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AV-21F1P
SERVICE MANUAL
COLOR TELEVISION
BASIC CHASSIS
GA2
AV-21F1P(PH)
- +
CONTENTS
s SPECIFICATIONS ........................................................................................................................... 2
s SAFETY PRECAUTIONS ................................................................................................................ 3
s FEATURES ...................................................................................................................................... 4
5 OPERATING INSTRUCTIONS (APPENDED) .............................................................................. 1-1
s SPECIFIC SERVICE INSTRUCTIONS ............................................................................................ 4
s SERVICE ADJUSTMENTS ............................................................................................................ 10
5 STANDARD CIRCUIT DIAGRAM (APPENDED) ......................................................................... 2-1
s PARTS LIST ................................................................................................................................... 27
No. 56033
COPYRIGHT © 2000 VICTOR COMPANY OF JAPAN, LTD.
No. 56033 1
Jul. 2000
AV-21F1P
SPECIFICATIONS
Item Content
Dimensions (W × H × D) 619mm × 458mm × 486.5mm
Mass 22kg
TV RF System CCIR (M) & (N)
Color System NTSC / PAL-M / PAL-N
TV Receiving Channel and Frequency
VHF (VL) Band (02 ~ 06) 54MHz ~ 88MHz
VHF (VH) Band (07 ~ 13) 174MHz ~ 216MHz
UHF Band (14 ~ 69) 470MHz ~ 806MHz
CATV Receiving Channel and Frequency
Low Band (02 ~ 06)
High Band (07 ~ 13)
Mid Band (14 ~ 22)
Super Band (23 ~ 36) (54MHz ~ 804MHz)
Hyper Band (37 ~ 64)
Ultra Band (65 ~ 94, 100 ~ 125)
Sub Mid Band (01, 96 ~ 99)
TV/CATV Total Channel 180 Channels
Intermediate Frequency
VIF Carrier 45.75MHz
SIF Carrier 41.25MHz (4.5MHz)
Color Sub Carrier Frequency NTSC: 3.579545MHz
PAL-M: 3.57561149MHz
PAL-N: 3.58205625MHz
Aerial Input Terminal 75 Unbalanced
Power Input Rating: AC110 ~ 240V, 50/60Hz Operating: AC90 ~ 260V, 50/60Hz
Power Consumption 66W
Picture Tube Visible size : 51cm measured diagonally
High Voltage 26.5kV ± 1kV (at zero beam current)
Speaker 6cm × 12 cm Oval type × 2
Audio Output 2W (Monaural)
Input Video 1Vp-p, 75
Audio 500mVrms (-4dBs), High impedance
Output Video 1Vp-p, 75
Audio 500mVrms (4dBs), Low impedance
Headphone Jack Stereo mini jack (3.5ø)
Remote Control Unit RM-C372-1H (Battery size : AA/R06/UM-3 × 2)
Design & specifications are subject to change without notice.
2 No. 56033
AV-21F1P
SAFETY PRECAUTIONS
1. The design of this product contains special hardware, many 8. When service is required, observe the original lead dress. Ex-
circuits and components specially for safety purposes. For con- tra precaution should be given to assure correct lead dress in
tinued protection, no changes should be made to the original the high voltage circuit area. Where a short circuit has occurred,
design unless authorized in writing by the manufacturer. Re- those components that indicate evidence of overheating should
placement parts must be identical to those used in the original be replaced. Always use the manufacturer's replacement com-
circuits. Service should be performed by qualified personnel ponents.
only.
9. Isolation Check
2. Alterations of the design or circuitry of the products should not (Safety for Electrical Shock Hazard)
be made. Any design alterations or additions will void the After re-assembling the product, always perform an isolation
manufacturer's warranty and will further relieve the manufac- check on the exposed metal parts of the cabinet (antenna ter-
turer of responsibility for personal injury or property damage minals, video/audio input and output terminals, Control knobs,
resulting therefrom. metal cabinet, screw heads, earphone jack, control shafts, etc.)
to be sure the product is safe to operate without danger of elec-
3. Many electrical and mechanical parts in the products have spe- trical shock.
cial safety-related characteristics. These characteristics are of- (1) Dielectric Strength Test
ten not evident from visual inspection nor can the protection The isolation between the AC primary circuit and all metal parts
afforded by them necessarily be obtained by using replace- exposed to the user, particularly any exposed metal part hav-
ment components rated for higher voltage, wattage, etc. Re- ing a return path to the chassis should withstand a voltage of
placement parts which have these special safety characteris- 3000V AC (r.m.s.) for a period of one second.
tics are identified in the parts list of Service manual. Electrical (. . . . Withstand a voltage of 1100V AC (r.m.s.) to an appliance
components having such features are identified by shad- rated up to 120V, and 3000V AC (r.m.s.) to an appliance rated
ing on the schematics and by (!) on the parts list in Ser- 200V or more, for a period of one second.)
