NAD T 748 User manual

LAUNAMECIVRES
AV Surround Sound Receiver
T748
AV Surround Sound Receiver
T748

PRODUCT SAFETY SERVICING GUIDELINES 1-3
* General Servicing Precautions
* Insulation checking prodedure
* Electrostatically Sensitive Devices
W
SECTION 1
SUMMARY
CONTENTS
SERVICING PRECAUTIONS 1-4
SPECIFICATIONS 1-5
DISASSEMBLY 1-6
PRINCIPAL PART LOCATION 1-7
EXPLODED VIE 1-8
.........................................................................................
.......................................................................................................................
.........................................................................................................................................
..............................................................................................................................................
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1-2

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.
1-3

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.)
1-4

Amplifier Section FM Tuner Section
(Without notes 100.1MHz, 60dB)
Output Power(Front):
egnaRgninuT:noitaRC.T.F
tszHK05:CzHM0.801-zHM5.78,muminimlennahcrepSMRsttaw08 eps
petszHK001:HAmorfsmho8otninevirdslennahchtob s
20Hz to 20KHz with no more than 0.08%
Bd54:C:oitaRnoisserppuSMAnoitrotsidcinomrahlatot
AH : 45 dB
Surround Output Power (0.08% THD, 1KHz, 8 ohms):
:)zHK1(noitrotsiDcinomraHlatoT)tnorF(ttaW54+54
%8.0:onoM)retneC(ttaW54
%0.1:oeretS)rruS(ttaW54+54
45 + 45 Watt (Back Surr)
Freqency Response : 50Hz - 13KHz, +3/-3dB
Total Harmonic Distortion (Front):
Bd03:C:)zHK1(noitarapeSoeretS)zHK1,sttaW54ta(%80.0
Bd03:HA
Audio input Sensitivity/Impedance :
:oitaResioN-ot-langiSsmhoK74/Vm052:eniL*
Mono : 60dB
Output Level / Impedance
* REC : 250 mV/2.2Kohms AM Tuner Section
:egnaRgninuT:esnopseRycneqerF
)spetszHK9(zHK0261-zHK225:CBd3-/3+,zHK001-zH02:eniL*
AH:520KHz-1710KHz(10KHz steps)
Signal-to-Noise Radio : 1 Watt
Bd55:ytivitisneSelbasU)A-FHI(Bd58:eniL*
Total Harmonic Distortion : 1.0%
Bd53:oitaResioN-ot-langiSlortnoCenoT
BASS : +/- dB at 100Hz
TREBLE : +/- dB at 10KHz General
Power Requirements :
Digital audio Section C : AC230V, 50Hz
zH06,V021CA:HA:ycneqerFgnielpmaS
32KHz, 44.1KHz, 48KHz, 96KHz, 192KHz Power Consumption : C : 2.0A
AH : 4.5A
latoT,1xdehtiwsnu:steltuOCAecnadepmI/leveLtupnIlatigiD 100W max.(1A)
3x761x534:)DxHxW(snoisnemiDsmho57/p-pV5.0:laixaoC 97
gK5.11:)ten(thgieWmBd12-~mBd51-:lacitpO
Video Section
Input Level/Impedance : 1.0Vp-p/75ohms
Output Level/Impedance : 1.0Vp-p/75ohms
*Linemeans Source 1~4, Front, MP
* Improvements may result in specifications and features
changing without notice
* Illustrations may differ slightly from production models.
1-5
SPECIFICATIONS
Factory Reset
The select AM mode, then press/hold
“listening mode” button.

