Sharp 21J-FG1RU Manuel utilisateur

CHAPTER 1. SPECIFICATIONS

[1] SPECIFICATIONS ......................................... 1-1

CHAPTER 2. IMPORTANT SERVICE NOTES

[1] IMPORTANT SERVICE NOTES .................... 2-1

CHAPTER 3. ADJUSTMENT PRECAUTIONS

[1] ADJUSTMENT PRECAUTIONS .................... 3-1

[2] ADJUSTMENT ............................................. 3-14

CHAPTER 4. MEMORY MAP

[1] MEMORY MAP .............................................. 4-1

CHAPTER 5. TROUBLE SHOOTING FLOWCHART

[1] TROUBLE SHOOTING FLOWCHART .......... 5-1

CHAPTER 6. SOLID STATE DEVICE BASE DIA-

GRAM

[1] SOLID STATE DEVICE BASE DIAGRAM........ 6-1

CHAPTER 7. CHASSIS LAYOUT

[1] CHASSIS LAYOUT ........................................ 7-1

CHAPTER 8. BLOCK DIAGRAM

[1] BLOCK DIAGRAM: CRT UNIT ...................... 8-1

[2] BLOCK DIAGRAM: HEADPHONE UNIT........8-1

[3] BLOCK DIAGRAM: MAIN UNIT ....................8-2

CHAPTER 9. DESCRIPTION OF SCHEMATIC DIA-

GRAM

[1] DESCRIPTION OF SCHEMATIC DIA-

GRAM............................................................9-1

CHAPTER 10. WAVEFORM

[1] WAVEFORMS .............................................10-1

CHAPTER 11. SCHEMATIC DIAGRAM

[1] SCHEMATIC DIAGRAM: MAIN UNIT.......... 11-1

[2] SCHEMATIC DIAGRAM: CRT UNIT ........... 11-3

[3] SCHEMATIC DIAGRAM: HEADPHONE

UNIT ............................................................ 11-3

CHAPTER 12. PRINTED WIRING BOARD ASSEM-

BLIES

[1] PWB-B: CRT UNIT ......................................12-1

[2] PWB-C: HEADPHONE UNIT ......................12-1

[3] PWB-A: MAIN UNIT ....................................12-2

Parts Guide

SERVICE MANUAL

CONTENTS

SHARP CORPORATION

The chassis in this receiver is partially hot. Use an isolation transformer between the line cord plug and power receptacle, when servicing

this chassis. To prevent electric shock, do not remove cover. No user - serviceable parts inside. Refer servicing to qualified service personnel.

WARNING

Multi 18 Systems

Full Auto Channel Preset and Auto

Channel Skip

100-CH Program Memory

CATV (Hyper Band) Ready

Black Stretch Circuit

On Timer / Off Timer / Reminder Timer

Blue Back Function

Front AV IN & Rear AV IN / OUT Terminals

Front Headphone Jack

Aperture Control Circuit

Auto Fine Tuning

NTSC Colour Comb Filter (AV THRU)

High Contrast Picture

Hotel Mode

Russian and English Languages OSD

White Temperature Select

Component In

Surround Sound Effect

(With Bass / Treble / Balance)

AV Stereo

FEATURES

In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and

only parts identical to those specified should be used.

21J-FG1RU

No. S75L821JFG1RU

COLOUR TELEVISION

Chassis No. GA-4M

21J-FG1RU

MODEL

21J-FG1RU

1 – 1

21J-FG1RU Service Manual

CHAPTER 1. SPECIFICATIONS

[1] SPECIFICATIONS

Convergence ................................................................................................................ Self Convergence System

Focus

...............................................................................................................................

UNI-BI Focusing

Sweep Deflection ..................................................................................................................................... Magnetic

Intermediate Frequencies

Picture IF Carrier ................................................................................................................................. 38.9MHz

Sound IF Carrier Frequency

6.5MHz ............................................................................................................................................. 32.4MHz

6.0MHz ............................................................................................................................................. 32.9MHz

5.5MHz ............................................................................................................................................. 33.4MHz

Colour Sub-Carrier Frequency........................................................................................................... 34.47MHz

Cabinet material ..................................................................................................................................... All Plastics

Specifications are subject to change without prior notice

Aerial Input Impedance

VHF/UHF .......................................................................................................................... 75 ohms Unbalanced

Receiving System ................................................................................. PAL I, B/G, D/K & SECAM B/G, D/K, -K1

Receiving Channel

VHF-Channels ......................................................................................... E2(48.25MHz) thru E12(224.25MHz)

C1(49.75MHz) thru C12(216.25 MHz)

S1(105.25MHz) thru S41(463.25HMz)

UHF-Channels ..................................................................................... E21(471.25MHz) thru E69(855.25MHz)

C13(471.25MHz) thru C57(863.25MHz)

Power Input ..................................................................................................................... 220 ~ 240V AC 50/60 Hz

Power Consumption.........................................................................................................................