vice manual. The use of a substitute replacement which does This method of test requires a test equipment not generally
not have the same safety characteristics as the recommended found in the service trade.
replacement part shown in the parts list of Service manual may (2) Leakage Current Check
cause shock, fire, or other hazards. Plug the AC line cord directly into the AC outlet (do not use a
line isolation transformer during this check.). Using a "Leakage
4. Don't short between the LIVE side ground and ISOLATED Current Tester", measure the leakage current from each ex-
(NEUTRAL) side ground or EARTH side ground when re- posed metal part of the cabinet, particularly any exposed metal
pairing. part having a return path to the chassis, to a known good earth
Some model's power circuit is partly different in the GND. The ground (water pipe, etc.). Any leakage current must not exceed
difference of the GND is shown by the LIVE : (#) side GND, 0.5mA AC (r.m.s.).
the ISOLATED (NEUTRAL) : (") side GND and EARTH : ($) However, in tropical area, this must not exceed 0.2mA AC
side GND. Don't short between the LIVE side GND and ISO- (r.m.s.).
LATED (NEUTRAL) side GND or EARTH side GND and never q Alternate Check Method
measure with a measuring apparatus (oscilloscope etc.) the Plug the AC line cord directly into the AC outlet (do not use a
LIVE side GND and ISOLATED (NEUTRAL) side GND or line isolation transformer during this check.). Use an AC volt-
EARTH side GND at the same time. meter having 1000 ohms per volt or more sensitivity in the fol-
If above note will not be kept, a fuse or any parts will be bro- lowing manner. Connect a 1500 10W resistor paralleled by a
ken. 0.15µF AC-type capacitor between an exposed metal part and
a known good earth ground (water pipe, etc.). Measure the AC
5. If any repair has been made to the chassis, it is recommended voltage across the resistor with the AC voltmeter. Move the
that the B1 setting should be checked or adjusted (See AD- resistor connection to each exposed metal part, particularly any
JUSTMENT OF B1 POWER SUPPLY). exposed metal part having a return path to the chassis, and
measure the AC voltage across the resistor. Now, reverse the
6. The high voltage applied to the picture tube must conform with plug in the AC outlet and repeat each measurement. Any volt-
that specified in Service manual. Excessive high voltage can age measured must not exceed 0.75V AC (r.m.s.). This corre-
cause an increase in X-Ray emission, arcing and possible com- sponds to 0.5mA AC (r.m.s.).
ponent damage, therefore operation under excessive high volt- However, in tropical area, this must not exceed 0.3V AC (r.m.s.).
age conditions should be kept to a minimum, or should be pre- This corresponds to 0.2mA AC (r.m.s.).
vented. If severe arcing occurs, remove the AC power immedi-
ately and determine the cause by visual inspection (incorrect AC VOLTMETER
installation, cracked or melted high voltage harness, poor sol- (HAVING 1000/V,
dering, etc.). To maintain the proper minimum level of soft X- OR MORE SENSITIVITY)
Ray emission, components in the high voltage circuitry includ-
ing the picture tube must be the exact replacements or alterna-
tives approved by the manufacturer of the complete product.
7. Do not check high voltage by drawing an arc. Use a high volt- 0.15µF AC-TYPE
age meter or a high voltage probe with a VTVM. Discharge the
picture tube before attempting meter connection, by connect- PLACE THIS PROBE
ing a clip lead to the ground frame and connecting the other ON EACH EXPOSED
1500 10W METAL PART
end of the lead through a 10k 2W resistor to the anode but-
ton. GOOD EARTH GROUND
No. 56033 3
AV-21F1P
FEATURES
q New chassis design enables use of an interactive on-screen control.
q Wide range voltage for AC power input.
q With AUDIO / VIDEO INPUT & OUTPUT terminals.
q MUTING button can reduce the audio level to zero instantly.
q Functional remote control to operate TV set (for channel select, volume control, power ON/OFF, etc.) from a distance.
q I2C bus is used to control V/C & DEF 1 chip IC, tuner, etc.
q By means of AUTO PROGRAM, the TV stations can be selected automatically and the TV channels can also be rearranged
automatically.
q Built-in RETURN +.
q Built-in RTC (real-time clock) enables ON/OFF timer settings.
SPECIFIC SERVICE INSTRUCTIONS
DISASSEMBLY PROCEDURE
REMOVING THE REAR COVER
1. Unplug the AC power cord.
2. Remove the 6 screws marked "A" and 2 screws marked "B".
3. Withdraw the rear cover backward.
REMOVING THE MAIN PW BOARD
q After removing the rear cover.
