Funai PLF-76-TD Service manual

TFT PORTABLE DVB-T/DVD PLAYER

FUNAI PLF-76TD

SERVICE MANUAL

CAUTION: Before servicing the chassis, read the “IMPORTANT SERVICE SAFETY INFORMATION” section on

© 2006- PRINTED IN

M595MB

page 2 of this manual.

SPECIFICATIONS

z GENERAL SPECIFICATION

z 7” ACTIVE-MATRIX TFT TYPE.
z DVD, VCD, CD, CD-R, CD-RW, MP3, DIVX, HDCD

SUPPORTS.

z USB FUNCTION
z 16:9 / 4:3 PICTURE SELECT.
z HIGH BRIGHTENNESS.
z HIGH CONTRAST.
z WITH LOGO OPENING SCREEN.
z SLOW MOTION ½, 1/4, 1/8, 1/16
z F.B / F.F x2, x4, x8, x16 SPEED.
z ANGLE MENU.
z 20 TRACK PROGRAM FOR CD PLAYING.
z ZOOM x 2, 3, 4.
z REMOTE CONTROL.
z S. VIDEO OUTPUT (for Ext. TV Monitor)
z HEADPHONE OUT x 1.
z AUDIO OUTPUT 0.5W x 2/8 ohm.
z LONG BATTERY TIME OF OVER 2 HRS.
z DIMENSION :

212(L) x 170(W) x 430(H) mm(excluding battery)

z AC POWER SOURCE:

ADAPTER: 230V

z DC POWER SOURCE: BATTERY PACK: 7.2V
z FEATURES FOR DVB-T TUNER (FREE ON AIR)
z FREQUENCY RANGE :

VHF CH5 – CH12 (174MHZ – 230MHZ)
UHF CH21 - CH69 (470MHZ – 862MHZ)

z 1,000 PROGRAMMABLE FAVORITE CH ANNELS
z 9 PICTURES FOR PROGRAM AUTO-SCAN
z EPG FUNCTION SUPPORT (TELE-TEXT OPTION)
z PROGRAM LIST WITH PROGRAM PREVIEW AFTER

TUNER POWER ON

z OSD TRANSPARENT ADJUSTMENT.
z FULL FUNCTION REMOTE CONTROL

CONTENTS

IMPORTANT SERVICE SAFETY INFORMATION................2

DISASSEMBLY FOR REPAIR .................................................3

WIRING DIAGRAM……………………………………....……4

BLOCK DIAGRAM....................................................................5

CIRCUIT DESCRIPTION .............................……………...6~16

PARTS LIST ..........................................…………............ 17~29

EXPLODED VIEW (CABINET)............................................. 30

EXPLODED VIEW (DVB-T).................................................. 30

SCHEMATIC DIAGRAMS.................................................32~40

PRINTED CIRCUIT BOARDS.......................................... 41~54

Note: Follows a policy of continuous advancements in development. For this reason specifications may be changed without notice.

1. SAFETY PRECAUTIONS

Before returning a unit to the customer, always make a safety check
of the entire unit, including, but not limited to the following items:
a. Be sure that no built-in protective devices are defective and/or
have been defeated during servicing.
(1) Protective shields are provided to protect to protect both the
technician and the customer. Correctly replace all missing protective
shields including any removed for servicing convenience.
(2) When reinstalling the chassis and/or other assemblies in the
cabinet, be sure to put back in place all protective devices, including,
but not limited to, nonmetallic control knobs, insulating fishpapers,
adjustment and compartment covers/shields and isolation resistor
capacitor networks. Do not operate this unit of permit it to be operated
without all protective devices correctly installed and functioning.
b. Be sure that there are no cabinet openings through which an adult
or child might be able to insert their fingers and contact a hazardous
voltage. Such openings include, but are not limited to, excessively wide
cabinet ventilation slots, and an improperly fitted and/or incorrectly
secured cabinet back cover.
c. Leakage Current Hot Check - With the unit completely
reassembled, plug the AC line cord directly into a AC outlet. (Do not
use an isolation transformer during this test.) Use a leakage current
tester or a metering system that complies with American National
Standards institute (ANSI) C101.1 “Leakage Current for Appliances”
and Underwriters Laboratories (UL) 1410, (50.7). With the unit AC
switch first in the ON position and then in the OFF position, measure
from a known earth ground (metal water pipe, conduit, etc.) to all
exposed metal parts of the unit (antennas, handle bracket, metal cabinet,
screwheads, metallic overlays, control shaft, ect.), especially any
exposed metal parts that offer an electrical return path to the chassis.
Any current measured must not exceed 0.5 milliamp. Reverse the unit
power cord plug in the outlet and repeat test.
ANY MEASUREMENTS NOT WITHIN THE LIMITS SPECIFIED
HEREIN INDICATE A POTENTIAL SHOCK HAZARD THAT
MUST BE ELIMINATED BEFORE RETURNING THE UNIT TO
THE CUSTOMER.

