HITACHI AV3000E Service Manual

SERVICE MANUAL MANUEL D'ENTRETIEN WARTUNGSHANDBUCH

CAUTION:

Before servicing this chassis, it is important that the service technician read the “Safety Precautions” and “Product Safety Notices” in this service manual.

SM00033

AV3000E

Data contained within this Service manual is subject to alteration for improvement.

ATTENTION:

Avant d’effectuer l’entretien du châassis, le technicien doit lire les «Précautions de sécurité» et les «Notices de sécurité du produit» présentés dans le présent manuel.

VORSICHT:

Vor Öffnen des Gehäuses hat der Service-Ingenieur die „Sicherheitshinweise“ und „Hinweise zur Produktsicherheit“ in diesem Wartungshandbuch zu lesen.

Les données fournies dans le présent manuel d’entretien peuvent faire l’objet de modifications en vue de perfectionner le produit.

Die in diesem Wartungshandbuch enthaltenen Spezifikationen können sich zwecks Verbesserungen ändern.

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

PLASMA TV

OCTOBER 2002

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 





SAFETY PRECAUTIONS

WARNING: The following precautions must be observed.

ALL PRODUCTS

1. Before any service is performed on the chassis an isolation transformer should be inserted between the power line and the product.

2. When replacing the chassis in the cabinet, ensure all the protective devices are put back in place.

3. When service is required, observe the original lead dressing. Extra precaution should be taken to ensure correct lead dressing in any high voltage circuitry area.

4. Many electrical and mechanical parts in HITACHI products have special safety related characteristics. These characteristics are often not evident from visual inspection, nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety

characteristics are identified by marking with a  on the schematics and the replacement parts list. The use of a substitute replacement component that does not have the same safety characteristics as the HITACHI recommended replacement one, shown in the parts list, may create electrical shock, fire, X-radiation, or other hazards.

5. Always replace original spacers and maintain lead lengths. Furthermore, where a short circuit

has occurred, replace those components that indicate evidence of overheating.

6. Insulation resistance should not be less than 2MΩ at 500V DC between the main poles and any accessible metal parts.

7. No flashover or breakdown should occur during the dielectric strength test, applying 3KV AC or

4.25KV DC for two seconds between the main poles and accessible metal parts.

8. Before returning a serviced product to the customer, the service technician must thoroughly test the unit to be certain that it is completely safe to operate without danger of electrical shock. The service technician must make sure that no protective device built into the instrument by the manufacturer has become defective, or inadvertently damaged during servicing.

CE MARK

1. HITACHI products may contain the CE mark on the rating plate indicating that the product contains parts that have been specifically approved to provide electromagnetic compatibility to designated levels.

2. When replacing any part in this product, please use only the correct part itemised in the parts list to ensure this standard is maintained, and take care to replace lead dressing to its original state, as this can have a bearing on the electromagnetic radiation/immunity.

LASERS

If the product contains a laser avoid direct exposure to the beam when the cover is open or when interlocks are defeated or have failed.



LEAD FREE SOLDER



This product uses lead free (unleaded) solder to help preserve the environment. Please read these instructions before attempting any soldering work.

Caution:

Always wear safety glasses to prevent fumes or molten solder from getting into the eyes. Lead free solder can splatter at high temperatures (600°C).

Lead Free Solder Indicator

Printed circuit board assemblies using lead free solder shown below are engraved with an "F" following Board Name.

Properties of Lead Free Solder

The melting point of lead free solder is 40~50°C higher than leaded solder.

When Servicing Solder

Solder with an alloy composition of Sn-3.0Ag-0.5Cu or Sn-0.7Cu is recommended. Although servicing with leaded solder is possible there are a few precautions that have to be taken. (Not taking

these precautions may cause the solder not to harden properly and lead to consequent malfunctions.)

Precautions when Using Leaded Solder

• Remove all lead free solder from soldered joints when replacing components.

• If leaded solder should be added to existing lead free joints, mix in the leaded solder thoroughly after the

lead free solder has been completely melted (do not apply the soldering iron without adding solder).

When Servicing Soldering Iron

A soldering iron with a temperature setting capability (temperature control function) is recommended. The melting point of lead free solder is higher than leaded solder. To avoid poor servicing performance, use a

soldering iron that maintains a high stable temperature (large heat capacity) and that allows temperature adjustment according to the part being serviced.