1. Slightly raise both sides of the Main PW Board by hand and
withdraw it backward.
(If necessary, take off the wire clamp, connectors etc.)
REMOVING THE SPEAKER
q After removing the rear cover.
1. Remove the 2 screws marked "C".
2. Follow the same step for removing the other hand speaker.
CHECKING THE MAIN PW BOARD
To check the back side of the Main PW Board, follow the next steps.
1. Pull out the Main PW Board. (Refer to "REMOVING THE MAIN
PW BOARD".)
2. Erect the Main PW Board vertically so that you can easily check
its back side.
CAUTION:
q When erecting the Main PW Board, be careful so that there will
be no contacting with other PW Board.
q Before turning on power, make sure that all connectors are prop-
erly connected.
WIRE CLAMPING AND CABLE TYING
1. Be sure to clamp the wire.
2. Never remove the cable tie used for tying the wires together.
Should it be inadvertently removed, be sure to tie the wires with
a new cable tie.
4 No. 56033
AV-21F1P
FRONT CABINET
SPEAKER
C (×2)
19
CRT SOCKET PWB
(Within MAIN PWB)
DY01
18
MAIN PWB
SPEAKER C
(×2)
REAR COVER
B (×2)
A (×6)
No. 56033 5
AV-21F1P
REPLACEMENT OF MEMORY IC
1. MEMORY IC (5) Receive channel setting
This TV uses the following memory IC. Refer to the OPERATING INSTRUCTIONS and set the
Memory IC: IC1704 on MAIN PW Board receive channels (channels preset).
The memory IC memorizes data for correctly operating the
video and deflection circuits. When replacing the memory IC, (6) User settings
be sure to use the same type IC written with the initial values Check the user setting items in Tables 2-1 and 2-2, and if
of data. In other words, use the specific IC listed in "PRINTED setting value is different, set the correct value.
WIRING BOARD PARTS LIST". For its mounting location, re- For setting, refer to the OPERATING INSTRUCTIONS.
fer to "ADJUSTMENT LOCATIONS".
(7) Setting of SERVICE MENU
2. PROCEDURE FOR REPLACING MEMORY IC Verify the setting for each setting item in the SERVICE
MENU. (See Table 3.) If readjustment is necessary, per-
(1) Power off form adjustment referring to "SERVICE ADJUSTMENTS".
Switch the power off and unplug the power cord from the
wall outlet.
(2) Replacing the memory IC
Replace the memory IC with new one. Be sure to use the
memory IC written with the initial data values.
SERVICE MENU
(3) Power on PICTURE
VIDEO STATUS OTHERS
Plug the power cord into the wall outlet and switch the LOW LIGHT HIGH LIGHT
power on. RF AFC CHK
VCO (CW) I2C BUS CTRL
(4) Check and setting of SYSTEM CONSTANT SET: SELECT BY EXIT BY
1) Press the DISPLAY key and the VIDEO STATU key on OPERATE BY EXIT
IT
the remote control unit simultaneously.
The SERVICE MENU screen will be displayed. (See
Fig. 1
Fig. 1.)
2) In the SERVICE MENU, again press the DISPLAY key
and the VIDEO STATU key simultaneously. Then, the
SYSTEM CONSTANT SET screen will be displayed. SYSTEM CONSTANT-I
(See Fig. 2.)
3) Check whether the setting values of the SYSTEM CON-
STANT SET are the same as those indicated in Table
1. If the value is different, select the setting item with SYSTEM CONSTANT
VIDEO : 1
the MENU 1/4 key, and set the correct value with the
AUDIO : MONO
MENU 2/3 key. VARI. OUT : NO
(The selected value will be stored in memory when the GAME : YES
CINEMA : YES
MENU 2/3 key is released.)
