180
MF
R127
N.I
12
3
VR101
30K
C116
0.22U
63V
5%
C117
1U
63V
5%
R128
1K5
MF
R129
390
MF
C118
0.1U
C119
1U
16V
C319
1U
16V
C318
0.1U
R329
390
MF
R328
1K5
MF
C317
1U
63V
5%
C316
0.22U
63V
5%
1
2
3
VR301
30K
R327
N.I
R325
180
MF
C315
0.1U
63V
5%
R326
51K
C314
22N
63V
5%
R324
390
MF
R322
N.I
R323
750
MF
R321
3K3
MF
C313
0.1U
C312
47U 25V
Q103
MMBT5551
E
C
B
Q102
MMBT5401
R170
10K
R171
10K
R169
10K
C138
0.01u
R168
330
5%
R173
4.7K
R172
1K
R174
33
C139
0.1U
R175
47
C121
47U 25V
C120
0.1U
C122
N.I
R130
20K
R131
560 1%
R331
560 1%
R330
20K
C322
N.I
C123
N.I
C323
N.I
R134
68
12
3
VR102
100
R132
1.8
R332
1.8
12
3
VR302
100
C320
0.1U
C321
47U 25V
R133
4.7K C124
N.I.
Q101
MMBF5434
R136
10M
R135
100K
C125
100P
C325
100P
R335
100K
R336
10M
Q301
MMBF5434
C324
N.I.
R333
4.7K
R334
68
E
C
BQ322
3906
Q321
3904
C343
10U
50V
R368
10K
R369
1K
C342
4U7 25V
C341
4U7 25V
R370
1K
R371
1K
Q319
3904
E
C
B
Q320
3906
C340
220P
C339
220P
R372
10K
R373
1K
E
C
B
Q318
MMBT5401
R374
100K
C338
22n
50V
R375
330K
R376
390K
R377
100K
R378
220K
Q311
2SK932
R365
10
Q313
MMBT5087
Q317
MMBT5401
Q314
MMBT5551 R366
10
R367
10
R364
4K7
R361 1K
C334 33P
R356 1K5
C333 220P
C335
0.1U
20%
R355
220
C3370.1U
4
5
6
RT102-B
10KA
BASS POT
1
2
3
RT102-A
10KA
BASS POT
4
5
6
RT101-B10KA
TREBLE POT
1
2
3
RT101-A10KA
TREBLE POT
4
5
6
RT103-B
20KMN
BALANCE POT
1
2
3
RT103-A
20KMN
BALANCE POT
4
6
8
RL101-A
13
11
9
RL101-B
1
16
RL101-C
4
6
8
RL102-A
13
11
9
RL102-B
1
16
RL102-C
4
6
8
RL103-A
13
11
9
RL103-B
1
16
RL103-C
4
6
8
RL104-A
13
11
9
RL104-B
1
16
RL104-C
4
6
8
RL105-A
13
11
9
RL105-B
1
16
RL105-C
4
6
8
RL106-A
13
11
9
RL106-B
1
16
RL106-C
4
6
8
RL107-A
13
11
9
RL107-B
1
16
RL107-C
4
6
8
RL108-A
13
11
9
RL108-B
1
16
RL108-C
Q316
MMBT5551
R358
430 1%
R363
1K
R362
1K
E
C
B
Q315 MMBT5551
Q312
MMBT5087
R359
470
R360
470
C336 1N
C136 1N
R160
470
R159
470
Q112
MMBT5087
E
C
B
Q115
MMBT5551
R1621K
R163
1K
R158
430 1%
Q116
MMBT5551
C137
0.1U
R155
220
C135
0.1U
20%
C133
220P
R156 1K5
C134 33P
R1611K
R164
4K7
R167
10
R166 10
Q114
MMBT5551
Q117
MMBT5401
Q113
MMBT5087
R165
10
Q111
2SK932
3
2
4
RL109-A
12VDC
8
9
7
RL109-B
12VDC
1
10
RL109-C
12VDC
R137
10K
R337
10K
R140
10K
3+
2-1
U101-A
NJM4560
5+
6-7
U101-B
NJM4560
8
4
U101-C
NJM4560
R139
11K
C326
0.068u
C126
0.33u
R339
100 Q302
N.I.
