NAD C 325BEE User manual

NAD
SERVICE MANUAL
C 325BEE
STEREO
AMPLIFIER
C 325BEE STEREO AMPLIFIER
1
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TABLE OF CONTENTS
DESCRIPTION PAGE
SERVICE CAUTION………………………………………………………… 3-4
REAR PANEL/FRONT PANEL VIEW………………………………………...5
SPECIFICATIONS………………………………………………………….6-7
WIRING DIAGRAM………………………………………………………………8
BLOCK DIAGRAM……………………………………………………. …….9-14
ALIGNMENT PROCEDURE……………………………………………..15
SCHEMATICS……………………………………………………………….16-19
PCB LAYOUT……………………………………………………………… 20-23
TROUBLE SHOOTING GUIDE…………………......................................24
ELECTRICAL PARTS LIST…………………………………………….25-34
EXPLODED VIEW……………………………………………………………..35
EXPLODED VIEW PARTS LIST……………………………………………...36
2
PROTECT IC CHANGE ..............……………………………………..……...37
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PRODUCT SAFETY SERVICING GUIDELINES
CAUTION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN
ANY WAY. NEVER PERFORM CUSTOMIZED INSTALLATIONS
WITHOUT MANUFACTURER’S APPROVAL. UNAUTHORIZED
MODIFICATIONS WILL NOT ONLY VOID THE WARRANTY, BUT
MAY LEAD TO YOUR BEING LIABLE FOR ANY RESULTING
PROPERTY DAMAGE OR USER INJURY.
SERVICE WORK SHOULD BE PERFORMED ONLY AFTER YOU
ARE THOROUGHLY FAMILIAR WITH ALL OF THE FOLLOWING
SAFETY CHECKS AND SERVICING GUIDELINES. TO DO
OTHERWISE, INCREASES THE RISK OF POTENTIAL HAZARDS
AND INJURY TO THE USER.
WHILE SERVICING, USE AN ISOLATION TRANSFORMER FOR
PROTECTION FROM AC LINE SHOCK.
SAFETY CHECKS
AFTER THE ORIGINAL SERVICE PROBLEM HAS BEEN
CORRECTED. A CHECK SHOULD BE MADE OF THE
FOLLOWING.
SUBJECT : FIRE & SHOCK HAZARD
1. BE SURE THAT ALL COMPONENTS ARE POSITIONED IN
SUCH A WAY AS TO AVOID POSSIBILITY OF ADJACENT
COMPONENT SHORTS. THIS IS ESPECIALLY IMPORTANT
ON THOSE MODULES WHICH ARE TRANSPORTED TO AND
FROM THE REPAIR SHOP.
2. NEVER RELEASE A REPAIR UNLESS ALL PROTECTIVE
DEVICES SUCH AS INSULATORS, BARRIERS, COVERS,
SHIELDS, STRAIN RELIEFS, POWER SUPPLY CORDS, AND
OTHER HARDWARE HAVE BEEN REINSTALLED PER
ORIGINAL DESIGN. BE SURE THAT THE SAFETY PURPOSE
OF THE POLARIZED LINE PLUG HAS NOT BEEN DEFEATED.
3. SOLDERING MUST BE INSPECTED TO DISCOVER POSSIBLE
COLD SOLDER JOINTS, SOLDER SPLASHES OR SHARP
SOLDER POINTS. BE CERTAIN TO REMOVE ALL LOOSE
FOREIGN PARTICLES.
4. CHECK FOR PHYSICAL EVIDENCE OF DAMAGE OR
DETERIORATION TO PARTS AND COMPONENTS. FOR
FRAYED LEADS, DAMAGED INSULATION (INCLUDING AC
CORD). AND REPLACE IF NECESSARY FOLLOW ORIGINAL
LAYOUT, LEAD LENGTH AND DRESS.
5. NO LEAD OR COMPONENT SHOULD TOUCH A RECEIVING
TUBE OR A RESISTOR RATED AT 1 WATT OR MORE. LEAD
TENSION AROUND PROTRUDING METAL SURFACES MUST
BE AVOIDED.
6. ALL CRITICAL COMPONENTS SUCH AS FUSES,
FLAMEPROOF RESISTORS, CAPACITORS, ETC. MUST BE
REPLACED WITH EXACT FACTORY TYPES, DO NOT USE
REPLACEMENT COMPONENTS OTHER THAN THOSE
SPECIFIED OR MAKE UNRECOMMENDED CIRCUIT
MODIFICATIONS.
7. AFTER RE-ASSEMBLY OF THE SET ALWAYS PERFORM AN
AC LEAKAGE TEST ON ALL EXPOSED METALLIC PARTS OF
THE CABINET, (THE CHANNEL SELECTOR KNOB, ANTENNA
TERMINALS. HANDLE AND SCREWS) TO BE SURE THE SET
IS SAFET TO OPERATE WITHOUT DANGER OF ELECTRICAL
SHOCK. DO NOT USE A LINE ISOLATION TRANSFORMER
DURING THIS TEST USE AN AC VOLTMETER, HAVING 5000
OHMS PER VOLT OR MORE SENSITIVITY, IN THE
FOLLOWING MANNER; CONNECT A 1500 OHM 10 WATT
RESISTOR, PARALLELED BY A .15 MFD, 150V AC TYPE
CAPACITOR BETWEEN A KNOWN GOOD EARTH GROUND
(WATER PIPE, CONDUIT, ETC.) AND THE EXPOSED
METALLIC PARTS, ONE AT A TIME.
MEASURE THE AC VOLTAGE ACROSS THE COMBINATION
OF 1500 OHM RESISTOR AND .15 MFD CAPACITOR.
REVERSE THE AC PLUG AND REPEAT AC VOLTAGE
MEASUREMENTS FOR EACH EXPOSED METALLIC PART.
VOLTAGE MEASURE MUST NOT EXCEED 75 VOLTS R.M.S.
THIS CORRESPONDS TO 0.5 MILLIAMP AC ANY VALUE
EXCEEDING THIS LIMIT CONSTITUTES A POTENTIAL
SHOCK HAZARD AND MUST BE CORRECTED IMMEDIATELY.
SUBJECT : GRAPHIC SYMBOLS
SUBJECT : TIPS ON PROPER INSTALLATION
1. NEVER INSTALL ANY PRODUCT IN A CLOSED-IN RECESS,
CUBBYHOLE OR CLOSELY FITTING SHELF SPACE. OVER
OR CLOSE TO HEAT DUCT, OR IN THE PATH OF HEATED
AIR FLOW.
2. AVOID CONDITIONS OF HIGH HUMIDITY SUCH AS:
OUTDOOR PATIO INSTALLATIONS WHERE DEW IS A
FACTOR, NEAR STEAM RADIATORS WHERE STEAM
LEAKAGE IS A FACTOR, ETC.
3. AVOID PLACEMENT WHERE DRAPERIES MAY OBSTRUCT
REAR VENTING. THE CUSTOMER SHOULD ALSO AVOID THE
USE OF DECORATIVE SCARVES OR OTHER COVERINGS
WHICH MIGHT OBSTRUCT VENTILATION.