Recommended Soldering Iron

Soldering iron with temperature control function (temperature range: 320~450°C) Recommended temperature range for each part type:

Part to be Soldered

PCB with surface mount devices 320 ±30°C PCB without surface mount devices 380 ±30°C Chassis, metallic shield, etc. 420 ±30°C

Board Assemblies Using Lead Free Solder:

Soldering Iron

Temperature

•

FC4PDP Board (AVC block)

• SIGNAL/SOUND Board (MONITOR block)

• SP Terminal L/R Board, FILTER Board, LED Board (MONITOR block)

TABLE OF CONTENTS

FEATURES...............................................................................................................................................1

2. GENERAL SPECIFICATION ....................................................................................................................1

3. AV MODES ...............................................................................................................................................2

4. AV BOARD DESCRIPTION......................................................................................................................2

4.1. AVC Block Diagram...........................................................................................................................2

4.2. Tuner/Video Chroma (Schematic Sheet 1)........................................................................................2

4.3. Sound/AV3 Control (Schematic Sheet 2) ..........................................................................................4

4.4. Interface Board (Schematic Sheet 3) ................................................................................................6

4.5. Power Circuit/Level Shifter (Schematic Sheet 4)...............................................................................8

4.6. Micro-controller (Schematic Sheet 5) ................................................................................................9

4.7. COMB Filter/SVHS Output (Schematic Sheet 6).............................................................................10

4.8. SCART/FC-MSC Connection (Schematic Sheet 7).........................................................................11

5. AVC POWER BOARD DESCRIPTION...................................................................................................12

5.1. AVC Power Board Block Diagram...................................................................................................12

5.2. Switching Regulator, Controller and Power MOS FET....................................................................12

5.3. DC+5V Switching Regulator Module ...............................................................................................13

5.4. Photo-coupler...................................................................................................................................13

5.5. Switching Regulators.......................................................................................................................13

5.6. DC+5V Series Regulator.................................................................................................................14

5.7. Connectors.......................................................................................................................................14

6. FC4 BOARD DESCRIPTION..................................................................................................................15

6.1. FC4 Board Block Diagram...............................................................................................................15

7. PINOUT DATA........................................................................................................................................16

7.1. Micro-controller Pin-out (SDA5550) .................................................................................................16

7.2. AVC-PDP Connectors .....................................................................................................................17

7.3. FC4 Connectors...............................................................................................................................18

8. SERVICING INFORMATION..................................................................................................................21

8.1. Diagnostics ......................................................................................................................................21

8.2. AV Board Troubleshooting...............................................................................................................21

8.3. Power Board Troubleshooting.........................................................................................................22

8.4. Service Menu Data..........................................................................................................................23

9. UNIT WIRING DIAGRAM .......................................................................................................................36

9.1. AVC Unit..........................................................................................................................................36

10. ASSEMBLY DIAGRAM...........................................................................................................................37

10.1. AVC Unit.......................................................................................................................................37

11. SCHEMATIC DIAGRAMS.......................................................................................................................38

11.1. AV Board Schematics ..................................................................................................................38

11.2. Power Board.................................................................................................................................45

11.3. Control Board ...............................................................................................................................46

11.4. Mains Switch, Filter, Speaker & LED Boards...............................................................................47

12.

PCB LAYOUT DIAGRAMS.....................................................................................................................48

AV Board......................................................................................................................................48

12.1.

12.2. Power Board.................................................................................................................................49

12.3. Control, Speaker, Filter & LED Boards ........................................................................................50

13.

PARTS LISTS .........................................................................................................................................51

13.1.

AV3000 Assembly Parts List........................................................................................................51

13.2. AV Board Parts List......................................................................................................................51

13.3. Power Board Parts List ................................................................................................................51

13.4. Control Board Parts List...............................................................................................................51

AV3000 AVC Unit Service Manual

iii

1. FEATURES

• 852x1024 resolution, created by 32" ALIS Plasma display panel

• 1024x1024 resolution, created by 37"/42" ALIS Plasma display panel

• Advanced progressive & 1024 interlace, generates detailed picture without flicker

• TruBass by SRS, gives real bass sound

• Thin (9cm) and light, by separating monitor from tuner box (AVC). It is possible to hang monitor

on the wall.

• Swivel stand attached monitor, possible to swivel 30deg left and right.

• 3 SCART connectors plus front AV input can be connected with DVD, Set Top Box, VCR and

camera at the same time.

• 1 Component input allows YP

and PCbCr to be received. Signal is automatically identified.

bPr

• PC input connection, supporting various PC display formats.