....

.......

101W

Audio Power Output Rating .............................................................................................................. 5W (rms) x 2

Voice Coil Impedance .............................................................................................................16 ohms at 400 Hz

.............................................................................................................................

Speaker

12 x 6 cm Elliptic (2 pcs)

Size

Dimensions ..................................................................................................................................... Width: 605mm

Height: 468mm

Depth: 482mm

Weight(approx): 21.7 kg

21J-FG1RU

2 – 1

21J-FG1RU Service Manual

CHAPTER 2. IMPORTANT SERVICE NOTES

[1] IMPORTANT SERVICE NOTES

Maintenance and repair of this receiver should be done by qualified service personnel only.

1. SERVICE OF HIGH VOLTAGE SYSTEM AND PICTURE TUBE

When servicing the high voltage system, remove static charge from it by connecting a 10K ohm resistor in series with an insulated wire (such as a test

probe) between picture tube dag and 2nd anode lead. (AC line cord should be disconnected from AC outlet.)

1) Picture tube in this receiver employs integral implosion protection.

2) Replace with the same type number of picture tube for continued safety.

3) Do not lift picture tube by the neck.

4) Handle the picture tube only when wearing shatterproof goggles and after discharging the high voltage completely.

2. X-RAY

This receiver is designed so that any X-Ray radiation is kept to an absolute minimum. Since certain malfunctions or servicing may produce potentially

hazardous radiation with prolonged exposure at close range, the following precautions should be observed:

1) When repairing the circuit, please make sure do not increase the high voltage of the set to more than 30.0kV (at beam 0µA).

2) To keep the set in a normal operation, please make sure it’s function at 26.5kV ±0.5kV (at beam 1,000µA). The set has been factory - adjusted to

the above-mentioned high voltage.

*If there is a possibility that the high voltage fluctuates as a result of the repairs, never forget to check for such high voltage after the work.

3) Do not substitute a picture tube with unauthorizerd types and/or brands which may cause excessive X-ray radiation.

3. BEFORE RETURNING THE RECEIVER

Before returning the receiver to the user, perform the following safety checks.

1) Inspect all lead dress to make certain that leads are not pinched or that hardware is not lodged between the chassis and other metal parts in the

receiver.

2) Inspect all protective devices such as non-metal control knobs, insulating materials, cabinet backs, adjustment and compartment covers or

shields, isolation resistor-capacity networks, mechanical insulators etc.

21J-FG1RU

3 – 1

21J-FG1RU Service Manual

CHAPTER 3. ADJUSTMENT PRECAUTIONS

[1] ADJUSTMENT PRECAUTIONS

This model's setting are adjusted in two different ways: through the I2C bus control and in the conventional analog manner. The

adjustments via the I2C bus control include preset-only items and variable data.

CAUTION: Make sure TV set in "Normal condition" before switch to Service Mode for adjustment.

1. Setting the service mode by the microprocessor.

i) Press SERVICE key on the remote controller to set the TV set to SERVICE mode position, and the microprocessor is in input

mode. (Adjustment through the I2C bus control).

ii) Press the MENU key on the remote controller to get ready to select the mode (Adjustment mode, Setting mode, Check mode and Option

mode) one by one.

iii) Press the CH DOWN / UP key on the remote controller to select the item in Adjustment mode, Setting mode or Option mode.

iv) Using the VOLUME UP/ DOWN key on the remote controller, the data can be modified. Please wait approximately 200 msec for data storage

in EEPROM before select to another mode.

v) In Check mode the data cannot be changed.

vi) Press the SERVICE key again, it will switch to the NORMAL mode position, and the microprocessor is out of the SERVICE mode.

2. Factory Presetting.

i) Power ON the TV set, press the SERVICE key on the remote controller, then press both the CH UP and VOL UP button on the set

simultaniously for 5secs. Initial values are automatically preset, only when a new EEPROM is used.

ii) The initial data are preset as listed in page 3-7 to 3-12.

iii) Make sure the data need modification or not (Initial data).