4. WALL AND SHELF MOUNTED INSTALLATIONS USING A
COMMERCAL MOUNTING KIT MUST FOLLOW THE FACTORY
APPROVED MOUNTING INSTRUCTIONS A PRODUCT
MOUNTED TO A SHELF OR PLATFORM MUST RETAIN ITS
ORIGINAL FEET (OR THE EQUIVALENT THICKNESS IN
SPACERS) TO PROVIDE ADEQUATE AIR FLOW ACROSS
THE BOTTOM, BOLTS OR SCREWS USED FOR FASTENERS
MUST NOT TOUCH ANY PARTS OR WIRING. PERFORM
LEAKAGE TEST ON CUSTOMIZED INSTALLATIONS.
5. CAUTION CUSTOMERS AGAINST THE MOUNTING OF A
PRODUCT ON SLOPING SHELF OR A TILTED POSITION,
UNLESS THE PRODUCT IS PROPERLY SECURED.
6. A PRODUCT ON A ROLL-ABOUT CART SHOULD BE STABLE
ON ITS MOUNTING TO THE CART. CAUTION THE
CUSTOMER ON THE HAZARDS OF TRYING TO ROLL A CART
WITH SMALL CASTERS ACROSS THRESHOLDS OR DEEP
PILE CARPETS.
7. CAUTION CUSTOMERS AGAINST THE USE OF A CART OR
STAND WHICH HAS NOT BEEN LISTED BY UNDERWRITERS
LABORATORIES, INC. FOR USE WITH THEIR SPECIFIC
MODEL OF TELEVISION RECEIVER OR GENERICALLY
APPROVED FOR USE WITH T.V.’S OF THE SAME OR
LARGER SCREEN SIZE.
8. CAUTION CUSTOMERS AGAINST THE USE OF EXTENSION
CORDS, EXPLAIN THAT A FOREST OF EXTENSIONS
SPROUTING FROM A SINGLE OUTLET CAN LEAD TO
DISASTROUS CONSEQUENCES TO HOME AND FAMILY.
THE LIGHTNING FLASH WITH ARROWHEAD SYMBOL, WITHIN AN
EQUILATERAL TRIANGLE, IS INTENDED TO ALERT THE USER TO THE
PRESENCE OF UNINSULATED “DANGEROUS VOLTAGE” WITHIN THE
PRODUCT’S ENCLOSURE THAT MAY BE OF SUFFICIENT MAGNITUDE TO
CONSTITUTE A RISK OF ELECTRIC SHOCK.
THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS
INTENDED TO ALERT THE USER TO THE PRESENCE OF IMPORTANT
OPERATING AND MAINTENANCE (SERVICING) INSTRUCTIONS IN THE
LITERATURE ACCOMPANYING THE APPLIANCE.
3
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SERVICING PRECAUTIONS
CAUTION : Before servicing the A/V Receiver covered by this
service data and its supplements and addends, read and follow the
SAFETY PRECAUTIONS. NOTE : if unforeseen circumstances
create conflict between the following servicing precautions and any
of the safety precautions in this publication, always follow the safety
precautions.
Remember Safety First:
General Servicing Precautions
1. Always unplug the A/V Receiver AC power cord from the AC
power source before:
(1) Removing or reinstalling any component, circuit board,
module, or any other assembly.
(2) Disconnecting or reconnecting any internal electrical plug or
other electrical connection.
(3) Connecting a test substitute in parallel with an electrolytic
capacitor.
Caution : A wrong part substitution or incorrect polarity installation
of electrolytic capacitors may result in an explosion hazard.
2. Do not spray chemicals on or near this A/V Receiver or any of its
assemblies.
3. Unless specified otherwise in this service data, clean electrical
contacts by applying an appropriate contact cleaning solution to
the contacts with a pipe cleaner, cottontipped swab, or
comparable soft applicator.
Unless specified otherwise in this service data, lubrication of
contacts is not required.
4. Do not defeat any plug/socket B+ voltage interlocks with which
instruments covered by this service manual might be equipped.
5. Do not apply AC power to this A/V Receiver and/or any of its
electrical assemblies unless all solid-state device heat sinks are
correctly installed.
6. Always connect test instrument ground lead to the appropriate
ground before connecting the test instrument positive lead. Always
remove the test instrument ground lead last.
Insulation Checking Procedure
Disconnect the attachment plug from the AC outlet and turn the
power on. Connect an insulation resistance meter(500V) to the
blades of the attachment plug. The insulation resistance between
each blade of the attachment plug and accessible conductive parts
(Note 1) should be more than 1M-ohm.
Note 1 : Accessible Conductive Parts including Metal panels, Input
terminals, Earphone jacks, etc.
Electrostatically Sensitive (ES) Devices
Some semiconductor (solid state) devices can be damaged easily by
static electricity. Such components commonly are called
Electrostatically Sensitive (ES) Devices. Examples of typical Es
devices are integrated circuits and some field effect transistors and
semiconductor chip components.
The following techniques should be used to help reduce the
incidence of component damage caused by static electricity.
1. Immediately before handling any semiconductor component or
semiconductor-equipped assembly, drain off any electrostatic
charge on your body by touching a known earth ground.
Alternatively, obtain and wear a commercially available
discharging wrist strap device, which should be removed for
potential shock reasons prior to applying power to the unit under
test.
2. After removing an electrical assembly equipped with ES devices,
place the assembly on a conductive surface such as aluminum
foil, to prevent electrostatic charge buildup or exposure of the
assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ES
devices.
4. Use only an antistatic solder removal device. Some solder
removal devices not classified a “anti-static” can generate
electrical charges sufficient to damage ES devices.
5. Do not use freonpropelled chemicals. These can generate
electrical charge sufficient to damage ES devices.
6. Do not remove a replacement ES device from its protective
package until immediately before you are ready to install it. (Most
replacement ES devices are packaged with leads electrically
shorted together by conductive foam, aluminum foil, or
comparable conductive material).
7. lmmediately before removing the protective material from the
leads of a replacement ES device, touch the protective material to
the chassis or circuit assembly into which the device will be
installed.
Caution : Be sure no power is applied to the chassis or circuit, and
observe all other safety precautions.
8. Minimize bodily motions when handing unpackaged replacement
ES devices. (Normally harmless motion such as the brushing
together of your clothes fabric or the lifting of your foot from a
carpeted floor can generate static electricity sufficient to damage
an ES device.)
4
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SPECIFICATIONS
POWER AMPLIFIER SECTION
STEREO MODE
CONTINUOUS AVERAGE POWER 50 W (17 dBW)
OUTPUT INTO 8 OHMS OR 4 OHMS
(Min. power per channel, 20 Hz – 20 kHz,
with no more than rated distortion)
Rated Distortion 0.03%
(THD 20 Hz – 20 kHz)
Clipping power 68 W
(maximum continuous power per channel 4 and 8).
