Nad s170 av schematic

SERVICE MANUAL

S170

A/V SURROUND
SOUND

S170

A/V SURROUND

SOUND

PREAMPLIFIER

PREAMPLIFIER

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.)

CONTENTS

FRONT PANEL / REAR PANEL VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

PCB LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10

SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-25

ELECTRICAL PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26-35

EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

EXPLODED VIEW PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xx

PACKING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

SERVICE SAFETY PRECAUTIONS

1. Replacing the Fuses

CAUTION: FOR CONTINUED PROTECTION AGAINST THE RISK OF FIRE REPLACE ONLY

WITH SAME TYPE OF FUSE.

REFERENCE NO. PART NUMBER DESCRIPTION

FUSE1*C 1.6A 250V Time Lag
FUSE2*C 1A 250V Time Lag
FUSE3*C 2A 250V Time Lag

NOTE:

*C : European version only

!

!

!

5120-0050-0
5100-1020-1B
5120-0065-0

2. Safety-check out

Before returning the product to the customer, make leakage current or resistance measurements
to determine that exposed parts are acceptably insulated from the supply circuit.

Parts marked with the symbol are critical with regard to the risk of fire and electric shock.
Replace only with parts recommended by the manufacturer.

!

FRONT PANEL CONTROLS

14

NA

D

AUDIO MODESPEAKERS DELAYVIDEO

2 3 4 85 96 10

A/V Surround Sound Preamplifier S170

MULTI SOURCE BRIGHTNESSLEVELSTAPE MONITOR

7

TONE

11 12

VOLUME (SET UP)VOLUME (SET UP)

131

1. POWER SWITCH 6. MULTI SOURCE 11. TONE

2. POWER INDICATOR 7. SPEAKERS 12. MODE

3. AUDIO INPUT SELECTOR 8. DELAY 13. VOLUME/SETUP CONTROL

4. VIDEO INPUT SELECTOR 9. LEVELS 14. DISPLAY

5. TAPE MONITOR 10. BRIGHTNESS

The graphic symbol of a lightning flash with an arrow point
within a triangle signifies that there is dangerous voltage
within the unit and it posses a hazard to anyone removing
the cover to gain access to the interior of the unit. Only

qualified service personnel should make such attempt.

The graphic symbol of an exclamation point within
an equilateral triangle warns a user of the device
that it is necessary to refer to the instruction
manual and its warnings for proper operation of
the unit.