Precaution: If haven't done this initialization, it may possibly generate excessive Beam current.

3. For reference please check with memory map RH-IXB226WJZZ (See Page 4-1 ~ 4-16)

21J-FG1RU

3 – 2

1. ADJUSTMENT ITEM

***Below are the adjustment items that should be done, PLS FOLLOW THE PROCEDURE. Otherwise some adjustment items will

not be accurate.

NO *** ADJUSTMENT ITEM EFFECTIVE MODEL REVISION

1BUSSETUP

21J-FG1RU

2 OPTION SET UP

3H-VCO

4VIF-VCO

5 S-TRAP fo

6RF-AGC

7 PURITY ADJ

8 CONVERGENCE ADJ

9 FOCUS ADJ

10 V-SHIFT (50 Hz)

11 H-SHIFT (50 Hz)

12 V-SIZE (50 Hz)

13 SCREEN

14 WHITE BALANCE

15 SUB-BRIGHTNESS

16 SUB-CONTRAST

17 SUB-TINT

18 SUB-COLOR

19 SECAM-OFFSET

20 SIF VCO ADJ

21 BEAM CURRENT CHECK

22 BEAM PROTECTOR CHECK

23 HV PROTECTOR CHECK

24 OTHER PROTECTOR CHECK

25 AV OUT CHECK

26 AV IN CHECK

27 COMPONENT IN CHECK

28 CONTRAST CONTROL CHECK

29 COLOR CONTROL CHECK

30 BRIGHTNESS CONTROL CHECK

31 TINT CONTROL CHECK

32 SHARPNESS CONTROL CHECK

33 CH DISPLAY COLOR CHECK

34 NORMAL DISPLAY CHECK

35 WHITE TEMP CONTROL CHECK

36 COLOR SYSTEM CHECK

37 SURROUND CHECK

38 TREBLE CHECK

39 BASS CHECK

40 BALANCE CHECK

41 SOUND SYSTEM CHECK

42 NOISE MUTE CHECK

43 OSD LANGUAGE QUANTITY CHECK

44 HEAD PHONE CHECK

45 SHOCK TEST CHECK

21J-FG1RU

3 – 3

2. USER DATA IN SERVICE MODE

1) While SERVICE mode ON, EEPROM DATA will switch to the service data. Also, once SERVICE mode OFF, EEPROM will switch back to previous

USER DATA.

2) In the service mode, the user data establish as below,

*1: For each CH, data is same as before switch to Service mode.

The flow of Mode list as following,

* Direct Key-in Mode for Service Items in Service Mode

USER DATA

CONTRAST MAX (60)

COLOUR CENT (0)

BRIGHTNESS CENT (0)

TINT CENT (0)

SHARPNESS CENT (0)

WHITE TEMP STANDARD

S-VOLUME MIN

SURROUND OFF

TREBLE CENT (0)

BASS CENT (0)

BALANCE CENT (0)

BLUE BACK OFF

C SYSTEM AUTO

S SYSTEM *1

RC CODE (HEX) R/C KEY NAME SERVICE-ITEM

80 POS 1 R-C UP (IN SERVICE MODE V00)

40 POS 2 G-C UP (IN SERVICE MODE V00)

C0 POS 3 B-C UP (IN SERVICE MODE V00)

20 POS 4 R-C DOWN (IN SERVICE MODE V00)

A0 POS 5 G-C DOWN (IN SERVICE MODE V00)

60 POS 6 B-C DOWN (IN SERVICE MODE V00)

E0 POS 7 R-D UP (IN SERVICE MODE V00)

10 POS 8 B-D UP (IN SERVICE MODE V00)

50 POS 0 B-D DOWN (IN SERVICE MODE V00)

E4 FLASHBACK R-D DOWN (IN SERVICE MODE V00)

E4 FLASHBACK Y-MUTE (BESIDES OF SERVICE MODE V00)

75 WHITE TEMP UP RF-AGC (V01)

F5 WHITE TEMP DOWN VIF-VC0 (V02)

C2 TUNE DOWN H-VCO (V03)

8D SHARPNESS DOWN SUB-CON (V04)

D6 BALANCE LEFT SUB-COL (V05)

0D SHARPNESS UP SUB-BRIGHT (V06)