IHF dynamic headroom: at 8 ohms + 3.4 dB
at 4 ohms + 5.0 dB
IHF dynamic power
(maximum short term power per channel)
8 ohms: 110 W (20.4 dBW)
4 ohms: 160 W (22.0 dBW)
2 ohms: 210 W (23.2 dBW)
Damping factor > 100
(ref. 8 ohms 1 kHz)
Input Impedance R = 20 kohms
C = 1 nF
Input sensitivity (for rated output into 8 ohms) 630 mV
Voltage gain 29 dB
Frequency response 20 Hz – 20 kHz 0.2 dB
Signal / Noise ratio, A-weighted 100 dB ref. 1 W
117 dB ref. 50 W
THD + Noise < 0.03%
(Total Harmonic Distortion, 20 Hz – 20 kHz,
from 250 mW to rated output)
SMPTE I.M. < 0.01%
(Intermodulation Distortion, 60 Hz + 7 kHz, 4:1,
from 250 mW to rated output)
IHF I.M. < 0.01%
(CCIF IM Distortion, 19 + 20 kHz at rated output)
Headphones Output Impedance 220 ohms
6
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PREAMPLIFIER SECTION
LINE LEVEL INPUTS
(Disk, CD, Video, Auxiliary, Tuner, Tape 1,Tape 2)
Input impedance (R and C) 200 kohms + 320 pF
Input sensitivity (ref. rated power) 220 mV
Maximum input signal 6 V
Signal / Noise ratio, A-weighted 93.0 dB ref. 1W
(from CD Input to Speakers Output, Volume Setting
for 500mV in , 8ohms 1W out)
Signal to noise ratio preamp out, IHF “A” weighted 106 dB re 500mV
Frequency response, 20 Hz – 20 kHz < +/-0.1 dB (tone defeat on)
< +/-0.5 dB (tone defeat off)
THD + Noise, SMPTE IM < 0.01% at 5 V out
LINE LEVEL OUTPUTS
Pre-amp output impedance 80 ohms
Tape output impedance Source Z + 1kohms
Maximum output level pre-amp out : > 12 V
Tape-out : > 10 V
CONTROLS
Treble +/- 5 dB at 10 kHz
Bass +/- 8 dB at 100 Hz
IR IN and OUT
Input Resistance > 10 kohms
Input Voltage Min 5 V
Output Resistance < 30 ohms
TRIGGER Out
Output Current 50 mA
Output Voltage 12 V
DIMENSIONS AND WEIGHTS
Net Weight 6.5 kg ( 14.3 Ib)
Shipping Weight 8 kg ( 17.6 Ib)
DIMENSION (W×H×D) 435
× 100 × 290MM
7
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+46V RED
Ipod SOCKET BOARD
-46V WHITE
CB11
P5-GND
+46V RED
CB33
-46V WHITE
CB52
CB53
CB58
HEADPHONE BOARD
STANDBY BOARD
CZ45
POWER BOARD CZ72
IR BOARD
CB54
Q115
P4-R
P3-R
CB55
CB57
CB59
CB56
CB51
OUT MODULE BOARD
CB73
CB74
S72
S71 S73
S74
S76
S75
CZ73 CB72
CZ71
S77
CZ72_1
CB61
CB61
CZ74
CZ75
KEY BOARD
AMP-SMD-R BOARD
IN MODULE BOARD
AMP-SMD-L BOARD
CB32
CB21
CZ11 CZ21
CB34
CB31
CB35
MAIN BOARD
T401(TRANSFORMER)
P1-L
CB47
Q114
Q214
P2-L
Q215
CB45
POWER SWITCH
WIRING DIAGRAM
AC POWER PLUG
AC OUTLET
8
01-32560-02
01-32560-01
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TAPE1 OUT L
INPUT SELECTION
CIRCUIT (BY RELAY)
DISC L
DISC R
CD R
VIDEO R
AUX R
TAPE1 IN R
TAPE1 IN L
AUX L
VIDEO L
CD L
IC 75
CD4094
MCU
PREAPM MODULE
AMP CIRCUIT
IN
˄˅
BASS
RT31
RT32
RT34
TREBLE
BALANCE
SW31
TONE DEFEAT
RT33
VOLUME
MUTE
MUTE
Q31 PRE-OUT L
Q32 PRE-OUT R
MAIN IN R
MAIN IN L
SOFT CLIPPING
CONTROL CIRCUIT
S41
POWER AMP
CIRCUIT L
CIRCUIT R
POWER AMP
PROTECTION
CIRCUIT
(IC44,UPC1237HA)
RL12/2
ISC CIRCUIT
(IC43,TL082D)
TRIG I-V
MIRROR
SOURCE
SCR
CIRCUIT
(1,2,3)
4
5
VOL-
VOL+ VOLUME CONTROL
CIRCUIT (REMOTE)
MUTE
CIRUIT
JK41
R467
POSISTOR
(80 DEGREE C)
R439
POSISTOR
(90 DEGREE C)
BLOCK DIAGRAM
HEADPHONE
TUNER R
TUNER L
CONTROL
CURRENT
CIRCUIT
CONTROL CONTROL
MP R
MP L
TAPE2 IN L
TAPE2 IN R
TAPE2 OUT R
TAPE2 OUT L
TAPE1 OUT R
Relay Switchs
IC74
CD4094
MCU
(1,3)
92
(4,5,6,7
11,12,13,14)
PREAPM MODULE
AMP CIRCUIT
OUT
˄˅
Speaker R
Speaker L
F1AA012V
9
01-32560-02
01-32560-01
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2
31
IC72
IS1U60L
+5V
+5V
13
2IC76
TCM810MEND
IR OUT
CIRCUIT
IR IN
CIRCUIT
10k
10K
2K2
Q717 +5V
Sandby control line
18V Power Supply
Circuit
27pF
MICROPROCESSOR CONNECTION DIAGRAM
+5V
RST/VPP 1
P3.0(RXD) 2 P3.1(TXD) 3
XTAL2 4 XTAL1 5
P3.2(INTO) 6
P3.3(INT1) 7
P3.4 8 P3.5 9
GND 10
P3.7
11
(AIN0)P1.0
12
(AIN1)P1.1
13
P1.2
14
P1.2
15
P1.4
16
P1.5
17
P1.6
18
P1.7
19
VCC
20
IC73
AT89C4051
NC 1 NC 2 NC 3
Vss 4
SDA
5
SCL
6
NC
7
Vcc
8
IC71
24C01
C79
C710
27pF
Y71
11.0592M
Q1
4Q2
5Q3
6Q4
7Q5
14 Q6
13 Q7
12 Q8
11
QS
9QS
10
STR 1
D2
CLK 3
OE 15
VCC 16
VEE 8
IC74
4094
Q1
4Q2
5Q3
6Q4
7Q5
14 Q6
13 Q7
12 Q8
11
QS
9QS
10
STR 1
D2
CLK 3
OE 15
VCC 16
VEE 8
IC75
4094
C
TU
TA2
TA1
DI
IP
VI
AU
TO RELAY CONTROL CIRCUITTO VOL CONTROL CIRCUIT
PHONE71
Ipod IN
Input selection
Keys
+5V
+5V
10k
+5V
IR Flash Mute Flash Remote Mute Flash
10
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TL082D
MAIN BOARD IC41&IC42&IC43
-++ -
AB
1
2
3
45
6
7
8V+
OUTPUT B
INVERTING INPUT B
NON-INVERTING INPUT B
V-
NON-INVERTING INPUT A
INVERTING INPUT A
OUTPUT A
KEY BOARD IC74&IC75
CD4094
2
CL
CL
DQ
1CL
CL
DQ
2
TR
TR
TR
TR
3
1
*VDD
VSS
* ALLINPUTS
PROTECTED BY
CMOS PROTECTION
NETWORK
CL
CL
8
CL
CL
n
p
DQ
Q
10
CL
CL
n
p
Q'S
SERIAL
OUT
11
Q8
TR
TR
LATCH
8
3
STATE
8
10
QS
SERIAL
OUT
STAGES
3-7
4567121314
LATCH
2
3-
STATE
2
CLOCK
*
STROBE
*
CL
CL
TR
TR
OUTPUT ENABLE
*
15
TR
TR
LATCH
1
pn n
VDD VSS
Q1 Q2 Q3 Q4 Q5 Q6 Q7
3 - STSTE
1
1
2
3
4
5
6
7
89
10
11
12
13
14
15
16
STROBE
DATA
CLK
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
QS
Q'S
VSS
VDD
OUTPUT ENABLE
PIN CONFIGURATION
11
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uPC1237HA
MAIN BOARD: IC44
Overload Detector
Output Offset Detector
Switch for latch/automatic --reset
Flip--Flop
VCC ON
MUTE
AC---OFF detector
Relay driver
1
2
43
5
78
6
GND
VCC
ICS BLOCK DIAGRAM
18
8PIN PLASTIC SLIM SIP
12
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VCC
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SCL
SDA
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A
T89C4051
KEY BOARD IC73
Pin Configuration
PDIP/SOIC
RST/VPP 1
(RXD) P3.0 2
(TXD) P3.1 3
XTAL2 4
XTAL1 5
( INT0 ) P3.2 6
(TO) P3.4 8
( INT1 ) P3.3 7
(T1) P3.5 9
GND 10 P3.7
11
P1.0 (AIN0)
12
P1.1 (AIN1)
13
P1.2
14
P1.3
15
P1.4
16
P1.5
17
P1.6
18
P1.7
19
VCC
20
RAM ADDR.
