Sony NV-U74 User manual

SERVICE MANUAL

Sony Corporation

Audio&Video Business Group

Published by Sony Techno Create Corporation

NV-U74

SPECIFICATIONS

PERSONAL NAVIGATION SYSTEM

9-889-298-01

2008J05-1

Mexican Model

Ver. 1.0 2008.10

COMPONENT MODEL NAME

NV-U74

Main unit NV-U74

Cradle NVA-CU6

Car battery adapter XA-DC3

The map and POI data may contain copyrighted

material. Copyrighted data on a “Memory Stick

Duo” should be used within the limits of the

Reserved.

• Microsoft, Windows and Windows Vista are

registered trademarks of Microsoft Corporation in

the United States and other countries.

• “Memory Stick”, , “Memory Stick Duo”,

, “Memory Stick PRO Duo”,

, “Memory Stick Micro”

(“M2”), “MagicGate”, , “nav-u”

and are trademarks of Sony

Corporation.

“MagicGate” is a generic name of a copyright

protection technology, developed by Sony

Corporation.

Supplied accessories

• Cradle

• Car battery adapter

• USB cable

• Quick Start Guide

• Important Information

• End-User License Agreement

• Warranty Card

Design and specifications are subject to change

without notice.

Main unit

Operating temperature: 5–45ºC(41–113ºF)

Power requirements: DC 5 – 5.2 V

from supplied USB cable, optional AC adapter, or

supplied 12 V/24 V car battery adapter (negative

ground)

Connection terminals:

DC IN 5-5.2V jack

USB jack

External GPS antenna jack

Memory card slot: Memory Stick Duo slot

Speaker: ø30 mm (1.2 in) circular speaker

Consumption current: Max. 1.5 A

Dimensions: Approx. 133 × 79 × 20 mm

(5.2 × 3.1 × 0.8 in)

(w × h × d, protruding parts excluded)

Mass: Approx. 210 g (7.4 oz)

Monitor

System: Transmissive liquid crystal display

Dimensions: 4.3 in (16:9)

Approx. 95 × 54, 109 mm

(3.7 × 2.1, 4.3 in) (h × v, d)

Segment: 391,680 (816 × 480) dots

Built-in battery charging time/usage

time

Charging time

With the supplied car battery adapter/optional AC

adapter: Approx. 2 hours (with unit turned on), or

1 hour (in standby mode)

With the supplied USB cable:

Approx. 2 hours (in standby mode)

Usage time

Up to 2 hours (depending on usage)

NV-U74

1. SERVICING NOTES ............................................. 3

2. GENERAL .................................................................. 5

3. DISASSEMBLY

3-1. Disassembly Flow........................................................... 7

3-2. Cap .................................................................................. 7

3-3. Front Block Assy, Rear Panel Block Assy...................... 8

3-4. Battery Assy (Lithium Ion Battery) (BAT3001) ............. 8

3-5. Liquid Crystal Display Panel (LCD5001),

Touch Panel (TPS5001) .................................................. 9

3-6. MAIN Board ................................................................... 10

3-7. Case (GPS) Assy (ANT001) ........................................... 10

4. TEST MODE ............................................................ 11

5. DIAGRAMS

5-1. Block Diagram - GPS/MEMORY/LCD Section -.......... 16

5-2. Block Diagram - MAIN Section -................................... 17

5-3. Block Diagram - POWER SUPPLY Section -................ 18

5-4. Printed Wiring Board

- MAIN Board (Component Side) -................................ 20

5-5. Printed Wiring Board

- MAIN Board (Conductor Side) -.................................. 21

5-6. Schematic Diagram - MAIN Board (1/10) -................... 22

5-7. Schematic Diagram - MAIN Board (2/10) -................... 23

5-8. Schematic Diagram - MAIN Board (3/10) -................... 24

5-9. Schematic Diagram - MAIN Board (4/10) -................... 25

5-10. Schematic Diagram - MAIN Board (5/10) -................... 26

5-11. Schematic Diagram - MAIN Board (6/10) -................... 27

5-12. Schematic Diagram - MAIN Board (7/10) -................... 28

5-13. Schematic Diagram - MAIN Board (8/10) -................... 29

5-14. Schematic Diagram - MAIN Board (9/10) -................... 30

5-15. Schematic Diagram - MAIN Board (10/10) -................. 31

5-16. Printed Wiring Board - MS DUO Board - ...................... 32

5-17. Schematic Diagram - MS DUO Board -......................... 32

6. EXPLODED VIEWS

6-1. Front Block Assy Section ............................................... 48

6-2. Rear Panel Block Assy Section....................................... 49

7. ELECTRICAL PARTS LIST .............................. 50

Accessories are given in the last of the electrical parts list.