AC LEAKAGE TEST

d. Insulation Resistance Test Cold Check
(1) Unplug the power supply cord and connect a jumper wire
between the two prongs of the plug.
(2) Turn on the power switch of the unit.
(3) Measure the resistance with an ohmmeter between the jumpered
AC plug and each exposed metallic cabinet part on the unit, such as
screwheads, antenna, control shaft, handle brackets, etc. When the
exposed metallic part has a return path to the chassis, the reading

ANTENNA
TERMINAL

EXPOSED

IMPORTANT SERVICE SAFETY INFORMATION

(READING
SHOULD
NOT BE
ABOVE

0.5mA)

EARTH
GROUND

METAL

PART

TEST ALL EXPOSED

DEVICE

UNDER

TEST

METAL SURFACES

2-WIRE CORD ALSO
TEST WITH PLUG
REVERSED (USING AC
ADAPTER PLUG A
REQUIRED)

OHMMETER

OM

LEAKAGE
CURRENT
TESTER

should be between 1 and 5.2 Megohm. When there is no return path to
the chassis, the reading must be “infinite”. If it is not within the limits
specified, there is the possibility of a shock hazard, and the unit must
be repaired and rechecked before it is returned to the customer.

2. PRODUCT SAFETY NOTICE

Some electrical and mechanical parts have special safety related
characteristics which are often not evident from visual inspection, nor
can be protection they give necessarily be obtained by replacing them
with components rated for higher voltage, wattage, etc. Parts that have

special safety characteristics are identified by a

¡I

on schematic and
parts list. Use of a substitute replacement that does not have the same
safety characteristics as the recommended replacement part might
create shock, fire, and/or other hazards. Product Safety is under review
continuously and new instructions are issued whenever appropriate.

3. SERVICING PRECAUTIONS
CAUTION: Before servicing the unit covered by this service manual
and its supplements, read and follow the SAFETY PRECAUTIONS on
this page. NOTE: If unforeseen circumstances create a conflict between
the following servicing precautions and any of the safety precautions,
always follow the safety precautions. Remember: Safety First.
General Servicing Precautions.
a. Always unplug the unit’s AC power cord from the AC power
source before:
(1) removing or reinstalling any component, circuit board, module,
or any other unit assembly.
(2) disconnecting or reconnecting any unit electrical plug or other
electrical connection.
(3) connecting a test substitute in parallel whit an electrolytic
capacitor in the unit.
Caution: A wrong part substitution or incorrect polarity
installation of electrolytic capacitors may result in an explosion hazard.
b. Do not defeat any plug/socket B+ voltage interlocks with which
the unit covered by this service manual might be equipped.
c. Do not apply AC power to this unit and/or any of its electrical
assemblies unless all solid-state device heat sinks are correctly installed.
d. Always connect a test unit ground lead to the unit chassis ground
before connecting the test unit positive lead. Always remove the test
instrument’s ground lead last.

4. LASER PRECAUTIONS
WARNING!

1. When servicing (in case it is necessary to confirm Laser Beam
Emission), be sure not to place your eyes any closer than 1 ft or 30cm
from the surface of the Object Lens on the Optical Pickup Block.
HANDLING THE LASER PICKUP

2. Laser diodes are extremely susceptible to damage from static
electricity. Even if a static discharge does not ruin the diode, it can
shorten its life or cause it to work improperly. When replacing the
pickup, use a conductive mat on the floor and desk and wear a wrist
band connected to ground through a 1M ohm resistor to protect the
laser diode from static damage. If the lens should get dusty, blow off
the dust carefully from the object.