2. GENERAL SPECIFICATION

Model

PDP panel Display size 976 (W) x 258 (D) x 580 (H) mm 1233 (W) x 300 (D) x 713 (H) mm

Sound output level

Speaker 4x 16cm corn type x2 ??? Power supply AC 220~240V 50Hz AC 220~240V 50Hz Power

consumption Colour

system Sound

system Tuning freq. 45~889MHz, VHF low/VHF high/Hyper/UHF 45~889MHz, VHF low/VHF high/Hyper/UHF Position

selection

PC input signal

AV input

(PDP; 32PD3000E + AVC; AV3000E)

32" (ALSI for mat) Plasma display panel (16:9), resolution 852(H) x1024 (V)

Max. 10W x2 (6 W) Max. 12W x2 (6 W)

PDP 260W (stand-by <2W) AVC 30W, (stand-by <2W)

PAL/SECAM/NTSC4.43/NTSC3.58/PAL60 PAL/SECAM/NTSC4.43/NTSC3.58/PAL60

I/B.G.H/LL' I/B.G.H/LL'

100 (0~99) positions. Plus channel direct (C--/S--) and frequency direct (---.--MHz)

Horizontal freq 24~109KHz / Vertical freq 50~85Hz. Analogue RGB, input voltage 0.7/1.0 V selectable. H/V separate sync (TTL level) *** sound input; common with AV3 or AV4

SCART101 (CVBS/SVHS/LR sound) - AV1 SCART102 (CVBS/RGB/LR sound) - AV2 SCART100 (CVBS/RGB/LR sound) - AV3 COMPONENT (YPbPr/YCbCr/LR sound) - AV4 Front AV (CVBS/SVHS/LR sound) - FRONT CENTRE AUDIO input

32PD3000

p-p

(PDP; 42PD3000E + AVC; AV3000E)

42" (ALSI for mat) Plasma display panel (16:9), resolution 1024(H) x1024 (V)

PDP 360W (stand-by <2W) AVC 30W, (stand-by <2W)

100 (0~99) positions. Plus channel direct (C--/S--) and frequency direct (---.--MHz)

Horizontal freq 24~109KHz / Vertical freq 50~85Hz. Analogue RGB, input voltage 0.7/1.0 V selectable. H/V separate sync (TTL level) *** sound input; common with AV3 or AV4

42PD3000

p-p

PDP: 974 (W) x 256 (D) x 578 (H) mm including

Dimensions

Weight

Remote 2x Hitachi R6P(G) * equivalent 'AA' 2x Hitachi R6P(G) * equivalent 'AA'

monitor stand AVC: 430 (W) x 293 (D) x 121 (H) mm

PDP: 28.7Kg (net) AVC: 3.2Kg (net)

PDP: 1030 (W) x ?? (D) x 636 (H) mm including monitor stand AVC: 430 (W) x 293 (D) x 121 (H) mm

PDP: 40.2Kg (net) AVC: 3.2Kg (net)

AV3000 AVC Unit Service Manual

3. AV MODES

MODE

(sequence)

14/08/2002

PDP

Monitor

SCART1

Output

SCART2

Output

SCART3

Output

LINE

Output

TV RF Tuner-in RF RF RF RF RF RF AV1 SCART1 (CVBS/YC-in) AV1 RF AV1 AV1 AV1 AV1 AV2 SCART2 (CVBS/RGB-in) AV2 RF AV2 AV2 AV2 AV2 AV3 SCART3 (CVBS/RGB-in) AV3 RF AV3 AV3 AV3 AV3

AV4* AV4* AV4* AV4*

AV4 YCbCr/YPbPr AV4 RF

* TDA9321 the same input as FRONT

FRONT FRONT AV (CVBS/YC-in) FRONT RF FRONT FRONT FRONT FRONT

PC PC (PC in) * sound from AV3 or AV4 PC RF FRONT FRONT FRONT FRONT

4. AV BOARD DESCRIPTION

4.1. AVC Block Diagram

AV Controller

CVBS/

YC-out

Local keys (6)

Front AV in

(CVBS+Y/C, L/R)

Head Phone in

(CVBS+RGB, L/R)

Phono

Line Out (L/R)

Power supply

SCART101

(TV out)

SCART102

(Monitor out)

SCART100

(Monitor out)

Y/C Out

CVBS Out

(fixed level)

RF input

for AVC

100-240V

(CVBS+Y/C, L/R, AV Link)