DISASSEMBLY
REMOVAL OF FRONT PANEL
1-6

PRINCIPAL PART LOCATION
1-7

1-8
T748AH EXPLODED VIEW PARTS LIST
10 CABINET,TOP CKC1A188B22
FRONT PCB ASS'Y
23
27
24
25
26
17
18
19
20
22
21
11
12
13
14
16
15
PANEL,REAR
BRACKET
RUBBER,FOOT
FOOT
COP12370B
CHG1A297
CKL1A086
CKF2A445ZK1
CMD1A674
BRACKET
8
9
5
4
3
7
6
FUNCTION KNOB ASS'Y
COVER,JACK
PANEL,AL
POWER KNOB ASS'Y
NO
2
1
VOLUME KNOB ASS'Y
DESCRIPTION
CKM1A208XC64
CBT1A1103ZA
CGK2A126ZA
CMD2A563
CGR1A476B29
CGK1A145ZA
PARTS NO
1
1
1
1
4
4
11
1
2
1
1
1
1
Q,ty
1
27-1 COP12370-1
28 MAIN PCB ASS'Y COP12372B 1
1
1
1
1
INPUT PCB ASS'Y
29 COP12371C 1
WINDOW ,FIP CGU1A434Z 1
1
1
CGW2A475RBB29PANEL,FRONT 1
REMARK
1
KNOB,SOURCE CBT1A1104B29 2
1
CHASSIS ,BOTTOM CUA1A327 1
SUPPORT,PCB 31 CRE1A073 1
HEAT SINK CMY1A369
BRACKET,PCB CMD1A734 2
BRACKET , FAN CMD1A694
KNOB,VOLUME CBN1A216
CAP,VOLUME CGK1A145C64
KNOB,POWER CBT1A1103B29 1
INDICATOR,POWER CGL1A280Z 1
CAP,FUNCTION CGK1A126C64
KNOB,FUNCTION CBT1A1102B29
HDMI PCB ASS'Y 1COP12374C
S1
S5
S4
S3
NO
54
CTB3+8JFZRSCREW
SCREW
SCREW CTB4+6FFZR
CHD1A012R
CTW3+12JR
14
4
6
DESCRIPTION PARTS NO. Q,ty
SCREW CTWS3+10GR 2
S6
CHD3A012R 8
S7
SCREW,SPECIAL CHD1A036R 4
S8
SCREW,TRANS CHD1A023R 4
S9
S10
S11 13
CTB3+6FFZRSCREW
1
FAN,MOTOT(60*60*25) 1
FAN,MOTOR(80*80*25) 1CFNRDH8025S
CFNRDM6025S
CWZPM5003TW91A2P WIRE ASS'Y
1
1
1
11
11
11
1
1
COP12370-2
COP12370-3
COP12370-4
COP12370-5
COP12370-6
COP12370-7
HOLDER , PCB CHE170 4
BRACKET , FAN CMD1A506 1
TRANS,POWER 1
1
SCREW,SPECIAL CHD1A036FZR 2
SCREW,SPECIAL
SCREW,SPECIAL
S12 1
CTW3+8JRSCREW
28-1
28-2
1COP12370-8
COP12372-1
COP12372-2
SUB PCB ASS'Y
31 COP12373C 1
31-1
31-2
31-3
COP12373-1
1
1
1
31-4 1
COP12373-2
COP12373-3
COP12373-4
30
1
1
29-1
29-2
COP12371-1
COP12371-2
1
1
CLT5V061ZU
27-2
27-3
27-4
27-5
27-6
27-7
27-8

1-9 1-10
S1
S1
S1
S1
S1
S3
S1
S1
S5
S3
S1
S3
S1
S1
S4
S4
S1
S10
S11
S11
S11
S11
S1
S11
S8
S12
S1
S6
S1
S7
S11
S1 S1
S1
X5
S5
S1
S1
S1
S9
S12
S1
S1
3
1
2
5
4
6
7
8
6
9
18
19
27-1
27-5
27-2
27-4
27-3
9
16
17
10
25
13
12
11
15
20
21
23
24
22
14
27-7
27-8
27-6
28-1
28-2
29-1
30
31-1
31-2
31-3
31-4
29-2
T748AH EXPLODED VIEW