3. There are no adjustable parts in the pickup assembly. If it is
defective, replace the whole pickup assembly.
CAUTION:
USE OF CONTROLS, ADJUSTMENTS OR PERFORMANCE OF
PROCEDURES HEREIN MAY RESULT IN HAZARDOUS
RADIATION EXPOSURE.
DANGER:
IF INTERLOCK FAILS OR IS DEFEATED, THE LASER LIGHT
IS ABLE TO FUNCTION. THE LASER IS INVISIBLE, AVOID
DIRECT EXPOSURE TO BEAM.

2

DISASSEMBLY FOR REPAIR

TO DISASSEMBLY THE BOTTOM METAL CABINET

1. Remove the 14 screws (A) from bottom metal cabinet.

TO REMOVE THE INNER PANEL

2. Remove the 6 screws (B) from the inner panel and out panel.

3

WIRING DIAGRAM

4

5

BLOCK DIAGRAM

CIRCUIT DESCRIPTION

100mΩ Power Distribution Switches: RT9701CB (U7)

NiMH BATTERY CHARGER CONTROLLER: LS2964S (U6)

Timer
LED
OSC

1
2
3

8
7
6

VDD
PWM
Vdet

GND

4

5

Idet

DUAL OPERATIONAL AMPLIFIER: RC4558D (U7,16)

A OUTPUT

1

8

V +

7

A -INPUT

A +INPUT

V -

2

3

4

B OUTPUT

6

B -INPUT

5

B +INPUT

6

CIRCUIT DESCRIPTION

PROGRESSIVE SCAN DVD PLAYER COMBO CHIP: MT1389DE/B (U5)

SWITCHING REGULATOR CONTROLLER FOR LCD BIAS: AT1380HP(U2,13,14)

7

CIRCUIT DESCRIPTION

2-WIRE SERIAL EEPROM: AT24C02A-10SC-207 (U6,U12)

DUAL LOW-VOLTAGE POWER AMPLIFIER: NJM2073M (U3)

8

CIRCUIT DESCRIPTION

24-BIT, 96 KHZ STEREO D/A CONVERTER FOR AUDIO: CS4340 (U15)

DUAL COMPARATORS: LM393DR (U10)

VOLTAGE REGULATOR: 78 L 08 (Q1)

GND

OUT IN

9

CIRCUIT DESCRIPTION

4-CHANNEL BTL MOTOR DRIVER FOR CD-ROM: AT5654H (U4)

300/500MA LOW DROPOUT LINEAR VOLTAGE REGULATOR: RP1101-19CXL, RP1102-

33CGL (U1,Q2)

10

CIRCUIT DESCRIPTION

8M/16M-BIT CMOS SINGLE VOLTAGE 3V ONLY HIGH SPEED FLASH: AT49BV163A-70TU,

S29AL008D70TFI020 (U11,U4)

DIGITAL TV STB BACKEND PROCESSOR: CT212T (U3)

11

CIRCUIT DESCRIPTION

2 BANKS X 512K X 16 BIT SYNCHRONOUS DRAM : K4S641632H-UC75 TSOP-54 (U1,U9)

INFRARED REMOTE CONTROL TRANSMITTER : SC6122-001 (IC1)

2
3

4
5
6

7

SS

1
2
3
4
5
6KI
7
8
9
10

12 13

KI
KI
KI
KI
KI

REM

V

DD

SEL

OSCO

OSCI

V

24

23

22
21
20

18
17
16
15

1411

KI
KI
CCS
KI/O
KI/O
KI/O19
KI/O
KI/O
KI/O
KI/O

KI/O
LMP

1
0

0

1

2
3
4
5
6
7

12

CIRCUIT DESCRIPTION

TV/VIDEO SINGNAL PROCESSOR WITH BUILT-IN TFT-LCD CONTROLLER: VS507 (U3)

8-BIT COMPATIBLE SHIFT/STORE REGISTER: HEF4094BT (U4)

13

CIRCUIT DESCRIPTION

HIGH FREQUENCY PWM STEP-UP REGULATOR: EL5220CY (U1A)

TRIPLE 2-CHANNEL ANALOG MULTIPLEXER /DEMULTIPLEXER: 74HC4053 (U2)

14

CIRCUIT DESCRIPTION

2A STEP DOWN DC TO DC CONVERTER: MP1410ES (U8, 9)

10-pin, 24-Bit, 192 kHz Stereo D/A Converter: CS4345 (U5)

DIGITAL TV STB BACKEND PROCESSOR: B1117N-ADJ (U10)

15

16

Ref. No Parts No. Description QTY

185-04620-001 M462 INVERTER CHASSIS

IV1070LG-2(SHANGHAI
TECHGOOD) (FOR LG 7" TFT
DIS.)