Y/C plug

Front Panel Board

10-WAY

AVC MAIN Board

Control items

Picture

Comb

Sound

Headphone Volume/Balance

OSD/TELETEXT

Advanced OSD

(this OSD cannot be

displayed in PC mode)

19-WAY

Power Supply Board

50-WAY

FC4 Board

Control items

Picture (at FC)

Colour saturation

Tint (hue)

Black stretch

Noise reduction

Wide format

Brightness

PC related

Simple OSD

(for use with PC)

7-WAY AND 9-WAY

CTI

LTI

OSD

DVI-24

DIN 8

PDP Monitor

Control items

Picture

Contrast

White Balance

Sound

Volume

Balance

Bass

Treble

Spatial effect

TruBass

I/Rin

Power supply

for PDP display

100~240V

SPEAKER

Common

SPEAKER

Common

4.2.

Tuner/Video Chroma (Schematic Sheet 1)

VHF/UHF asymmetric type tuner converts RF input signal to IF signal output through pin 11. AGC voltage is supplied at pin 1 from IC100 pin 62. IF output goes through buffer Q101 to SAW filter SAW100 for VIF at pin 2 and 3 of IC100 and to SAW101 for SIF at pin 63 and 64.

AV3000 AVC Unit Service Manual

CRN Type Description Remarks

UV1316/A

TUN100

SAW100 K3953M SAW filter

SAW101 K9456M SAW filter Sound carrier 40.40MHz for standard L

IC100 TDA9321H

TR100 TPWA01B Nominal centre freq. Fn1=6.0MHz and Fn2=6.5MHz TR101 TPWA04B Nominal centre freq. Fn1=5.5MHz and Fn2=5.742MHz X100 Crystal 3.58MHz X101 Crystal 4.43MHz

1G-3 313914716781

Asymmetric type tuner

Video Chroma and Video switch

Supply voltage: +5V at pin 7 and +33V at pin 9 Control by I

Picture carrier 33.90MHz, picture to sound carrier distance 6.5MHz for standard L

Supply voltage : +8V at pin 11 and 48 (AS) Control by I

C, SDA at pin 5 and SCL at pin 4.

C, SDA at pin 47 and SCL at pin 46

4.2.1. IF Demodulator and Video Chroma

Demodulated video signal is output from pin 10 going to sound traps. There are two sound traps, TR100 for I/L signal and TR101 for BG, outputs from which are switched by SOUND-SWITCH from IC301 pin 5.

After group delay correction at pin 13, it is connected to pin 14 where TV picture is supplied into video switch. The TV signal from pin13 is also connected to SCART1 as TV signal output.

Quasi Split Sound converted from SIF input is output at pin 5 to connect with sound decoder IC301. H and V sync pulses are output at pin 60 and 61 to go to FC/MSC for Synchronisation to convert progressive scan. H pulse must be inverted by Q126.

When selecting one of video signal in video switch of IC100, CVBS signal is going to COMB filter if the video is CVBS PAL/NTSC format. Then Y/C separated signal is coming back at pin 28 and 29. The clock must be provided from pin 30. The video or Y/C signal selected pass through video chroma section and finally converted to YUV format at pin 49, 50, 51. IC100 is supplied 4.43MHz and 3.58MHz clock from crystal X100 and X101, which is automatically selected according to the signal received. 2 RGB inputs are also switched at the last stage in IC100. RGB signals are also converted to YUV. Video Switch.

AV3000 AVC Unit Service Manual

Pin No.

14 Input TV signal input

16 Input CVBS - SCT100-TOP (AV2) input 18 Input CVBS - SCT100-BOTTOM (AV3) input 20 Input CVBS/Y - SCT101 (AV1) input 21 Input C - SCT101 (AV1) input 23 Input CVBS/Y - front AV (FRONT) input 24 Input C - front AV (FRONT) input 28 Input Y - from COMB filter 29 Input C - from COMB filter 15 Input SCT100-TOP (AV2) pin 8 detection 17 Control SCT100-BOTTOM (AV3) pin 8 detection

- Control SCT101 (AV1) pin 8 detection is done by micro IC704 pin 28

Description

26 Output Go to COMB filter and phono video output 32 Output Go to micro for TELETEXT decoding 34 Output Go to SCT100-TOP (AV2) and SCT100-BOTTOM (AV3) as monitor video output 20 Output L/L' switch for SAW filter in/out at SAW101 22 Control Micro sw to switch SVHS or CVBS for front AV input

4.3. Sound/AV3 Control (Schematic Sheet 2)

4.3.1. NICAM/A2 Decoder and Sound Control

QSS signal is coming from IC100 to pin 58 through amplifier Q308/Q307. The signal level at pin 58 should be 0.1~0.8V

p-p

Sound output L/R at pin 28 and 29 are connected through amplifier Q310/Q312 for L and Q309/Q311 for R to adjust 500mVrms at PL700 pin 4 and 6 in the condition of AV sound input 500mVrms, FM modulation 54%.