R341
10M
C127
100p
R138
100
R338
100
R340
11K
D109
1N4148
Location 58
90 degree
1
2
3
4
R296-A
VOLUME POT
20KB
5
6
7
8
R296-B
VOLUME POT
20KB
910
R296-C
VOLUME POT
20KB
Q104
2SK932
R152
10
Q106
MMBT5087
Q110
MMBT5401
Q107
MMBT5551
R15310
R154
10
R151
4K7
R148 1K
C129 33P
R143 1K5
C128 220P
C130
0.1U
R142
220
C132
0.1U
Q109
MMBT5551
R145
430 1%
R150
1K
R1491K
E
C
B
Q108
MMBT5551
Q105
MMBT5087
R146
470
R147
470
C131 1N
C331 1N
R347
470
R346
470
Q305
MMBT5087
E
C
B
Q308
MMBT5551
R349
1K
R350
1K
R345
430 1%
Q309
MMBT5551
C3320.1U
R342
220
C330
0.1U
20%
C328
220P
R343 1K5
C329 33P
R348 1K
R351
4K7
R354
10
R353
10
Q307
MMBT5551
Q310
MMBT5401
Q306
MMBT5087
R352
10
Q304
2SK932
R141
11K
21
25 M103-A
1
5
4
M103-B
C195 22p
R298
68
C395 22p
R498
68
C196 22p
R300
68
C396 22p
R500
68
1
2
3
M105-A
4
5
6
M105-B
7
8
9
M105-C
1
2
3
M106-A
4
5
6
M106-B
7
8
9
M106-C
1
2
3
M107-A
4
5
6
M107-B
4
5
6
M109-B
1
2
3
M108
1
2
3
M104
+12V TRIGGER
C398 33p
C198 33p
C399 33p
C199 33p
1
2
3
4
5
6
J507B
TO KEYBOARD J507A
1
2
3
4
5
6
7
J506B
TO KEYBOARD J506A
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
J201B
TO VOLUME BOARD J201A
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15
J201A
TO MAIN BOARD J201B
R709
2.2M
R809
2.2M
R710
2.2M
R810
2.2M
C110
0.1u 63V
C310
0.1u 63V
R176
4.7K
C211 47P
C212
10P
R177
4.7K
C213
470P
Q158
MMBT5551
R714
82K
R713 100K
C215 1u
Q358
MMBT5551
R813100K R814 82K
C415
1u
R715100K
Q159
MMBT5551
R716 82K
C216 1u
R815100K
Q359
MMBT5551
R816 82K
C416 1u
Q101A
N.I.
Q301A
N.I.
Q302A
2SK364
C221 47P
R820
220K
R720
100K
R722
390K
R819
330K
C327
22n
50V
R719
100K
E
C
B
Q161
MMBT5401
R821
10K
Q361
MMBT5551
R721
4K7
1
2
J508B
TO HP BOARD J508A
Q162
MMBT5551
R723
4K7
R823
10K
1
2
3
4
5
6
7
8
9
10
J501B
TO KEYBOARD J501A
R379
AH - 90 deg thermal SW
CE - N.I.
1
2
J106A
1
2
J106B
1
2
J306A
1
2
J306B
D307
1N4148
D306
1N4148
D308
1N4148
+18V
-18V
+12V
RELAY-CONTROL
+12V
MPF
+5V
12V_TRIG
+5V
+18V
-18V
+5V
-46V
+18V
MPF
+18V
-18V
VI
AU
TA
TU
DI
C
MPR
MPR
+12V
+5V
PROTECTION
STANDBY
SOFT_CLIPPING
DI C VI AU TU TA
TONE_DEFEAT
RELAY
+22V
TONE_DEFEAT
ROUT-I
RIN-I
RIN+I
LIN+I
LIN-I
LOUT-I
+18V
-18V
+18V
LOUT-O
LIN-O
LIN+O
RIN+O
RIN-O
ROUT-O
-18V
LOUT-O
LIN-O
LIN+O
RIN+O RIN-O
ROUT-O
-18V
+18V
LOUT-I
LIN-I
LIN+I
RIN+I
RIN-I
ROUT-I
-18V
+18V
R_PRE-OUT
R_PRE-OUT
DGND
DGND
DGND
DGND
DGND
DGND DGND DGND
DGND
MUTE
DGND
+5V
VOL-
VOL+
THRM_SEN
+12V
TONE_DEFEAT J201-4
J201-6
J201-6
J201-8
J201-8
J201-10
J201-10
VOL+
DGND
VOL-
+5V
J201-4
J201-4
+12V
TONE_DEFEAT
J201-6
J201-8
J201-10
VOL+
DGND VOL- +5V
GND
GND
GND GND
GND
GND
GND GND GND
GND
+18V
-46V
DGNDDGND DGND DGND
MUTE
DGNDDGND
IR_OUT
IR_IN
Exploded View -B
Note: SMD parts
Note: SMD parts
Bottom Side PCB
Bottom Side PCB
Bottom Side PCB
Bottom Side PCB

17
MAIN BOARD (2)
OFF
ON
POWER AMP L/CH
MAIN-IN
ISC
Low voltage regulator
POWER AMP R/CH
HS
hs
HS
HS
HS
hs
hs
HS
HS
HS
HS
hs
hs
hs
hs
70 deg: 330 ohm max.