36 BALANCE RIGHT SUB-TINT (V07)

46 TREBLE UP SUB-SHP (V08)

C6 TREBLE DOWN SUB-COL-YUV (V09)

26 BASS UP SUB-TINT-YUV (V10)

24 COLOUR UP V-SIZE (V11), V-SIZE60 (V17)

54 BRIGHTNESS DOWN V-SHIFT (V12), V-SHIFT60 (V18)

74 TINT DOWN H-SHIFT (V13), H-SHIFT60 (V19)

66 SURROUND UP SCM-BR (V14)

E6 SURROUND DOWN SCM-BB (V15)

C4 CONTRAST DOWN SUB-VOL (V16)

4C PICTURE S-TRAP-BG (V20)

CC HOLD S-TRAP-I (V21)

2C TEXT S-TRAP-DK (V22)

AC CANCEL S-TRAP-M (V23)

EC SIZE S-TRAP-574 (V24)

80 POS 1 R-C UP YUV (IN SERVICE MODE V25)

40 POS 2 G-C UP YUV (IN SERVICE MODE V25)

C0 POS 3 B-C UP YUV (IN SERVICE MODE V25)

20 POS 4 R-C DOWN YUV (IN SERVICE MODE V25)

21J-FG1RU

3 – 4

1) Please set the MCL to MCL1 as below.

2) After set the MCL , please set the INITIAL SETTING.

INTIAL 5: For Russia ( All Channel Sound System are set to D/K )

A0 POS 5 G-C DOWN YUV (IN SERVICE MODE V25)

60 POS 6 B-C DOWN YUV (IN SERVICE MODE V25)

E0 POS 7 R-D UP YUV (IN SERVICE MODE V25)

10 POS 8 B-D UP YUV (IN SERVICE MODE V25)

50 POS 0 B-D DOWN YUV (IN SERVICE MODE V25)

E4 FLASHBACK R-D DOWN YUV (IN SERVICE MODE V25)

C1 AUTO ADJ FOR V01, V02, V03, V20, V21, V22, V23, V24

CA T-SET

81 SERVICE MODE

MCL1 (HEX AE)

CH-No Fv (MHz) Sound Sys

1 48.25 B/G

2 62.25 B/G

3 77.25 D/K

4 175.25 B/G

5 182.25 B/G

6 183.25 D/K

7 191.25 D/K

8 196.25 B/G

9 199.25 M

10 210.25 B/G

11 224.25 B/G

12 471.25 B/G

13 487.25 I

14 503.25 B/G

15 575.25 B/G

16 583.25 B/G

17 599.25 B/G

18 621.25 M

19 639.25 D/K

20 703.25 B/G

21 735.25 I

22 767.25 B/G

23 815.25 B/G

24 855.25 I

25 855.25 B/G

26 55.25 M

27 83.25 M

28 183.25 M

29 193.25 M

30 217.25 M

31 471.25 M

32 477.25 M

33 693.25 M

34 885.25 M

35 112.25 B/G

36 168.25 B/G

38 294.25 B/G

39 463.25 B/G

41 647.25 B/G

42 663.25 B/G

43 679.25 B/G

44 174.95 B/G

45 175.55 B/G

RC CODE (HEX) R/C KEY NAME SERVICE-ITEM

21J-FG1RU

3 – 5

NOTE: PLL DATA OF ABOVE FREQ SHOULD TAKE THE ACCOUNT OF PIF SETTING IN SERVICE OPTION O04 (VIF) BEFORE STORING INTO

EEPROM

MCL1 (HEX AE)

CH-No Fv (MHz) Sound Sys

21J-FG1RU

3 – 6

3. SHIPPING SETTING & CHECKING

1) The following default data has been factory-set for the E2PROM

follow by INITIAL DATA selected.

FACTORY SETTING BY MODEL

(Reference: Geomagnetism Adjustment)

ITEMS DATA SETTING

LAST POWER ON

LAST TV/AV MODE TV MODE

LAST POSITION CH 1

FLASHBACK CHANNEL CH 1

1/2 DIGIT ENTRY 2 DIGIT ENTRY

VOLUME 0 (Min)

BLUE BACK OFF

OFF TIMER --:--

ON TIMER --:--

ON TIMER POSITION --

ON TIMER VOLUME --

REMINDER --:--

AFT ALL CH ON

COLOR SYSTEM ALL CH AUTO

SKIP ALL CH OFF

CONTRAST 60

COLOR 0

BRIGHTNESS 0

TINT 0

SHARPNESS 0

WHITE TEMP 0

SURROUND OFF

TREBLE 0

BASS 0

BALANCE 0(CENTER)