REGISTER RMA
B
REGISTER ACC
TMP2 TMP1
ALU
PSW
TIMING
AND
CONTROL
INSTRUCTION
REGISTER
OSC
+
-
ANALOG
COMPARATOR
PORT 1
LATCH
PORT 1 DRIVERS PORT 3 DRIVERS
PORT 3
LATCH
INTERRUPT SERIAL PORT
AND TIMER BLOCKS
DPTR
PROGRAM
COUNTER
PC
INCREMENTER
BUFFER
PROGRAM
ADDRESS
REGISTER
FLASH
STACK
POINTER
P 1.0 - P 1.7 P 3.0 - P 3.5 P 3.7
RST
Vcc
GND
Block Diagram
14
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ALIGNMENT PROCEDURES
I. INITIAL
A. LOWEST VOLUME ADJUSTMENT
3. Connect a oscilloscope to L channel binding posts.
1. Tune the volume pot to lowest state.
2. Input a high voltage signal such as 5V from CD input.
4. Observing the oscilloscope,adjust VR301,make the output of speakers become to the
5. Adjusting VR302,make R channel output become to the lowest level by same way.
B. IDLING CURRENT
2. Connect a DC voltmeter toTP1 and TP2 ,adjust VR22 for 4mV reading on voltmeter.
3. Connect a DC voltmeter toTP3 and TP4 ,adjust VR12 for 4mV reading on voltmeter.
1. Level power on for a minimum of 5 minutes
II. FINAL ADJUSTMENT
Repeat procedure A,B and C for the lowest volume level, idling current alignment
and ISC original level respectively.
TP1
TP2
TP3
TP4
VR22
VR12
VR301
VR302
MAIN BOARD
lowest level.
C325BEE
VR3
TP10 TP11
C.ISC CIRCUIT ORIGINAL ADJUSTING
Adjust the pot VR3 to make the DC voltage of the point of TP10 to the same as TP11
15
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C61
220p
R61
220
R63
1M
Q61
2SK170
R67
1K
R69
430 2%
Q63
A970 Q67
D667
C63
22p
R611
1K
Q64
B647
R613
10K
D61
1N4148
D62
1N4148
R615
33
C65
0.1u 20%
C66
0.1u 20%
C69
100p
R618
10 R619 10
R620
10
1
2
3
4
5
6
7
8
9
CZ61
CON9
R621 30K
C611
GND
+18V
-18V
LOUT
ROUT
RIN-
RIN+
LIN+
LIN-
PREAMP IN/OUT MODULE BOARD Vm1.2
Note:C611 is 43pF ON "IN MODULE"
75pF ON "OUT MODULE"
C62
220p
R62
220
R64
1M
Q62
2SK170
R68
1K
R610
430 2%
Q65
A970 Q68
D667
C64
22p
R612
1K
Q66
B647
R614
10K
D63
1N4148
D64
1N4148
R616
33
C67
0.1u 20%
C68
0.1u 20%
C610
100p
R617
10
RCA31A
DISC
RCA31C
CD
RCA32A
VIDEO
RCA32C
AUX
RCA33A
TUNER
RCA33C
TAPE2
RCA34C
REC1
RCA34A
TAPE1
RCA33E
REC2
R31
470
R33
470
R35
470
C31
100p
C33
100p
C35
100p
R37
470
R39
470
R311
470
C37
100p
C39
100p
C311
100p
R313
470
R315
470
R317
470
C313
100p
C315
100p
C317
100p
C319
0.1u 10%
C324
47u/25
C323
47u/25
C325
47u/25
R321
3K3 MF
R323
750 MF
R319
N.I.
R325
390 MF
R327
180 MF
C327
22n 5%
C329
0.1u 5%
R329
1K5 MF
R331
390 MF
C331 0.22uC333
1u,63V,5%
C335
N.I.
1
2
3
SW31A
4
5
6
SW31B
RCA35A
L PRE-OUT
Q31
K363
C343
220p
R389
10M
C339
1u/16
RL31B
RL32B
RL33B
RL34B
RL35B
RL36B
RL37B
RL38B
RCA31B
DISC
RCA31D
CD
RCA32B
VIDEO
RCA32D
AUX
RCA33B
TUNER
RCA33D
TAPE2
RCA34D
REC1
RCA34B
TAPE1
RCA33F
REC2
R32
470
R34
470
R36
470
C32
100p
C34
100p
C36
100p
R38
470
R310
470
R312
470
C38
100p
C310
100p
C312
100p
R314
470
R316
470
R318
470
C314
100p
C316
100p
C318
100p
RL31A
RL32A
RL33A
RL34A
RL35A
RL36A
RL37A
RL38A
TONE DEFEAT SW
R333
4.7K
R335
68
C341
47u/25
C320
0.1u 10%
C326
47u/25
R322
3K3 MF
R324
750 MF
R320
N.I.
R326
390 MF
R328
180 MF
C328
22n 5%
C330
0.1u 5%
R330
1K5 MF
R332
390 MF
C332
0.22u 5%
C334 1u,63V,5%
C336
N.I.