80 deg: 470 ohm min.
L
R
HEADPHONE BOARD
SPEAKER OUT
R-CH OUT
R-CH GND
L-CH GND
L-CH OUT
C145
0.1U
R181
470
Q123
2SA1015
Q124
2SC1815
R180
220K
R182
100
R186
100
C144
10U16V
R187
100
D114
IN4148
Q132
MMBT5551
Q131
KSA1220
D110
18V
R183
33K
R184
1K1
R185
1K1
C146
10U
25V
R385
1K1
R384
1K1
C346
10U
25V
R383
33K
D310
18V
R382
100
Q324
2SA1015
Q323
2SC1815
R386
100
R387
100
C344
10U16V
R380
220K
R381
470
C345
0.1U
R188
22K
R193
560
R192
22K
C151
39P
R205
82
5%
MF
R200
120
R202
330
C153 330P
R198
22K
D115 IN4148
R203
100K
MF
C152
220U
63V
Q141
NZT560
Q140
NZT660
R218
3.3 0.5W
R226
3.3
0.5W
D122
5V1
D123
5V1
R234
10 FS
12
3
VR103
200
R232
511
R233
820
R231
10 FS
C169
560P
R237
56
R239
0.05
5W
R240
0.05
5W
Q147
NZT560
Q145
NJW0302G
E
C
B
Q151
NJW0281G
R243
56
C168
560P
C171
N.I.
L101 0.5uH
R250
10/1W FS
R255
3.3/1W
R254
680K
C172
0.1u 100V
C174
0.22u 63V
C173
0.01u
100V
R256
680K
C170
1000p
63V
C175
0.22u 63V
R257
1K
C176
N.I.
Q156
MMBT5551
Q155
KSC2690
R267
510
Q153
MMBT5551
Q154
KSC2690
R268
12
C181
0.1U
R269
2K2
R270
5K1
C182
0.1U
C184
47U
25V
R271
2K2
MF
D130
18V
R273 680
R274
680
C186
47U
25V
R275
680
C188
22P
Q122
KSC2690
Q121
MMBT5551
R276
4K7
C194
0.1U
D131
1N4148
R288
33 0.5W FS
R289 680
C190
220U 35V
R293
680
R292
680
C192
220U
50V
C193
220U
50V
R295
680
R291
33 0.5W FS
C191
220U 35V
R290 680 R294
680
Q119
KSA1220
Q120
MMBT5401
C189
22P
R277
680
C187
10U
25V
R272
2K
MF
C185
47U
25V
C183
0.1U
D330
1N4148 R475
100K
R473
100K
C376
10U
25V
C377
10U
25V
R466
10K
R474
2K2
R479
180K
12
3
VR304
50K
Q357
MMBT5551
D334
1N4148
R480
10K R481
4.3K
R468
18K
R469
22K
R471
22K
R472
18K
D333
1N4148
D332
1N4148
R492
56K
R470
56K
1
2
3
4
5
J101A
5pin
1
2
3
4
5
J101B
5pin
D335 1N4148
R493
100
2W
R494
100
2W
R483
220 2W
R484
220 2W
1
2
RL301-A
3 4
RL301-B
5 6
RL301-C
R194
1K
Q128
MMBT5087
Q129
MMBT5210
Q127
MMBT5210
Q130
MMBT5087
Q133
MMBT5210
R199
22K
R204
10
R229
2M4
C160
100U
50V
C162
100U
16V
C161
100U
16V
Q148
MMBT5551
R238
22
Q150
KSA1220
Q146
KSC2690
R258 100
L102 N.I.