Sound output L/R at pin 28 and 29 are also connected through IC300 TDA7433 and IC303 to headphone. Monitor sound L/R outputs for speaker are connected headphone and phone out. IC300 contributes separate volume control.

Headphone sound L/R controlled its level by IC300 are amplified.

AV3000 AVC Unit Service Manual

CRN

Type

Description Remarks

IC301 MSP3410

X300 Crystal 18.432MHz

IC300 TDA7433 Basic audio processor

IC303 TDA2822D Headphone sound amplifier Supply voltage: +6.5V at pin 2 PL300 Connector for front control PCB IC302

(OPTION)

TDA8440 Future option. Not used for this model.

NICAM/A2 sound decoder and audio switch

Supply voltage: +5V at pin 18 and pin 51 Control by I pin 9

Supply voltage: +8V at pin 17 Control by I2C, SDA at pin 19 and SCL at pin 18

C, SDA at pin 10 and SCL at

4.3.2. Audio Switch

Pin No.

52 Input SCT101 (AV1) sound L input 53 Input SCT101 (AV1) sound R input 49 Input SCT100-TOP (AV2) sound L input

Description

50 Input SCT100-TOP (AV2) sound R input 46 Input SCT100-BOTTOM (AV3) sound L input 47 Input SCT100-BOTTOM (AV3) sound R input 43 Input front AV (FRONT) sound L input 44 Input front AV (FRONT) sound R input 55 Input mono sound input from IC100 37 Output SCT101 (AV1) sound L output 36 Output SCT101 (AV1) sound R output 34 Output SCT100-TOP (AV2) / SCART3 (AV3) sound L output 33 Output SCT100-TOP (AV2) / SCART3 (AV3) sound R output 29 Output Speaker / Headphone/phone sound L output 28 Output Speaker / Headphone/phone sound R output

Output

Control

SOUND SWITCH for trap of TV input signal

AV3000 AVC Unit Service Manual

4.3.3.

TDA7433

Basic Audio Processor (IC300)

Pin No.

6 Input Audio sound L input

5 Input Audio sound R input 16 Output Phono sound L output 15 Output Phono sound R output 14 Output Headphone sound L output 13 Output Headphone sound R output

Description

4.3.4. Front AV Video Switch

PL300 is the connector for the front control PCB. At pin 12 of PL700, CVBS from AV3 is connected. At pin 11 of PL700, Y from AV3SVHS is connected. At pin 9 indication of SVHS connector insertion is supplied to micro IC704 pin 38 and then it controls

micro-sw from pin 22 of IC100 in order to select Y from pin 11 of PL700 (micro-sw=H) or to select CVBS from pin 12 of PL700 (micro-sw=L).

At pin 15 of PL700, C from AV3SVHS is connected to pin 24 of IC100.

4.4.

Interface Board (Schematic Sheet 3)

For Component Input, Progressive Sync Separation and Centre Audio Channel. Sync separation for progressive YPbPr input (50Hz and 60Hz) are carried out at TA1370. Input video

signal is specifically given from AV4 and connected at pin 26 through clamping circuit constituted by QC25~QC28. Sync separation for all input signal other than Progressive input are carried out at TDA9321 (page 1). TA1370 includes switch of sync signal (H and V) between H/V input (pin I and pin2) from TDA9321 and internal sync separation. TA1370 outputs H at pin16 and V at pin 28, which are connected to PSF for FC4 board. There are 2 inputs of the connector for each main and sub. H output at pin 16 on TA1370 is fed to IC10 to shorten H pulse waveform to avoid jittering.