TABLE OF CONTENTS

NOTES ON CHIP COMPONENT REPLACEMENT

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be dam-

aged by heat.

FLEXIBLE CIRCUIT BOARD REPAIRING

• Keep the temperature of soldering iron around 270 °C during

repairing.

• Do not touch the soldering iron on the same conductor of the

circuit board (within 3 times).

• Be careful not to apply force on the conductor when soldering

or unsoldering.

NV-U74

SECTION 1

SERVICING NOTES

UNLEADED SOLDER

Boards requiring use of unleaded solder are printed with the lead-

free mark (LF) indicating the solder contains no lead.

(Caution: Some printed circuit boards may not come printed with

the lead free mark due to their particular size)

: LEAD FREE MARK

Unleaded solder has the following characteristics.

• Unleaded solder melts at a temperature about 40 °C higher

than ordinary solder.

Ordinary soldering irons can be used but the iron tip has to be

applied to the solder joint for a slightly longer time.

Soldering irons using a temperature regulator should be set to

about 350 °C.

Caution: The printed pattern (copper foil) may peel away if

the heated tip is applied for too long, so be careful!

• Strong viscosity

Unleaded solder is more viscous (sticky, less prone to ﬂow)

than ordinary solder so use caution not to let solder bridges

occur such as on IC pins, etc.

• Usable with ordinary solder

It is best to use only unleaded solder but unleaded solder may

also be added to ordinary solder.

NOTE OF CHECKING THE TEST MODE

Program data for test mode and special USB cable for test mode is

necessary to conﬁrm the test mode.

Conﬁrm the method of obtaining the program data for test mode to

each service headquarters.

Use the Part No. J-2502-111-1 for special USB cable for test

mode.

NOTE OF REPLACING THE MAIN BOARD

Necessarily execute following work when you exchange the

MAIN board.

• Shipment setting (Ship): 10-2. Shipment Setting (Ship) (refer

to page 12)

• Calibration: 10-4-4. Touch panel (refer to page 14)

• Writing work of data: Conﬁrm details to each service head-

quarters.

NOTE OF REPLACING THE TOUCH PANEL

(TPS5001)

Necessarily execute the calibration when replacing touch panel

(TPS5001). Refer to test mode “10-4-4. Touch panel” (page 14)

for the calibration.

NOTE OF REPLACING THE PARTS

IC0102, IC0105, IC0119, IC1001, IC1502, IC1503, IC1504,

IC2001, IC3002, IC3003, IC3501 and IC4505 on the MAIN board

cannot exchange with single. When these parts on the MAIN board

are damaged, exchange the entire mounted board.

NOTE OF REPLACING THE CSP (CHIP SIZE PACK-

AGE) IC

Replacing of IC3504 on the MAIN board used in this set requires

a special tool.

NV-U74

The MAIN board is attached with multiple shield plates.

For electrical check or replacement of mounted parts,

the shield plates must be removed and the frame of terminal board must be cut off.

Even if the frame of terminal board is cut off, the performance is not impaired.

shield plate (CPU)

shield plate (GPS)

shield plate (AU-USB-MS)

shield plate (power)

MAIN board

Insert tweezers into a gap between MAIN board and

shield plate, and unlock the shield plate and raise it.

Cut the notch with nippers to cut off the frame.

shield plate

terminal board

MAIN board

lock

frame

PRECAUTION WHEN CHECKING THE MAIN BOARD

NV-U74

SECTION 2

GENERAL

This section is extracted

from instruction manual.

Location of controls

Attaching the cradle to your car

Attaching the unit to the cradle Connecting the power

/ (on/standby) switch

MENU button

VOICE/POS. button

Shows the current position and

repeats the last voice guidance.

CHG (battery charge) indicator

Red:charging.

Green:fully charged.

O:adapter disconnected.

Display window/touch screen Nameplate

Speaker

RELEASE button

Memory Stick access indicator

(Memory Stick Duo)

slot

Built-in GPS antenna

GPS ANT (GPS antenna) jack

(USB) jack

DC IN 5-5.2V jack

Connects to the car battery adapter

or optional AC adapter XA-AC13.

RESET button

1Remove the protection cover.

Use the cover to keep the suction

cup clean when not in use.

2Select the installation location on

the dashboard.

