Sony NV-U74 Manuale utente
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
© 2008.10
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
copyright law. Do not violate the previsions of the
copyright law.
Copyright © 2008 ZENRIN CO., LTD. All Rights
Reserved.
© 2007 NAVTEQ All Rights 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
2
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
3
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
4
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
terminal board
MAIN board
MAIN board
lock
frame
PRECAUTION WHEN CHECKING THE MAIN BOARD
NV-U74
5
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
6
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
7
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
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
8
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
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
9
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
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
RG
RB
RE bracket (upper)
RI bracket (lower)
RK light guide plate
front panel block
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
10
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
y
(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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