RCA35B
R PRE-OUT
Q32
K363
C344 220p
R390
10M
C340
1u/16
TONE DEFEAT SW
R334
4.7K
R336
68
C342
47u/25
R407
1K
R402
10K R404 10K
R403
1K R405 1K
R406
1K
C417
4u7/25V C418 4u7/25V
RL31C RL32C RL33C RL34C RL35C RL36C RL37C RL38C
D37
1N4148 D38 1N4148 D39 1N4148 D310 1N4148 D311 1N4148 D312 1N4148 D313 1N4148
VOLUME CONROL
BY MOTOR
BY MOTOR
R348
100K
R347
100K
R341
1M
R342
1M
R343
1M
R339
1M
R338
1M
R337
1M
R346
220K
R345
220K
R349
1M
R351
1M
R353
1M
R355
1M
R357
1M
R350
1M
R352
1M
R354
1M
R356
1M
R358
1M
1
2
3
4
5
6
7
8
9
CB34
1
2
3
4
5
6
7
8
9
10
CB31
1
2
3
4
5
6
7
8
9
CB32
LOW NOISE AMP
1
2
3
4
5
6
7
8
9
CB33
OUT MODULE
MF
MF
ON
OFF
OFF
ON
TO CZ72
TO CZ71
L-CH INPUTS
R-CH INPUTS
VOLUME POT
VOLUME POT
BALANCE POT BALANCE POT
BASS POT
BASS POT
TREBLE POTTREBLE POT
Soft Cliping
CD
VIDEO
TUNER
AUX
TAP2
TAP1
DISC
REMOTE MUTE
Protection
VOL-
VOL+
+12V
IRIN
IROUT
63V
63V
63V
63V
5%,63V
+5V
DISC CD VIDEO AUX TUNER TAP2 TAP1
+12V
-18V
+18V
+5V
Soft Cliping
Protection
-18V
+18V
+18V
-18V
+5V
+18V
-18V
C337
0.1U C345
0.1uF
C338
0.1u C346 0.1uF
C321
0.1U
C322
0.1U
Standby
Standby
C325BEE TONE CONTROL CIR.
C303
220p C302 220p
C301
10uF/50V
Q411
A1015
R436
56K
R435
390k
R489
100K
R457
220K
R451
330K
D423
1N4148
R448
100K
C434
22n/63V
+18V
-46V
+5V
LOW NOISE AMP
IN MODULE
-46V-46V
+12V
PHONE1A
IR OUT
PHONE1B
IR IN
PHONE2
+12V Trigger
R2
10
C3 0.1uF
RI1 10K
QI1
2SC1815
RI2
1K
QI2
2SA1015
RI3
33
+5V
+5V
RI6 10K
RI4
4.7K
C362
10n
RI510K
VR302
100
R386
1.8
R384
560 1%
VR301
100
R385
1.8
R383
560 1%
C350 N.I.
R388
20k
C349 N.I.
R387
20K
C325BEE RELAY CONTROL CIR.
+12V+12V
RT31A
10KA
RT31B 10KA
RT32B
10KA
RT32A 10KA
RT34A 20K MN
RT34B 20K MN
Q402
C1815 Q404 C1815
Q401
A1015 Q403
A1015
D314
N.I.
D315
1N4148
R391 560 1%
R392 560 1%
R361
N.I.
R362
N.I.
R363
51K
R364
51K
12V TRIG
RT33A 20KB
RT33B
20KB
- +
M
RT33C
20KB
Ipod
Ipod-R 1
2
3
CB35
CON3
RL39C
D316
1N4148
Ipod
RL39B
RL39A
R393
470
R394
1M
R395
1M
R396
470 C305
100P
C304
100P
Ipod-L
VR304
30K
VR303
30K
RI7
330,5%
C363
100pF
C364
100pF
PCB-6/7:OUT/IN MODULE BOARD Vm1.0
SCHEMATICS DIAGRAM
PREAMP CIRCUIT Vm1.2
PCB-1:MAIN BOARD Vm2.0
16
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Over Heat Protection:
It shutsdown the unit
when the temperature on
the heatsink is over 90C
degrees.
It also shutsdown the unit
when the unit entersthe
standbymode.
ISC Circuit:
It switch the power
supplyto lower voltage
when the load
impedance is low, or the
temperature on the
heatsink is over 80C
degree
C219
22n 10% 63V
RCA35D
MAIN-IN R-CH
R156
470K
R11
470
C11
10u/16V
R15
22K
R14
100
C15
220uF/63V
C16
220uF/63V
Q110
KSA1220
Q111
KSC2690
R124
3.3/0.5W FP
R125
3.3/0.5W
R128
330/0.5W FP
R129
330/0.5W
C110
47u/25V
C111
47u/25V
R126
3K3/2W FP
R127
3K3/2W FP
R130
82/1W FS
R131
82/1W FS
R142
22,MF,5%
R143
22,MF,5%
R136
10
R137
10
Q112
KSC2690
Q115
2SC5200
Q114
2SA1943
Q113
KSA1220
R144
0.068/3W CE
R145
0.068/3W CE
R139
412
L11
0.5uH
R150
1/1W FP
R151
10/1W FS
C118
0.1u 10% 63V
C115
0.1u
C114
0.1u
R21
470
R12
220K
R22
220K
C112
470p,100V,20%
C113
470p,100V,20%
R147
1K Q11
C1815
Q12/1
A1015
R152
22K
R12/1
6K8
R148
15K
C120
22n 10%
D17
1N4148
RCA35C
MAIN-IN L-CH
R146
1K8,1W,1%,MF
Q116
KSC2690
R138
430
Q47
A1015
Q45
A1015
Q46
C1815
R417
100
R419
100
R418
100
R416
100
C415
10u/25V
C416
10u/25V
R422
1.3K
R423
1.3K
R424
1.3K
R425
1.3K
R420
36K
R421
36K
D411
20V
D410
20V
1
2
3
S41A
4
5
6
S41B
ON
OFF
TP4
TP3
FS
FS
POWER AMP CIR. R
+46V
-46V
+46V
-46V
D11
4.7V
D12
4.7V
R108
39,MF,5%
R107
39,MF,5%
Q48
C1815
C17
0.1uF/63V
C12/1
47uF/25V
VR12
200
C119
22n 10% 63V
C21
10u/16V
R25
22K
R24
100
C25
220uF/63V
C26
220uF/63V
Q210
KSA1220
Q211
KSC2690
R224
3.3/0.5W FP
R225
3.3/0.5W
R228
330/0.5W FP
R229
330/0.5W
C210
47u/25V
C211
47u/25V
R226
3K3/2W
R227
3K3/2W
R230
82/1W FS
R231
82/1W FS
R242
22,MF,5%
R243
22,MF,5%
R236
10
R237
10
Q212
KSC2690
Q215
2SC5200
Q214
2SA1943
Q213
KSA1220
R244
0.068/3W CE
R245
0.068/3W CE
R239
412
L21
0.5uH
R250
1/1W FP
R251
10/1W FS C218
0.1u 10% 63v
C215
0.1u
C214
0.1u 10% 63V
TP1
C212
470p,100V,20%
C213
470p,100V,20%
R247
1K
R248
15K
R252
22K
Q21
C1815
C220
22n 10%
D27
1N4148
R246
1K8,1W,1%,MF
Q216
KSC2690
R238
430
TP2
FP
FS
FS
63V
+46V
-46V
D21
4.7V
D22
4.7V
R207
39,MF,5%
R208
39,MF,5%
C27
0.1uF/63V
R256
470K
R257
470K C222
1uF,63V,5%
C221
1uF,63V,5%
R258
2.2k
-18V
+18V
VR22
200
POWER AMP CIR. L
SUPPLY CIR.