2 inputs, main YUV from IC03 and RGB from micro (TELETXT), are switched and connected to subvideo input for FC4 (IC107). This is enabled when TV+TEXT is selected (SUB TELETEXT) and when PC window is selected (SUB VIDEO)

AV3000 AVC Unit Service Manual

CRN Type Description

Remarks

Sync separation for

IC08 TA1370

Component (progressive) input

Supply voltage: +9V at pin 11 Control by I

XC01 Crystal 50KHz

IC02/IC03 TA1287 YUV/RGB switch

IC04

Supply voltage: +9V at pin 16 Control by DC voltage at pins 9/10/11 and matrix at pin 16

Audio switch, main L/R or AV4 (components input) L/R. main L/R comes from MSP3410 audio switch

Video switch, Front video or AV4 (in case of YCbCr

IC05

BU4066 Analogue switch

normal components), which is connected to TDA9321 for sync separation

Audio switch, Centre sound or AV4 (components

IC06

input) L/R. Output goes to IC04 to switch another audio input

IC07 BU4053

IC09 M62320FP I/O expanders

Analogue Switch for Subvideo

Supply voltage: +9V at pin 16

Supply voltage: +5V at pin 13 Control by I

4.4.1. TA1287

C, SDA at pin 21 and SCL at pin 22

C, SDA at pin 3 and SCL at pin 2

supply voltage: +9V at pin 14

YUV/RGB switch (IC02/IC03)

Input:

Output:

CRN Remarks

IC02 YUV: Main signal IC03 YUV: from IC02 YUV: at pin 1/2/3, Y:1 V

(incl. sync), UV:0.3Vp-p

p-p

RGB: at pin 6/7/8, 0.7Vp-p IC02 Connect to IC03 IC03 Connect to FC4 through buffers YUV: at pin13/14/15, Y:1 V IC02 0V: through Matrix control of RGB input: IC03 Always 1.6V:RGB > YUV

(incl. sync), UV:0.3Vp-p

p-p

(YUV can also input. In this case, matrix control should be through)

IC02 0V: external (Components input) Control: IC03 0V: Video

AV3000 AVC Unit Service Manual

4.4.2.

M62320FP

I/O expanders (IC09)

No.

4 D00 Component video IC02, IC05 Components input Other than components 5 D01 Matrix IC02 RGB --> YUV Through 6 D02 PC IC07 Not PC mode (SUB TEXT) PC mode (SUB video in PCW) 7 D03 OSD-blank IC03 Kill OSD OSD enabled

9 D04 Cinema IC06, IC04 Audio centre not selected Audio centre selected 10 D05 Clamp-source IC05 CP from TA1370 SC from TDA9321 11 D06 TV/TEXT IC03 TEXT (select RGB input) TV 12 D07 N.C.

Description Connect to L H

Name

4.5. Power Circuit/Level Shifter (Schematic Sheet 4)

Power Supply Connector PSP from Power Supply board:

Pin No.

Name

Remarks

1 POWER1

2,3,4 N.C.

5 +5VSTB Stand-by 5V for micro controller circuit 6 GND

7,8 N.C.

9 GND 10 GND 11 +5.5V1 5.5V supply 1 12 GND 13 +9.5V1 9.5V supply 1 14 GND 15 +5.5V2 5.5V supply 2 16 GND 17 +9.5V2 9.5V supply2

Power ON/Stand-by control H: ON, L: Stand-by

18 GND 19 FE+30V 30V supply for tuner

AV3000 AVC Unit Service Manual

4.5.1.

Voltage Regulators

CRN Type

I603 BA06T

IC602 SI-3050LSA

IC603 SI-3050LSA

IC601 SI-3033LSA

Q602 TK11125M

IC604 BA09FP

Remarks

Input +9.5V2 - Output +8V For video chroma circuit (page 1)

Input +5.5V1 - Output +5VFE For tuner (page 1)

Input +5.5V2 - Output +5V For audio processor circuit (page 2), comb filter (page 6)

Input +5VSTB - Output 3.3VSTB For micro-controller circuit

Input +5VSTB - Output 2.5VSTB For micro-controller circuit

Input +9.5V1 - Output +9V For interface circuit (Sheet 3)

4.5.2. Level Shift for Control Buses

CRN Type

Q607 BSS138 3WB-DATA to change from 3V3 to 5V Q603 2SC2412K 3WB-CLOCK to invert with 5V range

Remarks

Q604 2SC2412K FC-ENABLE to invert with 5V range Q605 2SC2412K MSC-ENABLE to invert with 5V range Q614 BSS138 1900TX to change from 3V3 to 5V

4.6. Micro-controller (Schematic Sheet 5)

SCL3v3 and SDA3v3 are converted for 5V operation in Q700, Q701, Q705 & Q706. OSD/TEXT RGB at pin 58/59/60 are synchronised with progressive sync pulses 2H (32KHz) at pin 32 and V (50/60Hz) at pin 33. RGB and BLK are also converted to 5V operation at Q713, Q714, Q715 and IC707. AV link is bi-directional bus from pin 10 of SCT101 made by Q709/D701~D703. For the micro, input and output are separated. The signal level is also converted between 3V3 in micro and 5V for SCART.