HS-M595MB-

GY-507

001-04050-710 N405M REMOTE CONTROL

IC 1 002-06322-990 IC AP6322-0002-S (ASP) SMT 1
Q1 003-24081-140 CHIP TRANSISTOR

004-01122-600 INFRARED EMITTING DIODES

R1 005-52109-301 CHIP RESISTOR 1 OHM +-5%

C2,3 006-72181-250 CERAMIC CHIP CAP 180 PF +-

C1 009-10476C510 ELECT CAP 47 UF +80%-20%

X1 028-00455-011 CERAMIC FILTER ZTB455E

041-04051-002 N405 HANDSET BATTERY

041-04052-002 N405 HANDSET BATTERY

104-04050-0956 N405M H/S BOTTOM CAB.

111-04050-0956 N405M H/S BATTERY DOOR

124-05261-0499 M526MB H/S BACK

125-04050-001 T405M H/S MEMBRANE

FOR HENDSET 144-11405-402 SCREW 1.4 X 5 KB (D=2.5MM) 7
M515MB-SIL-

KNOB

M595MB H/S CHASSIS
W/COSMETIC ASSY "FUNAI
PLF-76TD" (L.GY.MNC7-0) (48
KEY)

P.C.B. (48 KEY)

2SC4081(RS)-TLB (ROHM)

EL-1L2

(1608) (MCH03EZHJ109)

5% 50V (1608)
(MCH185A181JK)

10V (PIN LENGTH 9MM)

(MEC) (2 PINS)

PLATE (+)

SPRING (-)

(L.GREY MN7-0)

(L.GREY MN7-0)

PLATE"ENZER E5698P7"

SW.PLATE W/RED 032C
SIL.8001C/GN.375C 2X/SIL.GY
8403C/WH.SK.

M515MB SP.SIL.SS9-1 KNOB
VERSION ASSY

1

1

1

1

1

1

2

1

1

1

1

1

1

1

1

1

Ref. No Parts No. Description QTY

127-04625-0974 M515 POWER KNOB (INJ.GY

17
127-04627-0974 M515 PANEL OPEN KNOB

128-05152-0974 M515 DISC OPEN BUTTON

128-05152-1974 M515 BUTTON SET

M462-CAR-

ADAPTOR-02

001-35000-400 3500MC CAR BAT SUPPLY

D1-4 004-05401-300 RECTIFIER IN-5401 4
R1 005-10152-314 RESISTOR 1.5 K +-5% 1/4W 1
C1 006-10203-550 CERAMIC CAP 0.02 UF +80%-

C2 009-10107-525 ELECT CAP 100 UF +80%-20%

D10 019-12000-110 L.E.D. DIAMETER 3MM(RED)

031-02600-040 JUMPER WIRE AWG22UL

031-10500-100 JUMPER WIRE AWG22UL

043-20192-300 T409 DC CORD 75"#20 WH/BLK

050-05020-250 2.5A/250V GLASS FUSE

101-97030-010 9703 CAR ADAPTOR FRONT

102-97030-010 9703 CAR ADAPTOR REAR

105-97030-010 9703 CAR ADAPTOR CAP 1

MN7-0/ABS) (SP.SIL.SS9-1)

(INJ.GY MN7-0/ABS)
(SP.SIL.SS9-1)

(INJ.GY MN7-0/ABS)
(SP.SIL.SS9-1)

(INJ.GY.MN7-0/ABS)
(SP.SIL.SS9-1)
M518MB CAR ADAPTOR ASSY
(OUTPUT DC 9V,1.2A)

P.C.B.

20% 50V

25V

SEL-2110R

60MM RED

50MM BLACK(ONE SIDE
4MM,ONE SIDE 10MM)

(2P)W/BUSHING &DC PLUG
(Y001-D19102C458505Q)(Y.C.)

5X20MM FAST ACTING
BUSSMANN/VDE/SEMKO/BSI/I
MQ/UR

CABINET (BLACK)

CABINET (BLACK)

1

1

1

1

1

1

PARTS LIST

1

1

1

1

1

1

1

1

1