R12/2
22K
O/P RELAY
L OUT
R OUT
D412
1N4148
BINDING POSTS
R446
56K R445 56K
C422
330u/16V C421
4u7/50V
C432
0.22u
R443
150 1/2W FS
R441
4.7K
R442
56K C420
100u/16V
PROTECTION CIR.
0V
0V
+3.25V
+2.16V
0V
0V
+2.0V
+18V
+46V
R478
100K
12
3
IC43A
TL082D
R480
3K9
R482
4K7
R479
100K
C428
10u/25V
C425
10u/25V
R470
10K
R471
10K
D418
1N4148 D417
1N4148
R477
47K
R483
270K
R473
43K
R472
470K
C426
10u/25V
C429
10u/25V
R488
18K
R487
18K
D420
1N4148 D419
1N4148
R474 1K
C430
10u/25V
R476
1K
C431
10u/25V
R490
100K
R491
100K
4
5
67
8
IC43B
TL082D
+18V
-18V
1
2
3
4
5
6
7
CB47
7PIN
-37V
+37V
1
2
3
4
5
CB45
R453
220/2W FPR452
220/2W FP
R438
22K
R439
T0=90 degree C
Q412
C1815
POSISTOR
+18V
1
2
3 4 5
6
7 8
IC44
UPC1237HA
1 2
3 4
5 6
RL12/1
F1AA012V
1
2
3
4
SPKOUT
D42
1N4148
D43
1N4148
R437
47K
STANDBY R440
2K2
+18V
ISC CIRCUIT
+12V
Protection
Soft Cliping
+5V
+18V
-18V+5V +18V-18V+12V
Standby
STANDBY
R45
33/0.5W FS R41
680
R43
680
*
R47
680 C43
220u/63V
C413
220u/35V
Q41
2SC2690
C45
22p
R49
680
R411
680
R413
680
D49
18V
C47
47u/25V
C49 47u/25V
R414
2K2
R46
33 / 0.5W FS
R42
680
R44
680
R48
680
C44
220u/63V
C414
220u/35V
Q43
C1815
C46
22p
R410
680
C48
10u/25V
C410 47u/25V
R412
2K
Q42
2SA1220
Q44
A1015
C411
0.1uF
C412
0.1u
R428
2K2
R429
5K1
MF
MF
+18V
-18V
R401
4K7
D403
1N4148
STANDBY
C443
0.1uF C41
0.1uF
I-V
AC DET.
ISC TRIG
-46V
-46V
Q421
C1815
R469
10K R468 22K
R467
T0=80 degree C
D428
1N4148
+18V
SOFT CLIPING CIR.
7
6
5
48
IC42B
TL082D
-46V+46V
P3-RP4-R
P5-GND
R493
180k
VR3
10K
+18V
R133
3K3/2W
R132
3K3/2W FP
R232
3K3/2W FP
R233
3K3/2W FP
R260
1K,5%
R261
1K,5%
-46V+46V
P1-LP2-L
R157
470K C122
1uF,63V,5%
C121
1uF,63V,5%
R158
2.2k
-18V
+18V
1
2
3
48
IC41A
TL082D
R160
1K,5%
R161
1K,5%
D430 DB104
C444
4700uF/16V
C445
100uF
3
1
2
IC45
AMS1117-5.0
+5V
R427
22/1W FP
Q413
KSC2690
Q414
C1815
+37V
+12V
C419
10uF
Q422
D667
Q423
C2240
R494
12
12V TRIG C446
10uF
R495
510
1
2
3
4
5
6
7
8
CZ11
CON8
1
2
3
4
5
6
7
8
CZ21
CON8
+18V
+18V
-18V
-18V
D101
1N4148
D102
1N4148
D103
1N4148
C123
0.1uF
R162
1K
R163
1K
R164
10K R165 10K
R167
1K
R166
5K6
R168
1K
D201
1N4148
D202
1N4148
D203
1N4148
C223
0.1uF
R262
1K
R263
1K
R264
10K R265
10K
R267
1K
R266
5K6
R268
1K
Q217
2SA970
Q117
2SA970
Q118
2SC2240
Q218
2SC2240
IC11
AZ431
IC21
AZ431
JK41
1
2
3
4
5
CZ45
PHONES SOCKET
C325BEE HEADPHONE BOARD Vm1.2
N8C320D03
R455
100,2W
R454
100,2W
R169
1M2
R269
1M2
C227
N.I.
C127
N.I.
TP10
TP11
Q22
A1312-GR
Q23
C3324-GR
C22
1nF
R29
39k,MF,5%
R211
100,MF,5%
R212
100,MF,5%
R210
39k,MF,5%
C24
10u/35V
C23
10u/35V
Q24
C3324-GR
Q25
A1312-GR
R215
15
R216
15
R203
82,MF,5%
Q26
A1015
Q27
C1815
R219
82,MF,5%
R220
82,MF,5%
C28
39p
C29
39p
L22 100uF
R259 100,5%
1
2
3
4
5
6
7
8
CZ21
CON9
Q202
A1312-GR
R223
47K
R249
68,1/4 1% MF
Q29
2SD667
Q201
C3324-GR
Q28
2SB647
D23
1N4148
D25
1N4148
D24
1N4148
D26
1N4148
R204
220k,MF,5% R202
220k,MF,5%
-18V
+18V
R254
10
R255
10
Q203
C3324-GR
R222
100K,MF,5%
C203
22uF/16V
R201
39K,MF,5%
R221
100K,MF
R206
82,MF,5%
R205
39k,MF,5%
Q204
A1312-GR
C204
22uF/16V
R269 330
C224 1nF
Q12
A1312-GR
Q13
C3324-GR
C12
1nF
R19
39k,MF,5%
R111
100,MF,5%
R112
100,MF,5%
R110
39k,MF,5%
C14
10u/35V
C13
10u/35V
Q14
C3324-GR
Q15
A1312-GR
R115
15
R116
15
R103
82,MF,5%
Q16
A1015
Q17
C1815
R119
82,MF,5%
R120
82,MF,5%
C18
39p
C19
39p
L12 100uF
R159 100,5%
1
2
3
4
5
6
7
8
CZ11
CON9
Q102
A1312-GR
R123
47K
R149
68,1/4 1% MF
Q19
2SD667
Q101
C3324-GR
Q18
2SB647
D13
1N4148
D15
1N4148
D14
1N4148
D16
1N4148
R104
220k,MF,5% R102
220k,MF,5%
-18V
+18V
R154
10
R155
10
Q103
C3324-GR
R122
100K,MF,5%
C103
22uF/16V
R101
39K,MF,5%
R121
100K,MF
R106
82,MF,5%