See 'Micro-controller Pinout' in the PINOUT DATA section of this manual for microcontroller pin functions. (IC701B Option not fitted.)

CRN Type Description Remarks

IC704 SDA5550 Micro-controller See below X700 Crystal 6MHz

IC700 M24C16W EEPROM (16k-bits)

Supply voltage: +3.3VSTB at pin 8 Control by I at pin 6 and WC3v3 at pin 7

C: SDA3v3 at pin 5 and SCL3v3

IC701 AT49LV002N

K6T1008V2E-GB70000 or

IC703

equivalent

IC705 M62703SL/ML Reset IC for IC704 Supply voltage: +3.3VSTB at pin 1

Flash memory (256Kbytes) for software stored

SRAM, SMT (128kbytes)

Supply voltage: +3.3VSTB at pin 32 Control by address and data buses

AV3000 AVC Unit Service Manual

4.6.1.

SDA5550

Micro-controller (IC704) Supply voltage: +3.3VSTB at pin 8, 40, 75 and 92 and +2.5VSTB at pin 6, 22, 56 and 73.

Control through I

C: SDA3v3 at pin 52 and SCL3v3 at pin 47.

3 wire bus: 3WB-clock3v3 at pin 41 and 3WB-data3v3 at pin 46:

• FC-enable at pin 42

• MSC-enable at pin 43

• OSD enable at pin 44

Control through/by AVlink: output at pin 16 and input at pin 33. RS232C (19200bps): TxD3v3 at pin 32 and RxD3v3 at pin 38. Control by I/R in: at pin 34.

4.6.2.

Front Panel Board Connector

PL702

No.

Name

1 POW LED I Power LED 2 POWER SAVE I POWER2 3 STB+5V I Stand-by 5V power supply 4 GND - GND 5 RM-IN O N.C. 6 A+5V I +5V 7 A/D KEY 2 O Key in 1 8 A/D KEY 1 O Key in 2 9 (BS-LED) - N.C.

10 (MODEM-LED) -

In/Out Functions

At Front Control N.C.

4.7. COMB Filter/SVHS Output (Schematic Sheet 6)

CVBS from IC100 pin 26 is filtered by C800, C801, L800, and C802 and connected to pin 3. Y/C separate signals output from IC101 pin 25/23 are also filtered by Q801 base circuit and Q802 base circuit.

• Y is amplified to adjust the level at Q119/Q120 for return signal to IC100 and SVHS. Y signal output via buffer Q803.

• C is amplified to adjust the level at Q121/Q122 for return signal to IC100 and SVHS. C signal output via buffer Q804.

IC101 requires clock at pin 19 supplied from IC100.

4.7.1.

TC9090AF

COMB filter (IC101) Supply voltage: +5V at pin 15, 18 and 27. Control by I

C: SDA at pin 8 and SCL at pin 9.

AV3000 AVC Unit Service Manual

4.7.2.

SVHS Output Connector

SVHS100

Functions

No.

1,2 GND 4 Y 3 C 5 GND (SW)

Pin No.

Functions

4.8. SCART/FC-MSC Connection (Schematic Sheet 7)

4.8.1. SCART Connectors

Pin No.

1 Sound o/p R Sound o/p R Sound o/p R

2 Sound i/p R Sound i/p R Sound input R

3 Sound o/p L Sound o/p L Sound o/p L

4 GND GND GND Audio common retu rn 5 GND GND GND Blue return

6 Sound i/p L Sound i/p L Sound i/p L

7 N.C. Blue-in Blue-in

8 Switch Switch Switch

9 GND GND GND Green return

10 AVLINK N.C. N.C. AVlink: TTL level

AV1

SCT101

AV2

SCT100-TOP

AV3

SCT100-BOTTOM

General Specification

Audio output R: ≤1KΩ, nominal 0.5Vrms ±3dB, max 2Vrms: 54% modulation in FM/AM

Audio input R: ≥10KΩ, nominal 0.5Vrms, min.0.2Vrms, max 2Vrms

Audio output L: ≤1KΩ, nominal 0.5Vrms 3dB, max 2Vrms: 54% modulation in FM/AM

Audio input L: ≥10KΩ, nominal 0.5Vrms, min.0.2Vrms, max 2Vrms

Blue: 75Ω, 0.7 ±0.1V Function switch: ≥10KΩ, ≤2nF, Level 0: 0~2V, Level

1A: +4.5~7V (16:9), Level 1B: +9.5~12V (4:3)