1-11
T748C EXPLODED VIEW PARTS LIST
10 CABINET,TOP CKC1A188B22/G39
FRONT PCB ASS'Y
23
27
24
25
26
17
18
19
20
22
21
11
12
13
14
16
15
PANEL,REAR
BRACKET
RUBBER,FOOT
FOOT
COP12370B
CHG1A297
CKL1A086
CKF1A445ZK1
CMD1A674
BRACKET
8
9
5
4
3
7
6
FUNCTION KNOB ASS'Y
COVER,JACK
PANEL,AL
POWER KNOB ASS'Y
NO
2
1
VOLUME KNOB ASS'Y
DESCRIPTION
CKM1A208XC64
CBT1A1103ZA
CGK2A126ZA
CMD2A563
CGR1A476B29
CGK1A145ZA
PARTS NO
1
1
1
1
4
4
11
1
2
1
1
1
1
Q,ty
1
27-1 COP12370-1
28 MAIN PCB ASS'Y COP12372B 1
1
1
1
1
INPUT PCB ASS'Y
29 COP12371B 1
WINDOW ,FIP CGU1A434Z 1
1
1
CGW2A475RBB29PANEL,FRONT 1
REMARK
1
1
KNOB,SOURCE CBT1A1104B29 2
1
CHASSIS ,BOTTOM CUA1A327 1
SUPPORT,PCB 31 CRE1A073 1
HEAT SINK CMY1A369
BRACKET,PCB CMD1A734 2
BRACKET , FAN CMD1A694
KNOB,VOLUME CBN1A216
CAP,VOLUME CGK1A145C64
KNOB,POWER CBT1A1103B29 1
INDICATOR,POWER CGL1A280Z 1
CAP,FUNCTION CGK1A126C64
KNOB,FUNCTION CBT1A1102B29
HDMI PCB ASS'Y 1COP12374B
S1
S5
S4
S2
S3
NO
54
CTB3+8JFZRSCREW
SCREW
SCREW CTB4+6FFZR
CHD1A012R
CTW3+12JR
14
4
6
DESCRIPTION PARTS NO. Q,ty
SCREW CTWS3+10GR 2
S6
CHD3A012R 8
S7
SCREW,SPECIAL CHD1A036R 4
S8
SCREW,TRANS CHD1A023R 4
S9
S10
S11 13
CTB3+6FFZRSCREW
1
FAN,MOTOT(60*60*25) 1
FAN,MOTOR(80*80*25) 1CFNRDH8025S
CFNRDM6025S
CWZPM5003TW91A2P WIRE ASS'Y
1
1
1
11
11
11
1
1
HOLDER , PCB CHE170 4
BRACKET , FAN CMD1A506 1
TRANS,POWER 1
1
CTB3+8JFC
SCREW,SPECIAL CHD1A036FZR 2
SCREW,SPECIAL
SCREW,SPECIAL
10
S12 1
CTW3+8JRSCREW
28-1
28-2
1
COP12372-1
COP12372-2
SUB PCB ASS'Y
31 COP12373B 1
31-1
31-2
31-3
COP12373-1
1
1
1
31-4 1
COP12373-2
COP12373-3
COP12373-4
30
1
1
27-2
27-3
27-4
27-5
27-6
27-7
27-8
COP12370-2
COP12370-3
COP12370-4
COP12370-5
COP12370-6
COP12370-7
COP12370-8
29-1 COP12371-1 1
29-2 COP12371-2 1
CLT5V061ZE
SCREW

1-12 1-13
S1
S1
S1
S1
S1
S3
S1
S1
S5
S3
S1
S3
S1
S1
S4
S4
S1
S10
S11
S11
S11
S11
S1
S11
S8
S12
S1
S6
S1
S7
S11
S1 S1
S1
S2
S2
X5
S5
S1
S1
S1
S9
S12
S1
S1
3
1
2
5
4
6
7
8
6
9
18
19
27-1
27-5
27-2
27-4
27-3
9
16
17
10
25
13
12
11
15
20
21
23
24
22
14
27-7
27-8
27-6
28-1
28-2
29-1
30
31-1
31-2
31-3
31-4
29-2
T748C EXPLODED VIEW