R105
39k,MF,5%
Q104
A1312-GR
C104
22uF/16V
R169 330
C124 1nF
AMP-SMD MODULE L CHANNEL Vm1.4
D431
3.6V
PCB-10:HEADPHONE Vm1.0
SCHEMATICS DIAGRAM(1/4)
AMP CIRCUIT Vm1.4
PCB-1:MAIN BAORD Vm2.0
PCB-4:AMP-SMD-L Vm1.0
AMP-SMD MODULE RCHANNEL Vm1.4
PCB-5:AMP-SMD-R Vm1.0
17
P/N: 01-32520-02
P/N: 01-32520-01
www.hifiengine.com

Q1
4Q2 5Q3 6Q4 7Q5
14 Q6 13 Q7 12 Q8 11 QS
9QS
10
STR 1
D2
CLK 3
OE 15
VCC 16
VEE 8
IC74
4094
Q1
4Q2 5Q3 6Q4 7Q5
14 Q6 13 Q7 12 Q8 11 QS
9QS
10
STR 1
D2
CLK 3
OE 15
VCC 16
VEE 8
IC75
4094
C79
27p C710 27p
Y71
11.0592MHz
C77
10n
C78
0.1u
+5V
C711
0.1u 20%
C VI TU TA2 TA1 DI
S71
AUX
S72
TUNER
S74
TAPE1
S73
VIDEO
S75
DISC
S77
CD
S76
TAPE2
D71
AUX D72 TUNER
D73
VIDEO D74 TAPE1
D76
TAPE2 D75 DISC
D77
CD
R726
2K2
SOFT CLIPING
D716
GREEN
R725
2K2
Q716
C1815 R733 5K1
C71
100u/16V
1
2
3
4
5
6
7
8
9
CZ71
1
2
3
4
5
6
7
8
9
10
CZ76
R730
15K
Q72
C1815
R72
470
R71
330 Q79
C1815 Q710 C1815 Q711 C1815 Q712 C1815 Q713 C1815 Q714 C1815 Q715 C1815
R741
4K7 R742 4K7 R743 4K7 R744 4K7 R745 4K7 R746 4K7 R747 4K7
C714
10n C715 10n C716 10n C717 10n C718 10n C719 10n C720 10n
C AU TU TA2 TA1 DI
VIDEO AUX TAPE2 TUNER DISC TAPE1CD
VIDEO
AUX
TAPE2
TUNER
DISC
TAPE1
CD
R754
4K7
R753
4K7
R752
4K7
R751
4K7
R750
4K7
R749
4K7
R748
4K7
KEY BOARD Vm1.2
R756
10K
R757
10K
R758
10K
+5V
AMBER
REMOTE MUTE
PROTECTION
+5V
VOL-
VOL+
+12V
+5V
+5V
REMOTE MUTE PROTECTION VOL+ VOL- SOFT CLIPING +12V +5V
TO CB31
TO CB34
MUTING BLINK
GREEN
GREEN
GREENGREEN GREEN GREEN
+5V
Q74
C1815
R701
2K2
Q73
C1815
+12V
Q717
2SC1815
R703
2K2
R702
10K
NC
1NC
2NC
3Vss
4SDA 5
SCL 6
NC 7
Vcc 8
IC71
24C01
IR IN
IR OUT
IR IN IR OUT
C72
0.1uF
+12V
R708
10K
C722
N.I.
D710
1N4148
D711
1N4148
D713
1N4148
D712
1N4148
+5V
+5V
R73 10K
C712
0.1u 20%
D715
1N4148
1
2
3
CB72
CON3
+5V
D718
1N4148
+5V
+5V
IR BLINK
R759
2k2
Q718
C1815
R760
4k7
1 2 3 4
CB74
TO MAIN BOARD CB35
IP
R761
4K7
C721
10nF
IP
+12V
P22
P20
P21
P00
P01
P02
IPOD
R727
2K2
C723
100uF/16V
D714
1N4148
RST/VPP
1P3.0(RXD)
2P3.1(TXD)
3XTAL2
4XTAL1
5P3.2(INTO)
6P3.3(INT1)
7P3.4
8P3.5
9GND
10 P3.7 11
(AIN0)P1.0 12
(AIN1)P1.1 13
P1.2 14
P1.2 15
P1.4 16
P1.5 17
P1.6 18
P1.7 19
VCC 20
IC73
AT89C4051
1 3
2
IC76
TCM810MENB
R762
10K
VI AU
R763
10K
C724
N.I. C725 N.I.
R764
10K
PHONE71
Ipod IN
12345
CB73
2
31
IC72
IS1U60L
1 2 3
CZ75
IR RECEIVER
G
1 2 3 4
CZ74
VCC
L
R
SIGNAL
GND
D719 Ipod GREEN
P9
C758
100p
SHIELDING
1
C759
100p
2
C325BEE IR BOARD Vm1.0
3 4
1 2
5
3
C760
0.1uF
D717 RED GREEN
POWER/PROTECTION IND.
513AW
S78 STANDBY
C325BEE STANDBY BOARD Vm1.0
CZ73
CZ76 TP701
R765
N.I.
R766
4.7K
SCHEMATICS DIAGRAM(4/4)
PCB-11:IR BOARD Vm1.0
PCB-8:STANDBY BOARD Vm1.0
PCB-3:KEY BOARD Vm1.0
IPOD BAORD Vm1.0
PCB-9:IPOD BOARD Vm1.0
18
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NAD C325BEE POWER CIR.
C51
10n/250V
D51
KBU8D
C52
10n/250V
D55
KBU8D
C517
15000uF/50V 10%
C518
15000uF/50V 10%
D531
TIC116D
D532
TIC116D
R558
1K
R563
22K
R561
100
R562
1K
R560
1K
R559
1K
R565
100
R564
22K
R531
0.05/3W 5% CE
R532
220
R534
2K2
R533
1M
R566
4K7
D513
1N4004
R544
22K
C523
3300u/50V
C524
2200u/50V
!!
F51F52 F54 F53
+46V
-46V
-37V
+37V
I-V
AC DET.
TRIG
10% 10%
F55
500mA/250V
6.3A/250V X4
1
2
3
4
5
6
7
CB51
CON7
8V
0V
1
2
3
4
5
6
7
CB53
D56
DB104
36.4V
36.4V
0V
28.5V
28.5V
WHITE
RED
Q519
A1015
Q520
C1815
Q59
A1015
Q510
A1015 Q517
A1015
Q518
C1815
1
2
CB54
R567
330K
+37v
-37v
~8V
0V
1
2
CB52
1
2
3
CB55
CON3
1
2
3
CB56
CON3
1
3
CB57
CON3
-46V
+46V
C53
4.7nF/400V
C54
0.47uF
1
2
CB58
RED
WHITE (For AH version)
AC POWER CORD
SW52
POWER SWITCH
1
2
3
CZ55
!
1
2
3
CZ56
CON3
T401
RED
GRY
BLK
ORG
VIO
!