4) Press the EXIT key twice to return to the normal screen. SELECT BY EXIT BY
OPERATE BY EXIT
IT
NAME OF REMOTE CONTROL KEYS
SYSTEM CONSTANT-II
DISPLAY TV/VIDEO POWER
DISPLAY
PICTURE SYSTEM CONSTANT
BOOSTER
CCD : YES
CLOSED RETURN+ : YES
CAPTION 1 2 3 SURROUND : NO
SLEEP
TIMER 4 5 6
VVVVVVVV VVVVV
VIDEO SELECT BY EXIT BY
STATUS 7 8 9 OPERATE BY EXIT
IT
VIDEO STATUS
COLOUR
SYSTEM 100+ 0 RETURN+
EXIT MENU Fig. 2
EXIT
MENU
MENU
MUTING MENU
MENU
CHANNEL - VOLUME +
6 No. 56033
AV-21F1P
SETTING OF SYSTEM CONSTANT SET
Table 1
Setting item Setting contents Setting value
VIDEO 1 2 1
AUDIO MONO PH. MONO MTS MONO
VARI. OUT YES NO NO
GAME YES NO YES
CINEMA YES NO YES
CCD YES NO YES
RETURN+ YES NO YES
SURROUND YES NO NO
USER SETTING VALUES
q Setting of Function
Table 2-1
Setting item Setting value Setting item Setting value
MAIN POWER OFF DISPLAY OFF
SUB POWER ON SLEEP TIMER 0
CHANNEL CH 02 VIDEO STATUS STANDARD
CHANNEL PRESET Refer to OPERATING INSTRUCTIONS CLOSED CAPTION OFF (CC1/T1)
VOLUME 10 COLOR SYSTEM AUTO
TV/VIDEO TV PICTURE BOOSTER OFF
q Setting of Menu
Table 2-2
Setting item Setting value Setting item Setting value
TINT CENTER SET LOCK CODE Unnecessary to set
COLOR CENTER CHILD LOCK OFF
PICTURE CENTER AUTO TUNER SETUP AIR
BRIGHT CENTER NOISE MUTING OFF
DETAIL CENTER BACKGROUND BLACK
SET CLOCK Unnecessary to set CLOSED CAPTION CC1 / T1
ON/OFF TIMER NO LANGUAGE ENG.
CHANNEL SUMMARY Unnecessary to set
No. 56033 7
AV-21F1P
SERVICE MENU SETTING ITEMS
Table 3
Service menu Setting item Service menu Setting item
PICTURE 1. PICTURE 54. H POS. 60
2. BRIGHT 55. H BLK. 60 Do not adjust.
3. COL. PALM 56. V POS. 60
4. COL. PALN 57. V SIZE60
5. COL. NTSC 58. V S CR60
6. TINT 59. V LIN. 60
7. TV DTL 60. RF AGC
8. EXT PIC.
9. EXT BRI. VIDEO STATUS TINT
10. EXT COL. COLOR
11. EXT TINT PICTURE
12. EXT DTL BRIGHT
13. P/N KILL DETAIL Do not adjust.
14. Y S CONT G DRIVE
15. TV Y-DL B DRIVE
16. EXT Y-DL R CUT.
17. WPL SW G CUT.
18. Y GAMMA B CUT.
19. P/N G P.
OTHERS 1. OSD HP
20. COL. L SW
2. OSD VP Do not adjust.
21. COL. LMT.
3. H-CK SW
22. PN C. ATT
23. OFST. SW LOW LIGHT R CUTOFF
24. OFST. B-Y G CUTOFF
25. OFST. R-Y B CUTOFF
Do not adjust.
26. C-TOF SW
27. TV T FO HIGH LIGHT G DRIVE
28. TV T Q B DRIVE
29. EXT T FO
30. EXT T Q RF AFC CHK RF AFC Do not adjust.
31. C-TRAP FINE
32. C-TR. FO
VCO (CW) IF VCO (CW) adjustment mode
33. C-TRAP Q
34. FIX B/W
35. APA P. FO
36. DC TRAN.
I2C BUS CTRL I2C BUS
37. B. ST. SW
(Fixed to ON state.)
38. B. ST. PO.
39. ABL GAIN
40. ABL PO.
41. HALF T.
42. DRV G SW
43. NT. COMB
44. COIN DET
45. NOISE L.
46. VCD MODE
47. V AGC SP
48. H POS. 50
49. H BLK. 50 Do not adjust.
50. V POS. 50
51. V SIZE50
52. V S CR50
53. V LIN. 50
8 No. 56033
AV-21F1P
REPLACEMENT OF CHIP COMPONENT
s CAUTIONS
1. Avoid heating for more than 3 seconds.
2. Do not rub the electrodes and the resist parts of the pattern.
3. When removing a chip part, melt the solder adequately.
4. Do not reuse a chip part after removing it.
s SOLDERING IRON
1. Use a high insulation soldering iron with a thin pointed end
of it.
2. A 30W soldering iron is recommended for easily removing
parts.
s REPLACEMENT STEPS
1. How to remove Chip parts 2. How to install Chip parts
q Resistors, capacitors, etc. q Resistors, capacitors, etc.
(1) As shown in the figure, while pushing the chip part with twee- (1) Apply solder to the pattern as indicated in the figure.
zers, alternately melt the solder at its each end.
(2) Grasp the chip part with tweezers and place it on the solder.
Then heat and melt the solder at both ends of the chip part.
(2) Shift the chip part with tweezers and remove it.
q Transistors, diodes, variable resistors, etc. q Transistors, diodes, variable resistors, etc.
(1) Apply extra solder to each lead. (1) Apply solder to the pattern as indicated in the figure.
(2) Grasp the chip part with tweezers and place it on the solder.
(3) First solder lead A as indicated in the figure.