1-14
T748CT EXPLODED VIEW PARTS LIST
10 CABINET,TOP CKC1A188B22/G39
FRONT PCB ASS'Y
23
27
24
25
26
17
18
19
20
22
21
11
12
13
14
16
15
PANEL,REAR
BRACKET
RUBBER,FOOT
FOOT
COP12370B
CHG1A297
CKL1A086
CKF1A445ZK1
CMD1A674
BRACKET
8
9
5
4
3
7
6
FUNCTION KNOB ASS'Y
COVER,JACK
PANEL,AL
POWER KNOB ASS'Y
NO
2
1
VOLUME KNOB ASS'Y
DESCRIPTION
CKM1A208XC37
CBT1A1103YA
CGK2A126YA
CMD2A563
CGR1A476G38
CGK1A145YA
PARTS NO
1
1
1
1
4
4
11
1
2
1
1
1
1
Q,ty
1
27-1 COP12370-1
28 MAIN PCB ASS'Y COP12372B 1
1
1
1
1
INPUT PCB ASS'Y
29 COP12371B 1
WINDOW ,FIP CGU1A434Z 1
1
1
CGW2A475RBG38PANEL,FRONT 1
REMARK
1
1
KNOB,SOURCE CBT1A1104G38 2
1
CHASSIS ,BOTTOM CUA1A327 1
SUPPORT,PCB 31 CRE1A073 1
HEAT SINK CMY1A369
BRACKET,PCB CMD1A734 2
BRACKET , FAN CMD1A694
KNOB,VOLUME CBN1A216
CAP,VOLUME CGK1A145C37
KNOB,POWER CBT1A1103G38 1
INDICATOR,POWER CGL1A280Y 1
CAP,FUNCTION CGK1A126C37
KNOB,FUNCTION CBT1A1102G38
HDMI PCB ASS'Y 1COP12374B
S1
S5
S4
S2
S3
NO
CTB3+8JFZRSCREW
SCREW
SCREW
CHD1A012R
CTW3+12JR
14
4
DESCRIPTION PARTS NO. Q,ty
SCREW CTWS3+10GR 2
S6
CHD3A012R 8
S7
SCREW,SPECIAL CHD1A036R 4
S8
SCREW,TRANS CHD1A023R 4
S9
S10
S11 13
CTB3+6FFZRSCREW
1
FAN,MOTOT(60*60*25) 1
FAN,MOTOR(80*80*25) 1CFNRDH8025S
CFNRDM6025S
CWZPM5003TW91A2P WIRE ASS'Y
1
1
1
11
11
11
1
1
HOLDER , PCB CHE170 4
BRACKET , FAN CMD1A506 1
TRANS,POWER 1
1
CTB3+8JFC
SCREW,SPECIAL CHD1A036FZR 2
SCREW,SPECIAL
SCREW,SPECIAL
44
10
CTB4+6FC 6
S12 1
CTW3+8JRSCREW
28-1
28-2
1
COP12372-1
COP12372-2
SUB PCB ASS'Y
31 COP12373B 1
31-1
31-2
31-3
COP12373-1
1
1
1
31-4 1
COP12373-2
COP12373-3
COP12373-4
30
1
1
27-2
27-3
27-4
27-5
27-6
27-7
27-8
COP12370-2
COP12370-3
COP12370-4
COP12370-5
COP12370-6
COP12370-7
COP12370-8
29-1 COP12371-1 1
29-2 COP12371-2 1
CLT5V061ZE
SCREW

1-15 1-16
S1
S1
S1
S1
S1
S3
S1
S1
S5
S3
S1
S3
S1
S1
S4
S4
S1
S10
S11
S11
S11
S11
S1
S11
S8
S12
S1
S6
S1
S7
S11
S1 S1
S1
S2
S2
X5
S5
S1
S1
S1
S9
S12
S1
S1
3
1
2
5
4
6
7
8
6
9
18
19
27-1
27-5
27-2
27-4
27-3
9
16
17
10
25
13
12
11
15
20
21
23
24
22
14
27-7
27-8
27-6
28-1
28-2
29-1
30
31-1
31-2
31-3
31-4
29-2
T748CT EXPLODED VIEW