REAR PANEL CONNECTIONS

ININ

OUT

DIGITAL 2 DIGITAL 3

EXTERNAL 7.1 OUTPUTS

LEFT B (mono)LS

RS

15

7

DIG OUTDIGITAL 1

RIGHT B

OPTICAL IN 1

DIGITAL 4

CENTER CENTERFRONT L FRONT L

FRONT R

SUB

8

OPTICAL IN 2

EXTERNAL 5.1 INPUTS

LS

RS

16

SUB

OPTICAL OUT

12V TRIGGERS OUT

132

17

9

RS 232

AC MAINS INPUT

18

1

5

3

1

VIDEO INPUT

2

LL

AUDIO INPUT

RR

6

4

VIDEO 1 VIDEO 2 VIDEO 3 VIDEO 4 VIDEO 5 VIDEO 6

4 OUT

5 OUT

2

6 OUT

MON OUT

10

S VID 1 IN

S VIDEO 2 IN

3

S VID 3 IN

S VIDEO 5 IN

S VIDEO 4 IN

S VIDEO 6 IN

VIDEO 4 VIDEO 5 VIDEO 6

AUDIO OUT

11

4

S VID 4 OUT

S VID 5 OUT MONITOR OUT

CD AUX TUNER

12

S VID 6 OUT

IN

OUT

Y

TAPE MONITOR
IN

PLAY

13

5

COMPONENT VIDEO

OUT

RECORD

6

IN

NAD LINK

OUT

Cb

Cr

MULTI

SOURCE

OUT

LL

R

FRONT R

14

1. VIDEO INPUTS 7. COAXIAL DIGITAL INPUTS/OUTPUT 13. TAPE INPUT/OUTPUT

2. VIDEO OUTPUTS 8. OPTICAL DIGITAL INPUTS/OUTPUT 14. MULTI SOURCE OUTPUT

3. S-VIDEO INPUTS 9. RS-232 15. EXT. 7.1 OUTPUTS

4. S-VIDEO OUTPUTS 10. AUDIO INPUTS 16. EXT. 5.1 INPUTS

5. COMPONENT VIDEO INPUTS/OUTPUTS 11. AUDIO OUTPUTS 17. 12V TRIGGET OUTPUTS

6. NAD LINK INPUT/OUTPUT 12. CD/AUX/TUNER INPUTS 18. AC INLET

WIRING DIAGRAM

AC INLET

L

E

N

YEL-GRN

BLACK

X16

1

20-PIN RIBBON

X14

RED

X13

1

BNC CONNECTOR

X11

1

VIDEO BOARD

BROWN

CHASSIS

YEL-GRN

BROWN

EARTH

+5VD

GND

+15V

-15V

NEUTRAL

SWITCHING

POWER SUPPLY

BLUE

LIVE

GREEN

GREEN

RED

X30

GRAY

1

YELLOW

X27

1

20-PIN RIBBON

1

X24

+15V
AGND

-15V
+5VD
DGND

X26

20-PIN RIBBON

8-PIN RIBBON

MAIN BOARD

B

1

1

X19

DECODER BOARD

C

1

1

A

ENCODER

POWER SWITCH BOARD

P2A
P1A

CN1

S-1

1

S-2

VFL

S-3

1

FRONT PANEL BOARD

SPECIFICATIONS

STANDARD SETTINGS SURROUND BACK LEFT & RIGHT

1. Volume = 0dB 1. Dolby 1.0 test disc (5.1 input)

2. Tone Controls = 0dB 2. Choose titles with SL and SR signals

3. LFE Channel = 0dB 3. Put unit to 6.1 mode setting

4. Bass Limiter = Off

5. Channel Levels = 0dB

6. Delays = 0 meters/ft

7. Speakers = Large

8. Subwoofer = Yes

DOLBY DIGITAL MODE

1. Output level All 7 Title 30 997Hz 0.22 ± 0.03 V

2. Channel Difference All 5 Tilte 30 997Hz 0 ± 0.5 dB

3. Frequency Response
Title 30 for reference. For Sub,
reference is start of title 48

4. THD
With audio BPF

5. S/N Ratio, A-wtd
20kHz LPF

6. Channel Separation
20kHz LPF

: Dolby test disc 1.0

L Title 43 200Hz-20kHz 0 ± 0.2 dB
R Title 45 200Hz-20kHz 0 ± 0.2 dB
C Title 44 200Hz-20kHz 0 ± 0.2 dB
SL Title 46 200Hz-20kHz 0 ± 0.2 dB
SR Title 47 200Hz-20kHz 0 ± 0.2 dB
Sub Title 48 20Hz-80Hz 0 ± 0.2 dB

L Title 65 997Hz ≤0.01%
R Title 67 997Hz ≤0.01%
C Title 66 997Hz ≤0.01%
SL Title 68 997Hz ≤0.01%
SR Title 69 997Hz ≤0.01%
Sub Title 70 30Hz ≤0.03%

All 5 Title 63 ≥65dB

All 5 Title 65-69 997Hz ≥65dB

DTS MODE

1. Output level
For Sub, ref. L out at track 10

2. Channel Difference All 5 Track 21 1kHz 0 ± 0.5 dB

3. Frequency Response
Track 21 for reference

4. THD

: DTS Consumer Product Evaluation Test Disc

All 5 Track 21 1kHz 0.22 ± 0.03 V
Sub Track 15 30Hz +9.4 ± 1 dB

L Track 26 20Hz-20kHz 0 ± 0.2 dB
R Track 27 20Hz-20kHz 0 ± 0.2 dB
C Track 30 20Hz-20kHz 0 ± 0.5 dB
SL Track 28 20Hz-20kHz 0 ± 0.5 dB
SR Track 29 20Hz-20kHz 0 ± 0.5 dB