SOLDER SOLDER
A
(2) As shown in the figure, while pushing the chip part with twee- B
zers, alternately melt the solder at its each lead. Then, shift
and remove the chip part.
C
(4) Then solder leads B and C.
A
B
C
Note : After removing the part, remove remaining solder from
the pattern.
No. 56033 9
AV-21F1P
SERVICE ADJUSTMENTS
BEFORE STARTING SERVICE ADJUSTMENT
1. There are 2 ways for adjusting this TV: One is with the 7. Preparation for adjustment (presetting):
REMOTE CONTROL UNIT and the other is the conventional Unless otherwise specified in the adjustment items, preset the
method using adjustment parts and components. following functions with the remote control unit.
2. The setting (adjustment) using the REMOTE CONTROL
UNIT is made on the basis of the initial setting values. The
setting values which adjust the screen to the optimum con-
dition can be different from the initial setting values. Function Setting value
3. Make sure that connection is correctly made to AC power source. VIDEO STATUS STANDARD
4. Turn on the power of the TV and measuring instrument for warm- TINT, COLOR, PICTURE, BRIGHT
ing up for at least 30 minutes before starting adjustment. CENTER
DETAIL
5. If the receive or input signal is not specified, use the most ap-
propriate signal for adjustment.
6. Never touch parts (such as variable resistors, transformers and
capacitors) not shown in the adjustment items of this service
adjustment.
MEASURING INSTRUMENT ADJUSTMENT/CHECK ITEMS
AND FIXTURES
Adjustment/Check item Page
1. DC voltmeter (or Digital voltmeter)
2. Oscilloscope
B1 POWER SUPPLY Check 16
3. Signal generator (Pattern generator) IF VCO Adjustment 16
[PAL / SECAM / NTSC]
4. Remote control unit
RF AGC Adjustment 16
5. TV audio multiplex signal generator FOCUS Adjustment 16
6. Frequency counter
DEFLECTION CIRCUIT Adjustment 17
VIDEO/CHROMA CIRCUIT Adjustment 18
VIDEO STATUS Adjustment 21
X-RAY PROTECTION Check 22
PURITY, CONVERGENCE Adjustment 23
BASIC OPERATION IN SERVICE MENU
1. TOOL OF SERVICE MENU OPERATION
Operate the SERVICE MENU with the remote control unit.
2. SERVICE MENU ITEMS
With the SERVICE MENU, various settings (adjustments) can be made, and they are broadly classified in the following items of settings:
q PICTURE ..................... For entering/adjusting the setting values (adjustment values) of the VIDEO/CHROMA and DEFLECTION cir-
cuits.
q VIDEO STATUS .......... For setting the values for CINEMA and GAME.
q OTHERS ...................... For setting the values of other items.
q LOW LIGHT ................. For setting the values of WHITE BALANCE circuit.
q HIGH LIGHT ................ For setting the values of WHITE BALANCE circuit .
q RF AFC CHK ............... For checking the RF AFC circuit. (Do not adjust.)
q VCO (CW) ................... For adjusting the IF circuit.
q I2C BUS CTRL ............. I2C BUS ON/OFF CONTROL. (Fixed to ON.)
10 No. 56033
AV-21F1P
3. BASIC OPERATION IN SERVICE MENU SERVICE MENU
NOTE: In each menu screen, key operation guide will appear
at the bottom, which will help your menu operation.
SERVICE MENU
(1) How to enter SERVICE MENU PICTURE
VIDEO STATUS OTHERS
Press the DISPLAY key and the VIDEO STATUS key on the LOW LIGHT HIGH LIGHT
remote control unit simultaneously. RF AFC CHK
The SERVICE MENU screen will be displayed. (See Fig. 1.) VCO (CW) I2C BUS CTRL
· To return to the previous screen, press the EXIT key on
SELECT BY EXIT BY
the remote control unit. OPERATE BY EXIT
IT
(2) Selection of Sub Menu Screen
See Fig. 3, menu diagram, on the next page. SERVICE MENU items
1) Press the MENU 1/4 key on the remote control unit to
select an item in the SERVICE MENU screen.
2) Enter the Sub Menu as follows: Key Operation Guide
q Entering "PICTURE" and "OTHERS" Sub Menus 1/4 key: Press to select an item.
Press the MENU 2/3 key in the SERVICE MENU 2/3 key: Press to enter the SUB MENU screen of the
screen. Then, the Screen A shown in Fig. 3 on the selected item.
next page will appear. EXIT key: Press to return to the previous screen.
In the Screen A, press the MENU 1/4 key to enter
the Sub Menu screen. Fig. 1 SERVICE MENU
q Entering other than above Sub Menus
Press the MENU 2/3 key in the SERVICE MENU
screen. Then, the Sub Menu screen will directly ap-
SERVICE MENU SUB MENU
pear.