INITIAL LANGUAGE SOUND SYSTEM

1 CHINESE D/K

2 CHINESE I

3ENGLISH B/G

4 ARABIC B/G

5 RUSSIAN D/K

6 MALAY B/G

7 FRENCH D/K

MODEL MAGNETIC FIELD(V, H) nT BACKGROUND LANG. S-SYS LANG QTY

RUSSIA 45000 20000 7500°K RUSSIAN D/K 2

*NOTE FOR OSD TYPE:

2: ENGLISH/RUSSIAN

21J-FG1RU

3 – 7

**AFTER INITIALIZED THE EEPROM (REFER TO FACTORY PRESETTING), READ DATA FROM EEPROM ADDRESS 00H ~ 03H,AND COM-

PARE TO THE LIST BELOW, IF DIFFERENT, INITIALIZE THE EEPROM.

*** There are four stages of service mode data. First stage data from V00~V31 (Adjustment Mode).

To go into second stage of service mode data, press MENU key.Second stage data from F01~F142 (Setting Mode).

To go into third stage of service mode data, press MENU key.Third stage data is Check Mode.

To go into fourth stage of service mode data, press MENU key.Fourth stage data from O01~O31 (Option Mode).

ADDRESS DATA ADDRESS DATA

00H: 7BH 02H: 72H

01H: 72H 03H: 76H

ADJUSTMENT MODE (FIRST STAGE)

EEPROM ITEMS OSD DATA LENGTH INITIAL DATA FIX/ADJ/AUTO REMARK

R-DRIVE V00 0~127 63 ADJ PLS REFER TO

B-DRIVE V00 0~127 63 ADJ ADJ ITEM FOR

R-CUT V00 0~255 127 ADJ SCREEN AND

G-CUT V00 0~255 127 ADJ WHITE BALANCE

B-CUT V00 0~255 127 ADJ

RF-AGC V01 0~127 50 AUTO

VIF-VCO V02 0~63 31 AUTO

H-VCO V03 0~7 3 AUTO

SUB-CONTRAST V04 0~127 100 ADJ

SUB-COLOR V05 0~127 63 ADJ

SUB-BRIGHT V06 0~255 127 ADJ

SUB-TINT V07 0~127 63 ADJ

SUB-SHARPNESS V08 0~63 43 *FIX BUS SETUP

SUB-COLOR -YUV V09 0~127 90 *FIX BUS SETUP

SUB-TINT-YUV V10 0~127 63 FIX

V-SIZE 50 Hz V11 0~63 38 ADJ

V-SHIFT 50 Hz V12 0~7 3 ADJ

H-SHIFT 50 Hz V13 0~31 9 ADJ

SECAM-BR V14 0~63 37 ADJ

SECAM-BB V15 0~63 22 ADJ

SUB-VOL V16 0~60 60 FIX

V-SIZE 60 Hz V17 -31~0~+31 0 FIX IF NECESSARY, ADJ

V-SHIFT 60 Hz V18 -7~0~+7 -1 FIX IF NECESSARY, ADJ

H-SHIFT 60 Hz V19 -15~0~+15 +2 FIX IF NECESSARY, ADJ

S-TRAP (BG) V20 0~15 7 AUTO

S-TRAP (I) V21 0~15 7 AUTO

S-TRAP (DK) V22 0~15 7 AUTO

S-TRAP (M) V23 0~15 7 AUTO

S-TRAP (5.74) V24 0~15 7 AUTO

CUTOFF/BKGD YUV V25

R-DRI YUV V25 0~127 63 FIX

B-DRI YUV V25 0~127 63 FIX

R-CUT YUV V25 0~255 127 FIX

G-CUT YUV V25 0~255 127 FIX

B-CUT YUV V25 0~255 127 FIX

SUB-CON YUV V26 0~127 100 FIX

SUB-BRGHT YUV V27 0~255 127 FIX

VS-CORRECT V28 0~63 32 FIX ONLY FOR M61266

VC-CORRECT OFFSET V29 -13~+13 0 FIX ONLY FOR M61266

V LINEARITY V30 0~63 32 FIX ONLY FOR M61266

V LINEARITY OFFSET V31 -13~+13 0 FIX ONLY FOR M61266

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