R260
1
R253
1K8
1%
R477
1K
R467
330K
D331
1N4148
R478
220K
Q134 N.I.
R207
N.I.
D117
N.I.
R208
N.I.
D118
N.I.
D119
N.I.
Q135
N.I.
R209
N.I.
C158
N.I.
U103
N.I. R212
N.I.
R213
N.I.
R214
N.I.
R215
N.I.
R225
820
Q137
MMBT5210
Q136
MMBT5210
R222
330
R223
330
R221
2K2
R220 4.3K
Q138
MMBT5087
C159
100P
Q125
MMBT5087
Q126
MMBT5087
C149
15P
D124 IN4148
D125
IN4148
D126
IN4148
D127
IN4148
D120
1N4148
D121
1N4148
R224
75
R219
2K2
Q139
MMBT5087
C163
10U
16V Q149
NZT660
D111
1N4148
R189
22K
R191
22K
C148
47U
35V
D116
10V
R201 27K
R195
1K
R196
1K8
C155
220U
35V
R197
2K2/2W
R263
1K 5%
R262
1K 5%
C177
10U
25V
C178
10U
25V
R464
1K
R465
1K
R462
1K 5%
R463
1K 5%
R241
15
R242
22K
R235 15
R236
22K
R228
270 0.5W
R216
270 0.5W
C157
220U
63V
Q144
KSC2690
Q142
KSA1220
Q152
MMBT5551
R248 36K D128 1N4148
R247
33K
R261
N.I.
R244
1K
R227
68 0.5W
R217
68 0.5W
C156
47U
25V
C154 N.I.
C147
47U
35V
R190
100
D112
1N4148
D113
1N4148
C150
10U 16V
R211
N.I.
C167
N.I.
C165
200p
C166
N.I.
C164
200p
R251
100
R252
36K
R249 3K6 D1291N4148
R246
470K
R259
68 1%
R459
68 1%
R446
470K
D3291N4148
R449 3K6
R452
36K
R451
100
C364
200p
C366
N.I.
C365
200p C367
N.I.
R411
N.I.
C350
10U 16V
D313
1N4148
D312
1N4148
R390
100
C347
47U
35V
C354 N.I.
C356
47U
25V
R417
68 0.5W
R427
68 0.5W
R444
1K
R447
33K
D328 1N4148
R448 36K
Q352
MMBT5551
Q342
KSA1220
Q344
KSC2690
C357
220U
63V
R416
270 0.5W
R428
270 0.5W
R436
22K
R435
15
R442
22K
R441
15
R397
2K2/2W
C355
220U
35V
R396
1K8
R395
1K
R401 27K
D316
10V
C348
47U
35V
R391
22K
R389
22K
D311
1N4148
Q349
NZT660
C363
10U
16V
Q339
MMBT5087
R419 2K2
R424
75
D321
1N4148
D320
1N4148
D327
IN4148
D326
IN4148
D325
IN4148
D324
IN4148
C349
15P
Q326
MMBT5087
Q325
MMBT5087
C359
100P
Q338
MMBT5087
R420 4.3K
R421
2K2
R423
330
R422
330
Q336
MMBT5210
Q337
MMBT5210
R425
820
R415
N.I.
R414
N.I.
R413
N.I.
R412
N.I.
U303
N.I.
C358
N.I.
R409
N.I.
Q335
N.I.
D319
N.I.
D318
N.I.
R408
N.I.
D317
N.I.
R407
N.I.
Q334 N.I.
R453
1K8
1%
R460
1
L302 N.I.
R458 100
Q346
KSC2690
Q350
KSA1220
R438
22
Q348
MMBT5551
C361
100U
16V
C362
100U
16V
C360
100U
50V
R429
2M4
R404
10
R399
22K
Q333
MMBT5210 Q330
MMBT5087
Q327
MMBT5210
Q329
MMBT5210
Q328
MMBT5087
R394
1K
R457
1K
C375
0.22u 63V
C370
1000p
63V
R456
680K
C373
0.01u
100V
C374
0.22u 63V
C372
0.1u 100V
R454
680K
R455
3.3/1W
R450
10/1W FS
L301 0.5uH
C371
N.I.