PICTURE
· To return to the previous screen, press the EXIT key on
the remote control unit. VIDEO STATUS OTHERS
LOW LIGHT HIGH LIGHT
RF AFC CHK
VCO (CW) I2C BUS CTRL
(3) Method of Setting in the Sub Menu Screen SUB MENU: PICTURE
* Once the setting values are set, they are automatically
memorized.
1) PICTURE, VIDEO STATUS, OTHERS
1/4 key: Press to select an item in the Sub Menu.
2/3 key: Press to select the value of the selected item.
EXIT key: Press to return to the previous screen. 1. PICTURE VVV
VVVVV VVVV
VIDEO STATUS key: In the VIDEO STATUS sub menu
SELECT BY EXIT BY
screen, press to switch between VIDEO STA- OPERATE BY EXIT
IT
TUS-GAME and VIDEO STATUS-CINEMA.
2) LOW LIGHT, HIGH LIGHT SUB MENU item
Setting will be done by using the numeral key on the re- Setting Value
mote control unit. 1/4 key: Press to select an item.
2/3 key: Press to set the value.
3) RF AFC CHK EXIT key: Press to return to the previous screen.
Do not adjust.
Fig. 2 SUB MENU example (PICTURE)
4) VCO (CW)
Setting will be done by adjusting the CW TRANSF. (T111)
on the Main PWB.
5) I2C BUS CTRL
Do not adjust. This item should always be fixed to ON to
normally operate the TV set.
(4) Release of SERVICE MENU
After completing the setting, repeatedly press the EXIT key
until the screen returns to the normal screen.
Fig. 2
No. 56033 11
AV-21F1P
SERVICE MENU AND SUB MENU SCREENS
SERVICE MENU (MAIN MENU) SCREEN A SUB MENU: PICTURE
SERVICE MENU
PICTURE
VIDEO STATUS OTHERS
LOW LIGHT HIGH LIGHT
RF AFC CHK
VCO (CW) I2C BUS CTRL 1. PICTURE VVV
VVVVV VVVV
SELECT BY EXIT BY
SELECT BY EXIT BY SELECT BY EXIT BY
OPERATE BY EXIT
IT
OPERATE BY EXIT
IT EXIT
IT
SUB MENU: HIGH LIGHT SUB MENU: OTHERS
HIGH LIGHT 1. OSD HP VVV
VVV VVV
EXIT BY SELECT BY EXIT BY
EXIT
IT OPERATE BY EXIT
IT
SUB MENU: RF AFC CHK
RF AFC ON
FINE VVV
SELECT BY EXIT BY
OPERATE BY EXIT
IT
Do not adjust.
SUB MENU: VIDEO STATUS
SUB MENU: VCO (CW) CINEMA GAME
CINEMA GAME
TOO HIGH TINT VVV G DRIVE VVV TINT VVV G DRIVE VVV
ABOVE REFERENCE COLOR VVV B DRIVE VVV COLOR VVV B DRIVE VVV
BELOW REFERENCE PICTURE VVV R CUT. VVV Press PICTURE VVV R CUT. VVV
TOO LOW BRIGHT VVV G CUT. VVV BRIGHT VVV G CUT. VVV
VIDEO
DETAIL VVV B CUT. VVV DETAIL VVV B CUT. VVV
SYNC : YES STATUS
EXIT BY SELECT BY EXIT BY Key. SELECT BY EXIT BY
EXIT OPERATE BY EXIT
IT OPERATE BY EXIT
IT
IT
SUB MENU: I 2 C BUS CTRL SUB MENU: LOW LIGHT
BRIGHT VVV
I2C BUS ON VVV VVV VVV
EXIT BY EXIT BY
OPERATE BY EXIT
IT BRIGHT EXIT
IT
Fixed to ON state.
Fig. 3
12 No. 56033
AV-21F1P
ADJUSTMENT LOCATIONS
MAIN PWB
ON FRONT
TIMER
POWER VOL CH MENU
+ - + -
REMOCON
RECEIVER IC701
PW
F901 IC704 S
MEMORY
IC
DEG S901
POWER SW T
IC201
VCO
T111 HV
TU001
X
3 1
U HVT
C
3 1 B1
UPPER : FOCUS
1 Pin TP-91(B1)
LOWER : SCREEN
2 Pin NC
3 Pin TP-E (")
CRT SOCKET PWB
(SOLDER SIDE)
TOP
TP-47B
T
U
CRT EARTH
E1 (BRAIDED ASS'Y)
TP-E
No. 56033 13
AV-21F1P
INITIAL SETTING VALUE OF SERVICE MENU
The setting (adjustment) using the remote control unit is made on the basis of the initial setting values.