L Track 10 1kHz ≤0.01%

With audio BPF

R Track 11 1kHz ≤0.01%
C Track 14 1kHz ≤0.01%
SL Track 12 1kHz ≤0.01%
SR Track 13 1kHz ≤0.01%

DOLBY PROLOGIC MODE

: Analog input signal = 2V

1. THD
With 80kHz LPF

2. S/N Ratio A­wtd

3. Frequency Response
1kHz reference

POWER AMPLIFIER

: External 5.1 input = 2V

L L 1kHz ≤0.05%
R R 1kHz ≤0.05%
C L = R 1kHz ≤0.05%
SL L = -R 1kHz ≤0.05%
SR L = -R 1kHz ≤0.05%

L L 1kHz ≥85dB
R R 1kHz ≥85dB
C L = R 1kHz ≥85dB
SL L = -R 1kHz ≥85dB
SR L = -R 1kHz ≥85dB

LL

40Hz 0 ± 0.2 dB
20kHz 0 ± 0.4 dB

RR

40Hz 0 ± 0.2 dB
20kHz 0 ± 0.4 dB

C L = R

300Hz 0 ± 0.2 dB
20kHz 0 ± 0.4 dB

SL/SR L = -R

30Hz 0 ± 0.4 dB

6.5kHz -3 ± 1 dB

1. Output level All 5 1kHz 2.2 ± 0.3 V

2. THD, with 30kHz LPF All 5 1kHz ≤0.01%

3. S/N Ratio, A-wtd All 5 ≥90dB

4. Frequency response All 5 20Hz-20kHz 0 ± 0.2 dB

PHYSICAL SPECIFICATIONS:

Size (W x H x D) 17 3/4 x 3 7/8 x 11 1/4"

(450 x 97 x 285 mm)

Net weight 11 lbs (4.99kg)
Shipping weight 13 lbs (5.89kg)

1

Flextronics Design Finland

Finlaysoninkatu 2

33210 Tampere

FINLAND

Tel. [phone]

11

Main sheet

NAD S170

2.2b

17-May-2002

13:16:11

Title

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Time:

A3

Author:

Jouni Myllymäki

Logic

Logic.Sch

On-screen display

Osd.sch

Output Buffering

OutBuf.sch

S-Video switching

SVid_swi.sch

Component video switching

Compon.sch

Slot connector, serial control, misc.

Slot.sch

Composite video and S-Video REC switching

Cs_swi.sch

S-Video switching

1

6

Composite switching

1

6

Component
video selector

1

2

Control logic

OSD Switching

Osd_swi.sch

OSD

Interrupt

234

5

234

5

4

5

6

5

4

6

OSD

PAL/NTSC

Detection

Separation

VSync

Misc. Logic

Digital Audio Outputs And RS-232 Interface

Misc.Sch

Digital Audio Inputs

DigIn.Sch

RS-232

Input selector

12341

2

NADLINK

RC5

IR sensor

Video & Digital I/O schematics

KEY BOARD - COMPONENT SIDE

KEY BOARD - SOLDER SIDE

VIDEO BOARD - COMPONENT SIDE

VIDEO BOARD - SOLDER SIDE

PCB LAYOUT

MAIN BOARD - COMPONENT SIDE

MAIN BOARD - SOLDER SIDE

2

11

NTSC/PAL detection & miscellaneous logic

NAD S170

2.2b

17-May-2002

13:17:20

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Author:

IO

1

IO2IO3IO

4

IO / GCK2

6

IO / GCK3

7

IO8IO

9

GND

10

IO11IO12IO13IO

14

TDI

15

TMS

16

TCK

17

IO18IO19IO20IO

22

GND

23

IO

24

IO25IO26IO27IO28IO

29

TDO

30

Vccio

32

IO33IO35IO36IO

37

IO / GSR

39

IO / GTS2

40

Vcc

41

IO / GTS1

42

IO

43

IO / GCK1

5

Vcc

21

GND

31

IO44IO34IO

38

IC29

XC9536_PC44

+5D

C186

10nF

C189

10nF

C200

10nF

C194

100nF

C201

100nF

C197

100nF

3 4

5 6

7 8

1 2

X15

X8P2M

+5D

C178

100uF

RESET

OSC_SEL_NTSC

PAL/NTSC

OSC_SEL_PAL

SEL_SIG_INFO

SEL_SIG_INFO

VSYNC_OUT

SYDET

INTERRUPT

INT_ACK

LATCH_SEL

ENA_VIDEO

TP16

TP18

TP21

TP25

TP15

TP24

TP29

TP22

TP27

TP30

TP33

TP31

TP28

TP23

TP26

OUT

2

VDD3GND

1

CR3

Epson SG-10

Crystal oscillator 32.768kHz

+5D

C184

100nF

TP37

TP38

BYPASS_OSD_C

XILINX_2

XILINX_1

OSD_FB

3

11

OSD

NAD S170

2.2b

17-May-2002

13:17:57

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L22

Not installed

C140

Not installed

VSYNC_OUT

R206

2k4

C175

100nF

R209

2k4

5

6

7

IC26B

LM393M

R211
3k9

R207
10k

+5A

CR1

14.31818MHz

C164

22pF

CR2

17.734475MHz

Vertical sync detection

C177

100nF

+5D

+5D

4 IO113 IO82 IO41 IO

1

1C132C53C64C

12

4 OI103 OI92 OI31 OI

2

GND

7

VCC

14

IC25

74HC4066

C158

100nF

C156

33pF

C163

C168

33pF

PAL/NTSC

SYDET

FRM/DET

C241

100uF

4*fs Oscillators for PAL/NTSC

OSC_SEL_NTSC

OSC_SEL_PAL

SEL_SIG_INFO

SEL_SIG_INFO

Signal Format/Detection Out

SEL_SIG_INFO = 0 - Detection; 1 - PAL/NTSC

R285

10k

R210

4k7

+5D

3

2

1

84

IC26A

LM393M

+5D

C176

100nF

Unused

OSD_MOSI

OSD_SCLK

OSD_CS

OSD_Y_IN

OSD_Y_UNBUF

OSD

YOUT

1

VIDEO IN

2

RES3FTR

4

AVdd5DVdd

6

CSYNC

7

XTAL IN

8

XTAL OUT

9

MUTE10DATA

11

CLK12CSN

13R14

YIN

28

VIDEO OUT1

27

VIDEO OUT2

26

CIN

25

COUT

24

LESCREEN

23

LECHAR

22

AGND21DGND

20

BAR

19CO18FB17B16G15

IC24A

STV5730A-SO

C132

100nF

C133

100uF

R277

Not installed

R276

0R

R233

0R

R173

5k6

R182

22k

C139

220pF

C134

22nF

R283

4k7

+5A

+5A

+5D

C129

100nF

R177

5k6

R278

3k3

R178

5k6

R281

2k2

C149

2u2

OSD_C_OUT

R279

Not installed

R280

Not installed

+5A

C131

100nF

C232

100nF

C236

100nF

OSD_CHROMA

MAX_NC

+5A

XILINX_2

C141

2u2

R137

470k

VREF

C242

1nF

D47

OSD_FB

R263

330k

+5A

R275

Not installed

C142

100nF

VREF

Chroma attenuator

1

5

3

4

6

2

IN

COM

Vcc

NO

NC

GND

IC37

MAX4599

D56

-5A

-5A

VREF

4

11

SVideo & Composite Output Buffering

NAD S170

2.2b

17-May-2002

13:18:37

Title

Size:

Project:

Date:

File:

Revision:

Sheet

of

Time:

A3

Author:

R24

75R

3

2

1

84

IC4A

OPA2652

R43

47k

C20

Not installed

R45

Not installed

Note 1

SVIDEO_C_OUT

SVIDEO_Y_OUT

5

6

7

IC16B

OPA2652

+5A

-5A

3

2

1

84

IC16A

OPA2652

C101

100nF

C102

100nF

R153

75R

R116

75R

R114

47k

R135

47k

+5A

-5A

C108

Not installed

R128

Not installed

C98

Not installed

R124

Not installed

Note 1

Note 1

CsVIDEO_TO_OUTBUF

SVIDEO_Y_TO_OUTBUF

SVIDEO_C_TO_OUTBUF

S-Video OSD out

SVIDEO_Y_OUT

SVIDEO_C_OUT

C96

Not installed

C117

Not installed

S-Video 4 out

SVID_Y_OUT4

SVID_C_OUT4

C76

Not installed

C97

Not installed

VIDEO OSD OUT

VIDEO 6 OUT

Composite video 6 and OSD outputs

Note 2

SVideo OSD output buffers

+5A

-5A

C120

100nF

C121

100nF

SVID_C_OUT4

SVID_Y_OUT4

5

6

7

IC17B

OPA2652

R1221kR121

1k

+5A

-5A

3

2

1

84

IC20A

OPA2652

R1701kR171

1k

R100

75R

R112

75R

R120

47k

R169

47k

C92

Not installed

R133

Not installed

C116

Not installed

R159

Not installed

Note 1

Note 1

SVIDEO_4_Y

SVIDEO_4_C

SVID_C_OUT6

SVID_Y_OUT6

3

2

1

84

IC17A

OPA2652

R1521kR148

1k

5

6

7

IC18B

OPA2652

R1311kR132

1k

R126

75R

R143

75R

R147

47k

R130

47k

C99

Not installed

R125

Not installed

C111

Not installed

R119

Not installed

Note 1

Note 1

SVIDEO_6_Y

SVIDEO_6_C

S-Video 5 out

SVID_Y_OUT5

SVID_C_OUT5

C74

Not installed

C95

Not installed

S-Video 6 out

SVID_Y_OUT6

SVID_C_OUT6

C100

Not installed

C115

Not installed

S-Video outputs

SVID_C_OUT5

SVID_Y_OUT5

5

6

7

IC20B

OPA2652

R1451kR151

1k

+5A

-5A

3

2

1

84

IC15A

OPA2652

R1421kR141

1k

R104

75R

R106

75R

R150

47k

R140

47k

C122

Not installed

R158

Not installed

C91

Not installed

R118

Not installed

Note 1

Note 1

SVIDEO_5_Y

SVIDEO_5_C

SVideo 4 output buffers

SVideo 5 & 6 output buffers

Composite video OSD output buffer

C25

100nF

C26

100nF

C103

100nF

C104

100nF

C84

100uF

C85

2u2

C89

100uF

C52

2u2

C135

100uF

C90

100uF

C150

100uF

C87

100uF

C57

2u2

C88

100uF

C83

2u2

C82

100uF

C32

100uF

1

3

2

4

5

7

6

8

GND

X8

X4F2SVHS

1

3

2

4

5

7

6

8

GND

X7

X4F2SVHS

231

X3

X2RCA

L15

NFM51R00P206

L13

NFM51R00P206

L14

NFM51R00P206

R54

Not installed

R48

Not installed

Cs_OUT6

+5A

-5A

C109

100nF

C110

100nF

C185

Not installed

R257

Not installed

C226

Not installed

R258

Not installed

C227

Not installed

R259

Not installed

C228

Not installed

R260

Not installed

C229

Not installed

R261

Not installed

C230

Not installed

R262

Not installed

R203

Not installed

R204

Not installed

R212

Not installed

R217

Not installed

R219

Not installed

R220

Not installed

R222

Not installed

R253

Not installed

Note 2

Note 2

Note 2

Note 2

R53

1k

C152

Not installed

R18

Not installed

R44

1k

R136

1k

C231

Not installed

R42

Not installed

R115

1k

R111

1k

C154

Not installed

R107

Not installed

R110

1k