1
2
3
4
5
6
7
CZ51
CON7
1
2
3
CZ57
CON3
Transformer
1
2
3
CB59
CON3
1
2
3
CZ59
CON3
1
1
2
2
AC outlet
SCHEMATICS DIAGRAM (3/4)
PCB-2:POWER BOARD Vm2.0
POWER CIRCUIT Vm1.2
19
www.hifiengine.com

Q116
PCB-1: MAIN BOARD Vm2.0
C345J110 C339
C341
C122 C121
RT32RT34
J118
RT31
R364 C328
C335 R319
R320 R324
C336
J113
(GND)
R322
R326
J114
J116
J115
(GND)
J111
J112
J117
R363
R361 C333
C331 J104
R362 R329
R328
SW31
R327 R325
C330
C329
C327
R323
R321
J121
C332
C334
R158 R157
R161
R156
R160
J107
J108
R332 R330 R331
J109
VR304
J105
IC41
VR303
J106
J120
C127
H5
R142 R125 R139 R137 R127 R133 R131
J119
R439
TP7
J124
J123
J122
R165 R164 R264R267
C222
(GND)
J135
C429
R146J168(GND)
J145
J146
J125
Q115
(-46V)
WHITE
P3-R
Q114
RED
(+46V)
P4-R
C115
TP4
J126
C114
R145
R144
TP9
(+46V)
J142
J143
TP3
(GND)
J144
TP8
TP6
P5-GND
J147
Q21
J151
C113
Q113
Q111
R107
J127
J133
J134
J148
(GND)
(R-OUT)
VR12
R124
J141 J140
R138
R129 J152
J128
D12C111
J130
J129
R136
R128
D11
C110
C16
C15
J131
J132
J206
R14 R11
CB11
C11 C17
R15 R12J138
J137
J136
(GND)
D410 R148 R152 D17
C415
R420
J156
Q47
J158 J157
C416
J205
R418 R419
R421
Q48
J154
Q46
Q45
Q117 R162
J159
Q217
D411 D102 D103 R168 C123
R167
Q118 R262
Q218
R163 R263
D101 D201
IC11 IC21 R166 R266
C112
Q112
H6
H4
R132 R126 R130
Q110
R108
R143 R147J149
J163
J162 J161
J150 J160
C120
Q11
C220
C211
C26
J183
R24
C25
J185
C21 C27
R25
J169
J170
(DGND)
C212
Q212
Q210 J172
J171
J173
R224
J188
J189
J190
(L-OUT)
(GND)
R208 R243 R236
R228
R247
R232 R231 R226
J174 D21
J175
C210
VR22
J187
J186
D27
R248 R252
R424
J155
R422 R416
R417
J202
J176 J184
J177
CB21
R423
R425
R21
D202 J178
D203
R22
J179
R268 C223J180
R258 R257 R256
J201
R261 R260
IC42
J196
C227
Q216
J197
C213
J199
H7
J198
D22
R207
R238
R229
Q213
Q211 J200
R242 R225
R239
R237
R233
R227
R230
P1-L
Q215
J164
Q214
P2-L
(+46V)
(-46V)
RED
WHITE
J166
TP1
C215
C214
J165
J167
R246
R244
R245
J191
R467
J192
TP2
TP5
J193
J195(DGND)
C301
Q12/1
C346
J98
J99
(-18V)
PRE OUT L
(+18V)
J100
J97
(MAIN IN R)
(+18V)
J95
J139
J96 J94
(-18V)
(PRE OUT R)
CB33
J102J101
J103
J93
J92
C342
R385
VR301
R383
C337
R387
C349
C338 C340
R384 R386 VR302 R388
C350
(PRE IN L)
J91
J90
(PRE IN R)
C410
J83
(GND)
J81
C412
C44
J67
J68
C43
C411
J153
J85
(GND)
J207
J79
J84
J86
(-18V)
(GND)
J80
J82
(GND)
Q401
R402
C417
R403 R405 R404
R406
Q402
C48
C303
R407
C414
Q403
C418
C302
J89
RT33
H2
Q404
R412
R414
Q42
R401
R427 R495 Q422 Q423 R494 C446
R429
R428
Q414
Q413
C443
H1
R42
J87
R46 R44
C46 Q44
R48
R41
J66
R45
R43
R410 R49
C45
Q43
R47
J88
D403
Q41
D49
J204
C431
C425
J49
C434
C428
R442
C47
J56
C413
D42 Q412
R411
R413
C420
J57
C421
J53
IC44
R12/1
R12/2
J65
C41 J62
J58 H3
C432J59
C422
R435
R489
J52
J51
C419
J63
J60
J61
J64
R451
R457J50
R471 R470
R448
R482 R478 R493
(DGND)
J43
SOFT CLIPPING
PROTECT
STANDBY
CB34
VOL+
Ipod
VOL-
+5V
MUTE
J203
C12/1 J48
(+18V)
Q421
R443
D423
R440
D428
R468
R469
R474
J42
D418
R436
Q411
J46
VR3
J41
D417
J40
R476
(GND)
R265
(+18V)
J78
J77
J181
J182
(GND)
(+18V)
J76(-18V)
C324
J73
(-18V)
C321
C325
J71
J69
J70(+18V)
J72
R391 R345
C319
C320
(-37V)
C49
R438
R437
D43
J55
J54(+37V)
R392
C326
C322
R346
R441
J44 J45
J74
J47
C430
C426
C323
C221
J75
BUS-BAR (PRE-GND)
CB32
NAD C325BEE MAIN BOARD Vm2.0
NAD ELECTRONICS
COPYRIGHT C 2006
RL36
J22
J23
J24
(PRE IN L)
(PRE IN R) J27
D313
RL37
D312D311 D310
RL35
J39
D39
RL34
C39
C37
C310
R39 R357
R358
R310
R37
R355
C38
C35 R38
R35
R356
RCA32
R353 R354
J28C316
C313
R339 R343
R316
R313
R338
J29C314
C311
C312
R342
R314 R311
R337
RCA33
R341
R312
R473
TP10
D38
R472
RL33
R477 R480 RL32
IC43
TP11
R479
D37
J32
RL31
D316
(GND)
J33(DGND)
CB31
J34(+12V)
RL39
QI1
AUX
DISC
VIDEO
CD
IR IN
TAPE2
TAPE1
TUNER
+12V
IR OUT
J36
J37(+5V)
J35
C305
C362 RI5
RI6
R396R395
PHONE1
CB35
RI2
RI1
J38 RI7
QI2
RI3 RI4
PHONE2
R2 C3
C36
C33 C34
C31
R36
R33 R351
R352
R34 R31
R349
RCA31
C32 C304
R350
R32
R393R394
C118
IC45
0VAC 8VAC
C445
C444
R452
-37
+37
AC DET I-V
TRIG
CB47
D430
R251 L21 J2
D412
R250
L-OUT
R453 R150
RL12/1
GND
S41
C119
J3
(DGND)
JDD JDK PL
GND
PR
CB45
SPKOUT
C218 J1
C219
L-OUT
R-OUT
L11
J31
J30
J5 R151 (GND)
J8
J11
J9
J14
J12
(GND)
J15
J16
(MAIN IN L)
(MAIN IN R)
D315
R335 R333
R334
J17
(PRE OUT L)
J18
J19 J21
(GND)
J20(PRE OUT R)
R336
(GND) D314
RL38
J25
R389 C343
Q31
J13
RCA35
C363
R347
Q32
R348
R390
C317
J26
C318
C344
C315
C364
R315
R317 R318
RCA34
J6
J7
R-OUT
J10 R488
R491
D420
R446
R445
D419
R490
J4
R487
R483
20
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