The setting values which adjust the screen to the optimum condition can be different from the initial setting values.
q Do not change the initial setting values of the setting (adjustment) items not listed in "ADJUSTMENTS".
q PICTURE
5 The following four setting items in the video mode and TV mode are linked each other.
Video mode: 8. EXT PIC., 9. EXT BRI., 10. EXT COL. and 11. EXT TINT
TV mode: 1. PICTURE, 2 . BRIGHT, 5. COL. NTSC and 6. TINT
When the setting items in the TV mode are adjusted, the same values will be set to the linking items in the video mode. For example,
if the value of 1. PICTURE is changed, the value of 8. EXT PIC. will also be changed accordingly. (The initial setting values given in
( ) are offset values against the TV mode.)
5 When the four items (Nos. 8, 9, 10 and 11) are adjusted in the video mode, the setting values will be changed independently from
those in the TV mode.
Setting item Variable range Initial setting value Settingitem Variable range Initial setting value
1. PICTURE 000 ~ 127 070 31. C-TRAP 000 / 001 000
2. BRIGHT 000 ~ 127 064 32. C-TR. FO 000 ~ 003 002
3. COL. PALM 000 ~ 127 070 33. C-TRAP Q 000 ~ 003 000
4. COL. PALN 000 ~ 127 070 34. FIX B/W 000 / 001 000
5. COL. NTSC 000 ~ 127 072 35. APA P. FO 000 ~ 003 001
6. TINT 000 ~ 127 065 36. DC TRAN. 000 ~ 007 007
7. TV DTL 000 ~ 063 033 37. B. ST. SW 000 / 001 000
8. EXT PIC. ±025 (±000) 38. B. ST. PO. 000 ~ 007 000
9. EXT BRI. ±025 (+005) 39. ABL GAIN 000 ~ 007 004
10. EXT COL. ±025 (±000) 40. ABL PO. 000 ~ 007 000
11. EXT TINT ±025 (+001) 41. HALF T. 000 ~ 002 001
12. EXT DTL 000 ~ 063 035 42. DRV G SW 000 / 001 000
13. P/N KILL 000 / 001 001 43. NT. COMB 000 / 001 001
14. Y S CONT 000 ~ 031 031 44. COIN DET 000 ~ 003 001
15. TV Y-DL 000 ~ 007 001 45. NOISE L. 000 ~ 003 003
16. EXT Y-DL 000 ~ 007 002 46. VCD MODE 000 / 001 000
17. WPL SW 000 / 001 000 47. V AGC SP 000 / 001 000
18. Y GAMMA 000 / 001 000 48. H POS. 50 000 ~ 031 007
19. P/N G P. 000 / 001 000 49. H BLK. 50 000 ~ 007 000
20. COL. L SW 000 / 001 001 50. V POS. 50 000 ~ 007 000
21. COL. LMT. 000 ~ 003 001 51. V SIZE50 000 ~ 127 087
22. PN C. ATT 000 ~ 003 001 52. V S CR50 000 ~ 127 028
23. OFST. SW 000 / 001 000 53. V LIN. 50 000 ~ 031 004
24. OFST. B-Y 000 ~ 015 008 54. H POS. 60 000 ~ 031 012
25. OFST. R-Y 000 ~ 015 008 55. H BLK. 60 000 ~ 007 000
26. C-TOF SW 000 / 001 001 56. V POS. 60 000 ~ 007 000
27. TV T FO 000 ~ 003 001 57. V SIZE60 000 ~ 127 088
28. TV T Q 000 ~ 003 000 58. V S CR60 000 ~ 127 048
29. EXT T FO 000 ~ 003 000 59. V LIN. 60 000 ~ 031 004
30. EXT T Q 000 ~ 003 000 60. RF AGC 000 ~ 255 160
: Do not adjust.
14 No. 56033
AV-21F1P
q VIDEO STATUS
Initial setting value
Setting item Variable range
CINEMA GAME
TINT ±20 ±0 ±0
COLOR ±20 -3 -3
PICTURE ±20 -10 -10
BRIGHT ±20 ±0 ±0
DETAIL ±15 ±0 -5
G DRIVE -99 ~ +50 -22 ±0
B DRIVE -99 ~ +50 -54 ±0
R CUT. ±10 ±0 ±0
G CUT. ±10 ±0 ±0
B CUT. ±10 ±0 ±0
: Do not adjust.
q OTHERS q RF AFC CHK
Setting item Variable range Initial setting value Setting item Variable range Initial setting value
1. OSD HP 000 ~ 063 023 RF AFC ON / OFF ON
2. OSD VP 000 ~ 015 012 FINE -77 ~ +77 xx
3. H-CK SW 000 / 001 000
: Do not adjust.