Choose a clean, smooth surface with

an unobstructed view of the sky.

3Press rmly, then turn the lever

counterclockwise to lock into the

position.

Note

Clean the surface of the suction cup with a soft, damp, lint-free cloth if it becomes dirty

and attachment strength weakens. Be sure to dry the suction cup before reattaching.

To install on the windshield

Rotate the suction cup before attaching.

Any other procedure is the same as for installing on the dashboard.

1Open the built-in GPS antenna.

2Insert the unit rmly into the cradle until it clicks into place.

Click

3Adjust the monitor angle for optimal viewing.

Connect the unit to the cigarette

lighter socket with the supplied car

battery adapter.

NV-U74

Detaching the unit Detaching the cradle

1Press and hold RELEASE to release the unit.

2Close the built-in GPS antenna.

IMPORTANT

Follow the instructions below to avoid damaging the surface of the suction cup.

1Turn the lever clockwise to unlock

the cradle.

2Use the tab to detach the cradle

from surface.

Tab

3Attach the protection cover.

Note

After each use, detach the cradle from the dashboard or windshield.

NV-U74

SECTION 3

DISASSEMBLY

3-2. CAP

(Page 7)

3-3. FRONT BLOCK ASSY,

REAR PANEL BLOCK ASSY

(Page 8)

3-6. MAIN BOARD

(Page 10)

3-4. BATTERY ASSY

(LITHIUM ION BATTERY) (BAT3001)

(Page 8)

3-7. CASE (GPS) ASSY

(ANT001)

(Page 10)

3-5. LIQUID CRYSTAL DISPLAY PANEL (LCD5001),

TOUCH PANEL (TPS5001)

(Page 9)

SET

–REAR PANEL BLOCK ASSY –

–REAR PANEL

BLOCK ASSY –

–FRONT PANEL BLOCK ASSY –

two caps

stick

Note: When removing the caps,

stick the cap with a pointed

thin wire and take it out.

cap

main unit

(rear view)

• This set can be disassembled in the order shown below.

3-1. DISASSEMBLY FLOW

Note: Follow the disassembly procedure in the numerical order given.

3-2. CAP

NV-U74

3-3. FRONT BLOCK ASSY, REAR PANEL BLOCK ASSY

3-4. BATTERY ASSY (LITHIUM ION BATTERY) (BAT3001)

two screws

(M1.7)

LCD flexible board

(CN5002)

two claws

Open the rear panel block assy

in the direction of the arrow.

two screws

(M1.7)

front block assy

rear panel block assy

TOUCH PANEL SWITCH flexible board

(CN5001)

Note: Copper leaf sheet (battery) cannot re-used.

Please replace to brand-new part ones

copper leaf sheet (battery) is removed.

connector

(CN3001)

copper leaf sheet (battery)

top side

rear panel block assy

battery assy (lithium ion battery)

(BAT3001)



bottom side

NV-U74

3-5. LIQUID CRYSTAL DISPLAY PANEL (LCD5001), TOUCH PANEL (TPS5001)

liquid crystal display panel

(LCD5001)

cushion (D)

cushion

(LCD leakage)

cushion (CHG)

RM touch panel

(TPS5001)

bracket (right)

two support plates

two adhesive (support plates)

claws

four bosses

Remove the liquid crystal display panel

(LCD5001) in the direction of the arrow.

(four claws)

RL Remove the touch panel (TPS5001)

in the direction of the arrow.

(four claws)

RT cushion (LCD)

R RH

RE bracket (upper)

RI bracket (lower)

RK light guide plate

front panel block

bottom side

top side

Note: Necessarily execute the calibration when replacing touch

panel (TPS5001). Refer to test mode “10-4-4. Touch panel”

(page 14) for the calibration.

NV-U74

3-6. MAIN BOARD

3-7. CASE (GPS) ASSY (ANT001)

screw (P2)



speaker connector

(CN3502)

connector

(CN2501)

lower support cushion (LCD)

R sheet (GPS wire)

RB connector with wire lead

(CN0104, CN0105)

RE MAIN board

RT adhesive (PWB)

cushion (D)

battery connector

(CN3001)

Turn over the copper leaf sheet (battery).

GPS antenna connector

(CN0102)

rear panel block

top side

bottom side

shaft

rear panel block

screw (P2)

holder (HG)

hinge

case (GPS) ass

(ANT001)

Note: When the MAIN board is exchanged, it is necessary to

do some works. Conﬁrm the servicing notes “NOTE OF

REPLACING THE MAIN BOARD” (page 3).

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