PA[15:0]
EXT.IT
112AF
AHB2
2x(8x16bit)
WKUP
Fmax: 48/72 MHz
VSS
I2C2
GP DMA1
TIM2
TIM3
XTAL32kHz
Flash 512 Kbytes
VDD
Backup interface
TIM4
Bus Matrix
64 bit
RTC
RC 8 MHz
Cortex-M3 CPU
Dbus
obl
Flash interface
USART2
SPI2/ I2 S2
Backup
reg
TIM1
I2C1
RX, TX, CTS,RTS,
USART3
RC 40 kHz
St an d b y
IWDG
@VBAT
POR /PDR
@VDDA
VBAT =1.8 V to 3.6 V
CK as AF
RX, TX, CTS, RTS,
CK as AF
NVIC
SPI1
interface
@V
DDA PVD
Int
APB2
AWU
TIM8
2x(8x16bit)
SPI3 / I2S3
UART4
RX,TX asAF
UART5
RX,TX as AF
TIM5
PLL
@VDDA
FSMC
DAC_OUT1 as AF
DAC_OUT2 as AF
SRAM
64 KB
GP DMA2
TIM6
TIM7
NJTRST
JTDI
JTCK/SWCLK
JTMS/SWDIO
JTDO
as AF
A[25:0]
D[15:0]
CLK
NOE
NWE
NE[4:1]
NBL[1:0]
NWAIT
NL (or NADV)
as AF
7 channels
5 channels
GPIO port A
GPIO port B
GPIO port C
GPIO port D
GPIO port E
GPIO port F
GPIO port G
USART1
Temp. sensor
12-bit ADC1
12-bit ADC2
12-bit ADC3
IF
IF
IF
PB[15:0]
PC[15:0]
PD[15:0]
PE[15:0]
PF[15:0]
PG[15:0]
4 channels
3 compl. channels
BKIN, ETR as AF
4 channels
3 compl. channels
BKIN, ETR as AF
MOSI, MISO,
SCK, NSS as AF
RX, TX, CTS,
RTS, CK as AF
8 ADC123_INs
common to the 3 ADCs
8 ADC12_INs common
to ADC1 & ADC2
5 ADC3_INs on ADC3
VREF+
VREF– @ VDDA
APB2: Fmax = 48/72 MHz
APB1
Trace
controller
Pbus
Ibus
System
Reset &
Clock
control
PCLK1
PCLK2
HCLK
FCLK
Power
Volt. reg.
3.3 V to 1.8 V
Supply
supervision
@VDD
POR
Reset
NRST
VDDA
VSSA
OSC_IN
OSC_OUT
@VDD
XTAL OSC
4-16 MHz
OSC32_IN
OSC32_OUT
TAMPER-RTC/
ALARM/SECOND OUT
4 channels, ETR as AF
4 channels, ETR as AF
4 channels, ETR as AF
4 channels as AF
MOSI/SD, MISO
SCK/CK, MCK, NSS/WS as AF
MOSI/SD, MISO
SCK/CK, MCK, NSS/WS as AF
SCL, SDA, SMBA as AF
SCL, SDA, SMBA as AF
bxCAN device
USB 2.0 FS
device
USBDP/CAN_TX
USBDM/CAN_RX
SRAM 512 B
WWDG
ai14666f
APB1: Fmax = 24/36 MHz
TRACECLK
TRACED[0:3]
as AS
SW/JTAG
TPIU
Trace/trig
SDIO
D[7:0]
CMD
CK as AF
AHB: Fmax = 48/72 MHz
AHB2
12bit DAC1
IFIF
IF
12bit DAC 2
IC BLOCK DIAGRAMS & PIN DESCRIPTION
IC101 : STM32F103ZET6 (FLASH MCU)
IC BLOCK DIAGRAMS
2-2