: Do not adjust.
q LOW LIGHT q I2C BUS CTRL
Setting item Variable range Initial setting value Setting item Variable range Initial setting value
R CUTOFF 000 ~ 255 020 I2C BUS ON / OFF ON (Fixed to ON)
G CUTOFF 000 ~ 255 020 : Do not adjust.
B CUTOFF 000 ~ 255 020
q HIGH LIGHT
Setting item Variable range Initial setting value
G DRIVE 000 ~ 255 128
B DRIVE 000 ~ 255 128
No. 56033 15
AV-21F1P
ADJUSTMENTS
B1 POWER SUPPLY CHECK
Measuring Description
Item Test point Adjustment part
instrument
Check of q Signal B1 (TP-91) 1. Receive a black and white signal (color off). (NTSC)
B1 POWER Generator TP-E (")
" 2. Connect a DC voltmeter between B1 (TP-91) and TP-E (")
SUPPLY q DC [B1 (between pins 1 and 3 of the connector B1).
voltmeter connector] 3. Make sure that the voltage is DC134.5 ± 2.0V.
IF VCO ADJUSTMENT
Measuring Description
Item Test point Adjustment part
instrument
Adjustment q Signal CW TRANSF. q Under normal conditions, no adjustment is required.
VCO (CW) Generator (T111) 1. Receive any broadcast. (Use a channel without offset fre-
q Remote quency.)
control unit [MAIN PWB] 2. Select the sub menu screen VCO (CW) from the SERVICE
SUB MENU: VCO (CW) MENU. (More specifically, in the SERVICE MENU, press the
MENU 1/4 key to select VCO (CW) and then press the MENU
2/3 key to enter the sub menu screen VCO (CW) .)
3. Confirm that the color of "TOO HIGH" and "TOO LOW" changes
TOO HIGH in yellow as you turn the CW TRANSF. At this time, check that
ABOVE REFERENCE
BELOW REFERENCE YELLOW "SYNC: YES" appears on the screen.
TOO LOW
4. Slowly turn the CW TRANSF. until "BELOW REFERENCE"
SYNC : YES
changes to yellow. Also, at this time, check that "SYNC: YES"
EXIT BY
EXIT
IT
appears on the screen.
5. Press the EXIT key to return to the normal screen.
RF AGC ADJUSTMENT
Measuring Description
Item Test point Adjustment part
instrument
Adjustment Remote 60. RF AGC 1. Receive any broadcast.
of RF AGC control unit 2. Select the sub menu screen PICTURE from the SERVICE
MENU.
3. Select 60. RF AGC with the MENU 1/4 key.
4. Press the MUTING key to turn off the color.
5. Press the MENU 2 key to get noise on the screen picture. (The
setting value will be decreased.)
6. Press the MENU 3 key until noise disappears from the screen.
7. Change to other channels and make sure that there is no ir-
regularity on the screen picture.
8. Press the MUTING key to turn on the color.
FOCUS ADJUSTMENT
Measuring Description
Item Test point Adjustment part
instrument
Adjustment Signal FOCUS VR 1. Receive a cross-hatch signal.
of FOCUS generator [In HVT] 2. While watching the screen, adjust the FOCUS VR to make the
vertical and horizontal lines as fine and sharp as possible.
3. Make sure that, when the screen is darkened, the lines remain
in good focus.
16 No. 56033
AV-21F1P
DEFLECTION CIRCUIT ADJUSTMENT
The setting (adjustment) using the remote control unit is made on the basis of the initial setting values shown on page 14.
The setting values which adjust the screen to the optimum condition can be different from the initial setting values.
q Do not change the initial setting values of the setting (adjustment) items not listed herein.
Measuring Description
Item Test point Adjustment part
instrument
Adjustment q Signal 56. V POS. 60 (60Hz)
of generator 57. V SIZE60 1. Receive a cross-hatch signal. (NTSC or PAL-M)
V. HEIGHT 58. V S CR60 2. Select the sub menu screen PICTURE from the SERVICE
V. POSITION q Remote 59. V. LIN. 60 MENU.
V. LIN. control 3. Select 56. V POS. 60 with the MENU 1/4 key, and confirm that
V. S CR unit the setting value is 0.
NOTE: The value of 56. V POS. 60 should be fixed to 0.
4. Confirm the initial setting value of 57. V SIZE60, 58. V S CR60,
and 59. V. LIN. 60.
5. Adjust 57. V SIZE60 and make the vertical screen size 92% of
the picture size, with the MENU 2/3 key.
6. Adjust 59. V. LIN. 60 and 58. V S CR60 to get the best vertical
linearity, with the MENU 2/3 key.
50. V POS. 50 (50Hz)
51. V SIZE50 1. Receive a cross-hatch signal. (PAL-N)