11 N.C. Green-in Green-in 12 N.C. N.C. N.C. Under consideration 13 GND GND GND Red return 14 GND GND GND Blanking return

15 C in Red-in Red-in

16 N.C. Fast Blanking Fast Blanking 17 GND GND GND Video output return 18 GND GND GND Video input return

19 TV output Monitor o/p Monitor output

20 CVBS/Y in CVBS in CVBS in 21 GND GND GND Common return and contact 8, 10, 12

Green: 75Ω, 0.7 ±0.1V

Red/C: 75Ω, 0.7 ±0.1V (Red), ±3dB at 1 V (C)

Blanking: 75Ω, logical 0 (off): 0~0.4V, logical 1: +1~3V

Video/Y output: 75Ω, 1 V +10dB)

Video input: 75Ω, 1 V

p-p

±3dB (sync 0.3V -3dB +10dB)

p-p

AV3000 AVC Unit Service Manual

Y signal

p-p

±3dB (sync 0.3V -3dB

4.8.2.

26-way Connector

Connection with FC/MSC Board (PL700). Assuming that 1

video signal with 75 ohm terminated is input through SCT100-BOTTOM (AV3):

p-p

• UV are inverted by Q609, Q612, Q610 & Q613 to CbCr (U'V') at pin 25/24 and those are adjusted to the level at 1.4Vp-p

5. AVC POWER BOARD DESCRIPTIONV T

AC INLET

AC in

100~240V

• Y is amplified by Q608/Q611 to adjust the level at 1.4V for signal and 0.6V for sync (2V total) at pin 26

Sound level L and R at pins 6/4 should be 500mVrms on the condition that:

• 500mVrms audio is input through SCT100-BOTTOM (AV3)

• BG FM sound with 54% modulation is received

Connection with FC/MSC Board (PL701).

5.1. AVC Power Board Block Diagram

Primary

Secondary

Over-voltage

Protection

Circuit

Fuse F901

4A/250V

To Frame

GND

R914, Q902~4

Standby Rectifier

D902

Main

Rectifier

D901

Switching Regulator

Fuse F902

2A/250V

I901

Standby

DC/DC

Converter

Relay

Switching

Transformer

T901

Photo-

coupler

I902

H901

S901

(Detect

Voltage-down)

Error

Amp

Driver

Q934, D938

Relay

Q930

Q932

16V

Protection

Circuit

DC/DC Converter

I931, D950, L931

DC/DC Converter

I933, D949, L932

DC/DC Converter

I930, D959, L933

Q931, Q933

DC/DC Converter

(Detect

Voltage-over)

I932

p-p

STBY +5V to AV Board

POWER on/off from AV Board

30V to AV Board

9.5V to AV Board

1.8V to FC Unit

3.3V to AV Board/FC Unit

5.5V to AV Board/FC Unit

5V to FC Unit

5.2.

Switching Regulator, Controller and Power MOS FET

STR-F6668B (I901). Supply voltage at pin 4:

• Over +16V (start operating),

• over +10V (keep operating).

AV3000 AVC Unit Service Manual

Description

No.

1 Feedback input 2 Source of power MOS FET 3 Drain of power MOS FET 4 Power supply input for controller 5 GND

5.3. DC+5V Switching Regulator Module

uPM0518SA (H901). Supply voltage: DC +120~375V at pin 1.

No.

Description

1 DC (+) voltage input

Inputs

Outputs

5 DC (-) voltage input 7 Feedback input 1 8 Feedback input 2 6 DC (-) voltage output 9 DC (+) voltage output

5.4. Photo-coupler

TLP621 (I902).

5.5.

Switching Regulators

SPI-8010A (I930). Supply voltage: DC +8.5~50V at pin 11.

Pin No.

Inputs

Output 7 Switching output

Description

11 DC voltage input 15 Feedback input

SI-8010GL (I931). Supply voltage: DC +8~50V at pin 5.

Pin No.

Inputs

Output 4 Switching output

Description

5 DC voltage input 8 Feedback input 2 Output ON/OFF

AV3000 AVC Unit Service Manual

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