NAD CI-9060, CI-9120 Service manual

NAD

SERVICE MANUAL

CI 9060/9120

SIX CHANNEL AMPLIFIER

CI 9060/9120

SIX CHANNEL AMPLIFIER

TWELVE CHANNEL AMPLIFER

TWELVE CHANNEL AMPLIFER

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.

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.)

Specifications

Power Rating

85 Watts continuous average power into 6 Ohms at any frequency between 20Hz and 20kHz
with all channels driven at less than 0.03% THD.
86 Watts continuous average power into 4 Ohms at any frequency between 20Hz and 20kHz
with all channels driven at less than 0.03% THD.

IM Distortion (SMPTE)

80 Watts into 6 Ohms < 0.03 %
80 Watts into 4 Ohms < 0.03 %

IM Distortion (CCIF, Any Combination from 1kHz to 20kHz)

80 Watts into 6 Ohms < 0.03 %
80 Watts into 4 Ohms < 0.03 %

THD + Noise at 1 Watt into 6 Ohms

20Hz 0.03 %

1kHz 0.03 %
10kHz 0.03 %
20kHz 0.03 %

THD + Noise at 80 Watts into 6 Ohms

20Hz 0.03 %

1kHz 0.03 %
10kHz 0.03 %
20kHz 0.03 %

Frequency Response @ 1 Watt into 6 Ohms

10Hz to 20kHz + 0.5, -1.0dB

Power Bandwidth (-3dB) 5Hz to 45kHz
Gain 28dB

Amplifier Trimmer Adjustment Range 14 ± 2 dB

Damping Factor >30
Dynamic Headroom into 6 Ohms 1.6dB
OMC Activation < 3 Ohms across any speaker terminal
ATO Logic

SENSE Input Sensitivity >10mV rms

12V Trigger Input Voltage Range 10.0V to 20.0V DC, 100k Ohms

12V Trigger Output Current 25 ± 5mA, 470 Ohms

Input Impedance 25k Ohms
Input Sensitivity

80 Watt into 6 Ohms 1V rms

1 Watt into 6 Ohms 114mV rms

Damping Factor 20Hz to 20kHz >31

Rise Time

5kHz, 50V peak-to-peak square wave,

20% to 80% 4 µs

Power Consumption (Continuous, All Channels Driven)

Quiescent 84/168VA

Maximum 960/1920VA
80 Watts into 6 Ohms 744/1488VA
80 Watts into 4 Ohms 900/1800VA

GENERAL

Power (available in 240V) 120VAC/50-60Hz

Ambient Operating Temperature < 100 °F (40 °C)

Operating Temperature 68 °F (20 °C)

above ambient temperature

Ventilation Air Flow 150 cubic feet/minute maximum

Net Chassis Dimensions 17.2x5.3x17.8 inches (437x133x451 mm)

or 3 rack heights

Maximum Gross Dimensions 18.9x19.0x5.7 inches (480.1x481.7x144.8 mm)

(includes rack mounting hardware,

feet and speaker terminals)
Weight CI 9060, Packed 58 lb (26.4 Kg), 68 lb (31 Kg)
Weight CI 9120, Packed 80 lb (36.5 Kg), 90 lb (41 Kg)

CH1 or CH7

IN

1R14

10 (C Version)

3.3 (AH Version)

CH1 or CH7

OUT

CH2 or CH8

IN

1R23

10 (C Version)

3.3 (AH Version)

CH2 or CH8

OUT

CH3 OR CH9

IN

1R26

10 (C Version)

3.3 (AH Version)

CH3 or CH9

OUT

CH4 or CH10

IN

1R29

10 (C Version)

3.3 (AH Version)

CH4 or CH10

OUT

CH5 or CH11

IN

1R32

10 (C Version)

3.3 (AH Version)

CH5 or CH11

OUT

1RCA1*
RCA JACK

1

1R4*1 (C Version)

2

1RCA2
RCA JACK

1

2

1RCA3*
RCA JACK

1

1R8*

2

1RCA4
RCA JACK

1

2

1RCA5
RCA JACK

1

2

1RCA6
RCA JACK

1

2

1RCA7
RCA JACK

1

2

1RCA8
RCA JACK

1

2

1RCA9
RCA JACK

1

2

1RCA10
RCA JACK

1

2

1RCA11
RCA JACK

1

2

1RCA12
RCA JACK

1

2

1RCA13
RCA JACK

1

2

1RCA14
RCA JACK

1

2

1RCA15
RCA JACK

1

2

L-IN

R-IN

1 (C Version)

1R11

75.0

1

1C27

IN1

10uF

1RV1
20K

1C28

IN2

10uF

1RV2
20K

1C32

IN3

10uF

1RV3
20K

1C29

IN4

10uF

1RV4
20K

1C30

IN5

10uF

1RV5
20K

1R1
100K

3.3 (AH Version)