VDD_3 VSS_3 PE1 PE0 PB9 PB8 BOOT0 PB7 PB6 PB5 PB4 PB3 PG15 VDD_11 VSS_11 PG14 PG13 PG12 PG11 PG10 PG9 PD7 PD6 VDD_10 VSS_10 PD5 PD4 PD3 PD2 PD1 PD0 PC12 PC11 PC10 PA15 PA14
PE2 VDD_2
PE3 VSS_2
PE4 NC
PE5 PA13
PE6 PA12
VBAT PA11
PC13-TAMPER-RTC PA10
PC14-OSC32_IN PA9
PC15-OSC32_OUT PA8
PF0 PC9
PF1 PC8
PF2 PC7
PF3 PC6
PF4 VDD_9
PF5 VSS_9
VSS_5 PG8
VDD_5 PG7
PF6 PG6
PF7 PG5
PF8 PG4
PF9 PG3
PF10 PG2
OSC_IN PD15
OSC_OUT PD14
NRST VDD_8
PC0 VSS_8
PC1 PD13
PC2 PD12
PC3 PD11
VSSA PD10
VREF- PD9
VREF+ PD8
VDDA PB15
PA0-WKUP PB14
PA1 PB13
PA2 PB12
PA3
VSS_4
VDD_4
PA4 PA5 PA6 PA7
PC4 PC5
PB0 PB1 PB2
PF11 PF12
VSS_6
VDD_6
PF13 PF14 PF15
PG0 PG1
PE7 PE8 PE9
VSS_7
VDD_7
PE10 PE11 PE12 PE13 PE14 PE15 PB10 PB11
VSS_1
VDD_1
144 143 142 141 140 139 138 137 136 135 134 133 132 131 130 129 128 127 126 125 124 123 122 121 109
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
108
107
106
105
104
103
102
101
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 72
LQFP144
120 119 118 117 116 115 114 113 112 111 110
61 62 63 64 65 66 67 68 69 70 71
26
27
28
29
30
31
32
33
34
35
36
83
82
81
80
79
78
77
76
75
74
73
ai14667
IC PIN DESCRIPTION
2-3

BLOCK DIAGRAM AND PIN CONFIGURATION (TOP VIEW)
AGND
SWC
AGND
SLC
AGND
SBLC
INLB/RECL2
INRB/RECR2
INR11/RECR5
INL10/RECL4
RECR3
INL11/RECL5
FLIN1
RECL3
CIN1
FRIN1
SLIN1
SWIN1
AVEE
MUTE
FLIN2 FRIN2
SLIN2
SRIN2
CIN2
SWIN2 SBLIN2
SBRIN2
AVCC
TREL
BASSL1
BASSL2
FLOUT
CC
FLC
FROUT
AGND
FRC
ADCR
SBLIN1
SRIN1
SBRIN1
SBL OUT
ADCL
SBR OUT
SLOUT
SBRC
SROUT
SWOUT
SRC
COUT
INL5
INL1
INR1
INL2
INR2
INL3
INR3
INL4
INR4
INR5
INL6
INR6
INL7
INR7
INL8
INR8
INLA/RECL1
INRA/RECR1
INL9
INR9
SUBR
SUBL
DGND
INR10/RECR4
DATA CLOCK
BASSR1
BASSR2 TRER
N.C.
AGND
N.C.
AGND
N.C.
N.C.
N.C. N.C. SBRCIN SBLCIN
N.C.
N.C.
AGND
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
MAIN
SUB
REC
ATT
0/-6/-12/-18dB
Bass/ Treble
-14~+14dB
(2dB step)
+42~-95dB,
-∞(0.5dBstep)
+42~-95dB,
-∞(0.5dBstep)
+42~-95dB,
-∞(0.5dBstep)
+42~-95dB,
-∞(0.5dBstep)
+42~-95dB,
-∞(0.5dBstep)
+42~-95dB,
-∞(0.5dBstep)
Tone
+42~0dB
(0.5dBstep)
Tone
Bass/ Treble
-14~+14dB
(2dB step)
0~-95dB,
-∞
(0.5dBstep)
+42~0dB
(0.5dBstep)
0~-95dB,
-∞
(0.5dBstep)
MCU
I/F
AVEE
AVCC
Bypass
Tone
Tone+MIX
Bypass
Tone
Tone+MIX
CMIX
SWMIX
MAIN
SUB
MAIN
SUB
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
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
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31
IC 301 : R2A15218FP (INPUT SELECTOR TONE CONTROL)
2-4