C368
560P
R443
56
Q351
NJW0281G
Q345 NJW0302G
Q347
NZT560
R440
0.05
5W
R439
0.05
5W
R437
56
C369
560P
R431
10 FS
R433
820
R432
511
12
3
VR303
200
R434
10 FS
D323
5V1
D322
5V1
R426
3.3
0.5W
R418
3.3 0.5W
Q340
NZT660
Q341
NZT560
C352
220U
63V
R403
100K
MF
D315 IN4148
R398
22K
C353 330P
R402 330
R400
120
R405
82
5%
MF
C351
39P
R392
22K
R393
560
R388
22K
Q331
KSA1220
Q332
MMBT5551
D314
IN4148
R245
8M2
R445
8M2
1
2
3
4
5
7
8
M102
PHONE SOCKET
Q353
DTC123EKA
R485
47k
D304
GS1G
R486
47k C381
0.1u
Q354
MMBT5401
R476
4K7
1
3
5
SW101-A
2
4
6
SW101-B
C180
10U
50V
C179
10U
50V
Q356
MMBT5551
R487
33k
R488
47k
D305
1N4148
Q355
MMBT5551
R489
33k D303
1N4148
R490
3.3k
R491
33k
C380
1u
16V
R482
TO = 80 degree
1
2
3
5
6
U102-A
TL071
7
4
U102-B
TL071
1
2
3
5
6
U302-A
TL071
7
4
U302-B
TL071
1
2
3
5
6
U301-A
TL071
7
4
U301-B
TL071
D382
1N4148
1
2
3
M109-A
TP10
TP11
D133
1N4148
D132
GS1G
IN
GND
OUT
U104
7805
D135
5V1
3W
D134
5V1
3W
C197
100uF
16V
1
2
3
4
5
6
7
8
9
J601B
TO PSU J601A
1
2
J504B
TO KEYBOARD J504A
C501
100p
C502
100p
1
2
3
J505A
TO MAIN J505B
1
4
5
A
C
E
B
D
F
M501
MP JACK
J203
J204
J104
J103
C378
47u/25V
C379
47u/25V
1
2
TP1
2pin
1
2
TP2
2pin
1
2
TP3
2pin
1
2
TP4
2pin
R297
100
R299
100
C200
1n
C201
1n
R497
100
R499
100
C400
1n
C401
1n
C203
220P
C403
220P
D137
N.I.
D138
N.I.
R702
N.I.
D338
N.I.
D337
N.I.
R802
N.I.
C404
150p
C204
150p
C405
100P
C205
100P
C206
22n
R703
22
R803
22
C406
22n
C207
0.1u
63V
C208
0.1u
63V
C407
0.1u
63V
C408
0.1u
63V
C209
0.1u
250V
C409
0.1u
250V
R804 1K
R704 1K
1
2
3
4
5
6
7
8
CZ11A
8pin
1
2
3
4
5
6
7
8
CZ21A
8pin
1
2
3
4
5
6
7
8
CZ11B
8pin
1
2
3
4
5
6
7
8
CZ21B
8pin
C210
N.I.
C410
N.I.
R706
330
R806
330
R711
1K
R712
22K
R811
1K
R812
22K
R178
30K
C214
39P
1
2
3
J102A
1
2
3
J302A
Q160
KSC2690
1
2
3
J102B
1
2
3
J302B
Q360
KSC2690
C217
0.1u
C417
0.1u
C219
4700p
C419
4700p
C220
82n
C420
82n
R495
47k
R717 470
R817 470
L103
3.3uH
L104
3.3uH
L303
3.3uH
L304
3.3uH
C218
100P
C418
100P
R718
22K
R818
22K
C525
0.1u
C526
0.1u
J510
TO CHASSIS
D139
3.3V 1W
D141
1N4007
R206
100/1W FS
R406
100/1W FS
D341
1N4007
D339
3.3V 1W
D140
3.3V 1W
D142
1N4007
R210
100/1W FS
R410
100/1W FS
D342
1N4007
D340
3.3V 1W
1
2
J508A
TO MAIN J508B
C421
N.I.