1R5
100K

3.3 (AH Version)

1R10
100K

-15VA

OPA2134

U2A

+15VA

8 4

31

CW

1R16

4.99K

31

CW

1R24

4.99K

31

CW

1R27

4.99K

31

CW

1R30

4.99K

31

CW

1R33

4.99K

1R2

100K

-15V

2

3

6

5

1R9
100K

1R12

2

100K

3

+15V

1C21

2

33uF

1R65
47k

+15V

1C22
33uF

2

1R66
47k

+15V

1C23

2

33uF

1R67
47k

+15V

1C24

2

33uF

1R68
47k

+15V

1C25

2

33uF

1R69
47k

U1A

8 4

U1B

1R41
220

1R43
220

1C18
470p

1R45
220

1R47
220

1R49
220

1C14
470p

1C19
470p

1C15
470P

1C16
470p

OPA2134

+15V

1R3

75.0
1R6

100K

OPA2134

1R7

75.0

1R40

220

1R42

220

1R44

220

1R46

220

1R48

220

1

FlexPad

7

NOTE:
Six RCA Jumpers are provided for each
FlexPad that is installed in a chassis. For
Mono operation, an RCA Jumper is
installed
on the rear panel from J5 to J6, another
from
J7 to J8, another from J9 to J10, another

L-IN

from J11 to J12, another from J13 to J14,
and the last from J15 to J16. J17 is not
needed, and omitting it prevents the user
from continuing the daisy-chain onto the

R-IN

second FlexPad, if installed.

Components with the " * " mark are not
inserted in CI9120's second Flexpad.

1Q1

2SC1815GR
1R52
100

1R18

4.99K

+

1 2

-15V

1Q2

2SC1815GR
1R53
100

1R25

4.99K

+

1 2

-15V

1Q3

2SC1815GR
1R54
100

1R28

4.99K

+

1 2

-15V

1Q4

2SC1815GR
1R55
100

1R31

4.99K

+

1 2

-15V

1Q5

2SC1815GR
1R56
100

1R34

4.99K

+

1 2

-15V

1R58
100

1C1

4.7uF 10V

AmpInput1

1R59
100

1C3

4.7uF 10V

AmpInput2

1R60
100

1C4

4.7uF 10V

AmpInput3

1R61
100

1C5

4.7uF 10V

AmpInput4

1R62
100

1C6

4.7uF 10V

AmpInput5

C 2000 NAD Electronics International, a division of Lenbrook Industries Limited

C 2000 NAD Electronics International, a division of Lenbrook Industries Limited

IN1

IN2

IN3

IN4

IN5

IN6

2SC1815GR

1RCA16
RCA JACK

1R35

1

IN6

1C31
10uF

2

1RV6

CH6 or CH12

IN

1 (C Version)

3.3 (AH Version)

FlexPad

ATO Logic

1R13

220K

1R15

220K

1R17

220K

1R19

220K

1R20

220K

1R21

220K

+15V

+15VA

1C11

1C10

0.1uF

0.1uF

1C12

1C13

0.1uF

0.1uF

-15V

-15VA

TEXT

ECB

31

CW

1C26

2

20K

33uF

1R36

4.99K

1C9

33uF

OUT A

-IN A

+IN A

1R70
47k

V-

1R51
220

TM

TM

1D1

1D2

1N4148

+

1

2

3

4

1D3

1N4148

5

6

+15V

1D5
1N4148

1C33

0.1uF

1R64
10/1W

OPA2134

1R57
100

1C17
470p

1C2
10pF

U2B

1D6
1N4148

1R22
30M

OPA2134

1R50
220

1D4

1N4148

8

7

6

5

-15V

7

OUT B

-IN B

+IN B

V+

Note:
IN CI9060, 1P5 IS
NOT INSERT

1Q6
2SC1815GR

1R37

4.99K

1N4148

12

1D7*
1N4148

1R63
100

Sleep/Wake

1R38
10K

+15VA

1C8

0.1uF

1Q7*
2SC1815GR

1R39*
1M

INPUT-SENCE

AmpInput1
AmpInput2
AmpInput3

AmpInput4
AmpInput5
AmpInput6

INPUT-SENCE

In Sence

INPUT-SENCE

1C7

4.7uF 10V

12

AmpInput6

+

-15VA
+15VA

-15V
+15V

In Sence

1C20*

0.1uF

R-IN
L-IN

1P1

6PIN

1P2

6PIN

1P3*

2PIN

1P4

7PIN

1P5

4PIN

6
5
4

To 1st or

3

3rd Amp

2

Module

1

2P3

6
5
4

To 2nd or

3

4th Amp

2

Module

1

2P3

2

To a Trigger

1

Board 9P4

7

To Mather

6

Board 4P7

5

or Slave

4

Mather

3

board 5P7
2
1

1

To Another
2

Flex-pad
3

Board 1P5
4