PIN DESCRIPTION
PIN No. Name Function
49 DATA Input pin of control data
50 CLOCK Input pin of control clock
Output pin of FL/FR/C/SW/SL/SR/SBL/SBR channel
FRIN2, FLIN2,
SRN2,SLIN2,
SWIN2,CIN2,
SBRIN2,SBLIN2
43,42,
41,40,
39,38,
37,36 Input pin of L/R/C/SW/SL/SR/SBL/SBR channel (Multi IN 1/2)
Output pin for L/R channel REC Output
Frequency characteristic setting pin of L/R channel tone control (Treble)
28,34 TREL, TRER
26,27,
32,33
23,21,
17,15,
11,9,
5,3
FROUT,FLOUT,
COUT,SWOUT,
SROUT, SLOUT,
SBROUT,SBLOUT
BASSL1,BASSL2
BASSR1,BASSR2
FLIN1, FRIN1,
CIN1,SWIN1,
SLIN1,SRIN1,
SBLIN1,SBRIN1
93,94,
95,96,
97,98,
99,100
Frequency characteristic setting pin of L/R channel tone control (Bass)
24,20,
18,14,
12,8,
6,2
FRC,FLC,
CC,SWC,
SRC,SLC,
SBRC,SBLC
Connects capacitor for reducing click noise of
L/R/C/SW/SL/SR/SBL/SBR channel volume
INL1,INL2, INL3,
INL4,INL5,INL6,
INL7,INL8,INL9 Input pin of L/R channel (Input Selector)
59,61,63,
65,67,69,
71,73,79
INR1,INR2, INR3,
INR4,INR5,INR6,
INR7,INR8,INR9
58,60,62,
64,66,68,
70,72,78
54,55 ADCL, ADCR Output pin for L/R channel ADC
90,91
4,7,10,16,
19,22,56 AGND Analog ground of internal circuit
30 AVCC Positive power supply to internal circuit
48 DGND Digital ground of internal circuit
52 AVEE Negative power supply to internal circuit
46,47 SUBL,SUBR Output pin for L/R channel SUB Output
RECR3,RECL3
51 MUTE Outside Mute Control PIN
75,76,
81,82,
83,84,
85,86
INRA/RECR1,INLA/RECL1,
INRB/RECR2,INLB/RECL2,
INR10/RECR4,INL10/RECL4,
INR11/RECR5,INL11/RECL5
Input pin of L/R channel (Input Selector)/
Output pin for L/R channel REC Output
N.C.
1,13,25,29,31,
35,53,
57,74,77,80,
87,88,89,92
No Connected PIN
44,45 SBRCIN,SBLCIN Input pin for SBL/SBR channel Volume
2-5

IC 211 : MX29LV32DTTI - 70G (FLASH OF DSP)
2-6

2-7

Device Block Diagram
Program/Data
RAM
256K Bytes
256
256
Program/Data
ROM Page1
256K Bytes
256
256
256K Bytes
ROM Page3
Program/Data
Program/Data
ROM Page2
256K Bytes
3232
DMPPMP
CSP 32
256
Program
Cache
32K Bytes
64
D1
Data
R/W
R/W
Data
D2
64
256
Program
Fetch
INTI/O
C67x+ CPU
Memory
Controller
32
High-Performance
Crossbar Switch 32
McASP DMA Bus
JTAG EMU
32
32
32
32
32
32
32
Peripheral Configuration Bus
EMIF
32
Events
In
32
MAX1MAX0
32
CONTROL
32
Interrupts
Out
I/O
dMAX
McASP0
16 Serializers
McASP1
6 Serializers
McASP2
2 Serializers
DIT Only
SPI1
SPI0
I2C1
I2C0
RTI32
PLL
Peripheral Interrupt and DMA Events
32
32
32
32
IC 201 : TMS320DA788B (AUDIO DSP)
2-8