1
2
J105A
1
2
J105B
1
2
J305A
1
2
J305B
C222
470P
D136
1N4007
R266
100
3W
+46V
+37V
+12V
12V_TRIG
+18V
STANDBY
-18V -37V
+12V
SOFT_CLIPPING
+37V
+12V
V-OUT-L
+18V
-18V
+18V
-18V -18V
+18V
-46V
VFB-L-CH
VFB-R-CH
V-OUT-R
VI-R
-46V
+46V
RELAY
STANDBY
+5V
+22V
-18V
+46V
+46V
+5V
PROTECTION
MAIN-IN-R
MAIN-IN-R
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
+5V
+37V +5VX
+5VX
MP-L
MP-R
MP-L
MP-R
MP_DET
+46V
+46V
CZ11-1
CZ11-2
VFB-L-CH
CZ11-5
CZ11-6
CZ11-7
CZ11-8
CZ11-2
CZ11-1
VFB-L-CH
CZ11-6
CZ11-7
CZ11-8
CZ11-5
CZ21-8
CZ21-7
CZ21-6
CZ21-5
VFB-R-CH
CZ21-2
CZ21-1
CZ21-1
CZ21-2
CZ21-5
CZ21-6
CZ21-7
CZ21-8
CZ11-8
CZ11-7
CZ11-6
CZ11-5
VFB-L-CH
CZ11-2
CZ11-1
CZ21-1
CZ21-2
VFB-R-CH
CZ21-5
CZ21-6
CZ21-7
CZ21-8
VFB-R-CH
HP_SW1
HP_SW2
ISC_TRIG
I-V
PPCB MOUNTED VERTICAL 90SC326PREDVR-9021000
MOUNTED ON HEATSINK
PCB MOUNTED VERTICAL
90SC326PREDVR-9021000

18
KEY BOARD
** One must add C528 to correct false "Protect" if not installed.
1PD3 2PD4 3GND3 4VCC4 5GND5 6VCC6 7PB6 8PB7
9
PD5
10
PD6
11
PD7
12
PB0
13
PB1
14
PB2
15
PB3
16
PB4
17
PB5
18
AVCC
19
ADC6
20
AREF
21
GND21
22
ADC7
23
PC0
24
PC1
25 PC2
26 PC3
27 PC4
28 PC5
29 PC6
30 PD0
31 PD1
32 PD2
U503
IC-ATMEGA48
S501
CD
S504
TUNER
S507
DISC
S502
VIDEO
S505
AUX
S508
TAPE
S503
MP
S506
TONE DEFEAT
R533
10K
R534
10K
R535
10K
C517
33P
C518
0.1u
C515
0.1u
1STROBE
2DATA
3CLOCK
4
Q1
5
Q2
6
Q3
7
Q4
8VSS
9
QS
10
QS
11
Q8
12
Q7
13
Q6
14
Q5
15 O/P_ENABLE
16
VDD
U501
HCF4094B
C511
0.1u
1STROBE
2DATA
3CLOCK
4
Q1
5
Q2
6
Q3
7
Q4
8VSS
9
QS
10
QS
11
Q8
12
Q7
13
Q6
14
Q5
15 O/P_ENABLE
16
VDD
U502
HCF4094B
C512
0.1u
R508
4K7
R507
4K7
Q504
MMBT5551
C506
10n
D502
VIDEO
R530
1K5
D505
AUX
C505
10n
Q503
MMBT5551
R505
4K7
R506
4K7
R502
4K7
R501
4K7
Q501
MMBT5551
C503
10n
D504
TUNER
D508
TAPE
C504
10n
Q502
MMBT5551
R503
4K7
R504
4K7
R512
4K7
R511
4K7
Q506
MMBT5551
C508
10n
D503 MP
C507
10n
Q505
MMBT5551
R509
4K7
R510
4K7
R514
4K7
R513
4K7
Q507
MMBT5551
C509
10n
D501
CD
D507
DISC
C510
10n
Q508
MMBT5551
R515
4K7
R516
4K7
D510
1N4148
D511
1N4148
R532
10K
D517
SOFT CLIPPING
C514
47U
16V
C513
0.1u
R523
0
Q513
MMBT5551
R525
1.5K
D512
1N4148
R524
10K
D513
1N4148
D509
1N4148
R526
10K
R536
10K
Q514
MMBT5551
R527
2.2K
R528
10K
R520 2K2
R521 2K2
R522 2K2
Q511
DTA114EKA
Q510
DTA114EKA
Q509
DTA114EKA
R5171K
R518 1K
R519 1K
1
2
J504A
TO HEADPHONE BOARD J504B
1
VOUT
2
GND
3
VCC
D515
D-IR-KODENSHI C521
47U
16V
C520
0.1u X501
20MHz
C522
33P
R539
10M
1
2
3
4
5
6
J506
ISP HEADER
S509
STANDBY
R541
4K7
Q515
MMBT5551
C523
10n
D506
TONE DEFEAT
R540
4K7
R542
10K
C524
0.1U
50V
R543
1K
1W
1
R
2
O
C
C
4
B
D516
R544
1K5
R545
1K5
1
2
3
4
5
6
J507A
TO MAIN J507B
1
2
3
4
5
6
7
J506A
TO MAIN J506B
1
2
3
4
5
6
7
8
9
10
J501A
TO MAIN J501B
C527
0.1u
**C528
10uF 50V
+5V
+5V
+5V
4094_STB
4094_DATA
4094_CLK
+5V
+5V
VI
AU TA TU
DI C
MPR
VIDEO
TUNER
DISC
VIDEO AUX TAPE TUNER
DISC CD MP_R MP_F
VI
AU
TA
TU
DI
C
MPR
+12V
VOL-
VOL+
+5V
+5V
+5V
THRM_SEN
THRM_PRO
MP_DET
POWER_ON
+5V
STANDBY
IR_OUT
+5V
IR_IN
+5V
STANDBY
PROTECTION
+12V
IR_OUT
IR_IN
+5V
MP_DET
THRM_SEN
RELAY
+22V
KEY05
+5V
KEY01
KEY02
KEY03
KEY04
KEY05
KEY06
KEY06
KEY04
RESET
RESET
MUTE
MUTE
BLUE
AMBER
RED
TONE
POWER_DOWN
+5V
+22V
TAPE
AUX
MP_R
MP_F
CD
PROTECTION
RELAY
SOFT_CLIPPING
VOL-
VOL+
MPF
TONE_DEFEAT
MUTE

19
PSU BOARD
To Transformer
To A C POWER CORD
To POWER SWITCH
T1.6AL/250V For 230V Mains Version
T2.5AL/250V For 120V Mains Version
To Transformer Thermostat
To Transformer
120V ONLY
C616
4.7n
400V
1
2
3
J605
1
2
3
J606
F601
C617
0.22u
275V
C618
4.7n
400V
R623
4K7
C619
100p
C620
100p
Q608
MMBT5551
R624
2K
R625
2K
Q609
MMBT5551
D615
GS1G
RL601-B
10A
5VDC
RL601-A
10A
5VDC
1
2
3
J608
-+
AC
AC
D606
DB105
600V 1A
C612
10uF
400V
C615
0.1u
1EN/UV
2BP/M
4D5
S5
6
S6
7
S7
8
S8
U601
TNY274-280
D607
FR107
R615
100K
1W
C611
10nF
1kV
1
5
6
7
9
10
T601
XFER-EE16
C610
2.2nF 250V Y1
D608
SR540
C609
330uF
10V
L602
10uH
C608
330uF
10V
C607
0.1u
R616 100
R617 220
D609
4V7
1/2W
1AN
2
CA
3
EM
4
C
U602
PC81713NSZ0F
1
2
3
4
5
J609
C606
2200uF
50V
C605
3300uF
50V
-+
AC
AC
D605
DB104
400V 1A
C604
10nF
250V
C603
10nF
250V
R613
4K7
R608
22K
Q605
MMBT5551
Q604
MMBT5401
R611
22K
R609
100
Q606
MMBT5551 R612
1K
R610
1K
D602
TYN612
600V 12A
C602
15000uF
63V
C601
15000uF
63V
1
2
J602A
-+
AC
AC
D604
KBU8D
200V 8A
-+
AC
AC
D603
KBU8D
200V 8A
R607
1K
Q603
MMBT5401
D601
TYN612
600V 12A
R606
100
R605
1K
R602
820K
Q602
MMBT5401
Q601
MMBT5401
R604
150
R603
0.05 5W
R601
150
1
2
J604
L601
1
2
J603A
D623
GS1G
D624
GS1G
C621
4.7U
50V
R628
1k 1W
1
2
3
4
5
6
7
8
9
J601A
TO MAIN J601B
R626
0.05 5W
R627
3.9M 1/2W
1
2
3
J604A
28.5V_2
28.5V_1
36.4V_2
36.4V_1
+46V
-46V
STANDBY
+5V
+5V
PGND
PGND
STANDBY
-46V
+46V
DGND
DGND
DGND
DGND
+22V
DGND
+22V
+5VX
+5V
ISC_TRIG
I-V
+37V
-37V
STANDBY
+5V

20
ELECTRICAL PARTS LIST
MAIN BOARD
PCB ASSEMBLY 50-901-0326-90 C326 MAIN ASSY HFE specific (with Heatsink)
REGULATORS
U104 01-004-0048-90 IC VOLT REG 5V 1A TO-220 NJM7805FA
ISOWATT (RoHS)(JRC)
RESISTOR
R253 R453 02-002-0172-90 RES MF 1.8K OHM 1% 1/2W AXIAL
TAPE & REEL (RoHS)
R239-240 R439-440 02-005-0074-90 MPR-RES 0.05 OHM 5W 5% E TYPE
14x5x18mm (RoHS)
R250 R450 02-010-0019-90 RES MO 10 OHM 5% 1W AXIAL (RoHS)
R206 R210 R406 R410 02-010-0020-90 RES MO 100 OHM 1W 5% FLAME-
PROOF AXIAL (RoHS)
R266 02-010-0027-90 RES MO 22 OHM 5% 1W AXIAL (RoHS)
R288 R291 02-010-0035-90 RES MO 33 OHM 5% 1/2W AXIAL
(RoHS)
R255 R455 02-010-0038-90 RES MO 3.3 OHM 5% 1W AXIAL (RoHS)
R197 R397 02-010-0040-90 RES MO 2.2K OHM 5% 2W AXIAL
(RoHS)
R483-484 02-010-0041-90 RES MO 220 OHM 5% 2W AXIAL (RoHS)
CAPACITORS
C149 C349 03-001-0062-90 CAP CER 15pF 50V 10% NPO ST2.5
(RoHS)
C195-196 C395-396 03-001-0063-90 CAP CER 22pF 50V 10% NPO RAD
(RoHS)
C128 C133 C328 C333 03-001-0064-90 CAP CER 220pF 50V 10% SL ST2.5
(RoHS)
C129 C134 C198-199 C329 C334 03-001-0070-90 CAP CER 33pF 50V +/-10% NPO TAPE
C398-399 TYPE (RoHS)
C219 C419 03-001-0071-90 CAP CER CK 4700pF 50V 10% Y5P RAD
ST5 CKB1H472K08BS(RoHS)
C151 C351 03-001-0076-90 CAP CER 39pF 50V 10% NPO RAD
(RoHS)
C156 C356 03-xxx-xxxx-90 E CAP 47uF/25V ±20% 85*C 5x11mm
P=2.0 GS (RoHS)
C161 C162 C197 C361-362 03-002-0011-90 E CAP 100uF/16V ±20% 85*C 5X11mm
P=2.0 GS (RoHS)
C144 C146 C150 C163 C177 C178-180 03-002-0043-90 E CAP 10uF/50V ±20% 85*C 5x11mm
C187 C344 C346 C350 C363 C376-377 P=2.0 GS (RoHS)
C111-112 C121 C147-148 C184-186 03-002-0046-90 E CAP 47uF/50V ±20% 85*C 6.3x11mm
C311-312 C321 C347-348 P=2.5 GS (RoHS)
C160 C360 03-002-0047-90 E CAP 100uF/50V ±20% 85*C 8x12mm
P=3.5 GS (RoHS)
C119 C319 03-002-0137-90 CAP ELEC SS 1uF 50V 20% 85C RAD
HEIGHT=7mm MAX (RoHS)
C152 C157 C352 C357 03-002-0185-90 E CAP 220uF/63V ±20% 85*C 10X20mm
P=5.0 GS (RoHS)
C155 C190-193 C355 03-002-0186-90 E CAP 220uF/50V ±20% 85*C 10X16mm
P=5.0 GS (RoHS)
C378-379 03-002-0190-90 E CAP 47uF/25V (NP) 6.3X11mm (RoHS)
C110 C207 C208 C310 C407 C408 03-004-0031-90 MPF CAP 104J/63V 5% Mini Box
7x2.5x6.5mm P=5 (RoHS)