Hitachi C21-RF80S Support Question
Hitachi C21-RF80S Support Question
Find answers below for this question about Hitachi C21-RF80S - 21" CRT TV.Need a Hitachi C21-RF80S manual? We have 1 online manual for this item!
Question posted by nadeedikovita on April 8th, 2022
How To Unlock Childlock Without Remote
The tv screen shows childlock.the remote also is not work .how to unlock it without remote
Current Answers
Answer #2: Posted by SonuKumar on April 8th, 2022 9:40 AM
SonuKumar
Member since:
May 9th, 2021 Points: 16,621,300
Member since:
May 9th, 2021 Points: 16,621,300
How do you unlock a child lock without a remote?You can reset and eliminate the lock on some televisions without the remote, using a few tactics. Hold the power button for five seconds. The television will automatically restart. If the lock is still on, unplug the television and remove the battery from the back panel of the television.
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Related Hitachi C21-RF80S Manual Pages
Service Manual - Page 1
...
Number : 0009E
C21-RF80S/SN/SNT
Destination Code
O81
O51
751
19*
201
433
98*
121
3P31 Chassis
CAUTION: Before servicing this chassis, it is important that the service technician read the" Important Safety Note" in this Service Manual.
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
COLOUR TELEVISION
OCT 2003 Digital...
Service Manual - Page 16
...plug form the wall outlet before the adjustment for at least 30 minutes and degauss the CRT thoroughly with BOM. For safety reasons, all components replaced should not be careful when you...and power is 100~240V 50/60HZ . SERVICE ADJUSTMENTS
ALIGNMENT INSTRUCTION (3P31) Before Servicing The TV Set
The main power is ok, else please proceed servicing.
-16- Screwdriver Without Inductance Pattern ...
Service Manual - Page 17
...screen... Press key SOUND MODE , RECALL , CH I /II keys on the screen. Adjust VSLOPE to set picture in STANDARD mode. keys and adjust using the...set picture in STANDARD mode.
Screen Voltage Adjustment(Key 9)
Press PIC. Press 0 key and a horizontal line will display on remote control unit to obtain picture ...the center of CRT screen in factory mode. Adjust VSHIFT to obtain picture s vertical ...
Service Manual - Page 18
... KEY 7 and select RF AGC item by the REMOTE CONTROL. Adjust VSLOPE to obtain white balance. Item ...TV can auto adjust white balance, but for some CRT maybe need to obtain picture s vertical redisplay ratio more than 90% in factory mode by P+ and P - . Connect Digital voltmeter positive terminal to tuner AGC terminal and negative terminal to obtain menu OSD at the center of CRT screen...
Service Manual - Page 19
....
2.Press the Direct key buttons on the remote control unit specified in factory mode.
3.Select the item using the + and 4.Press RECALL key to access directly into the respective items when in the table to exit factory mode. SERVICE ADJUSTMENTS
Service items
This appendix shows information about service items that are available...
Service Manual - Page 23
...-23- PURITY AND CONVERGENCE ADJUSTMENT
COLOUR PURITY ADJUSTMENT
(1) Before colour purity adjustment,warm up the TV set over 15 minutes and fully degauss. (2) Receive pure white signal in AV status and press... clamper and align red with green dots at the center of CRT screen. (5) Slowly push the deflection yoke toward the front of CRT and set picture in DYNAMIC mode. (3) Loosen the clamp screw...
Service Manual - Page 24
... ones when operation of batteries (for a long time. Do not use old and new batteries together.
Precautions when using the remote control unit
Do not drop the remote control unit. Keep the remote control unit dry.
Do not attempt to physical shocks. OPERATION INSTRUCTIONS
SETUP
Insert The Batteries
1 Remove the battery cover by...
Service Manual - Page 25
... PARTS
Front View of TV Set
1. Remote Sensor 4. Volume Down / Up Button 8. Menu Button 10. TV/AV Button
8 9 6 7 10 11
To turn the TV power OFF
Press the power switch on the TV set and disconnect the ... the wall outlet.
To turn the TV power ON
5
3 21
Press the power switch on the TV set is off the TV.
When the TV set to use this TV set is ON ,the power indicator ...
Service Manual - Page 27
SOUND REVEAL
PIC. The screen will also switch on the TV when at standby mode or vice versa. MONO Mono mode. REMOTE CONTROLLER FUNCTIONS
Remote Control Unit
1234
SOUND SLEEP... ascending or descending order.
6 VOLUME UP + / DOWN
buttons
Press these buttons to switch on the TV from standby mode.
2 SLEEP button Press this button to select the correct sound system.
4 STEREO/BILINGUAL...
Service Manual - Page 28
... to change channel selection to display the settings on screen display and press "2" and "8" buttons. USER
SPEECH
RECALL
8
456
12
SOUND MODE
9
789
MUSIC THEATER
PIC.
MODE
TV/AV
10
0 --/---
11
Sound Mode Description
USER
... REVEAL
PIC. Press again to select a channel.
..
-28- REMOTE CONTROLLER FUNCTIONS
Remote Control Unit
7 MUTE button Press once to 199.
Service Manual - Page 29
REMOTE CONTROLLER FUNCTIONS
Remote Control Unit
SOUND SLEEP SYS. U.N.L
SETUP TUNE HOLD SUBPAGE
TV/TEXT MIX
CLOCK GAME LST-CH TYPE SUBTITLE CANCEL
P
18 21 20
MENU
INDEX
13
P
CLE-9XX
13 MENU button*2 Press this button to enter the menu screens for details of these buttons functions in Teletext mode. P - PIC.
To move left.
+
To...
Service Manual - Page 30
... index page.
6 LANGUAGE button
CLE-9XX
Press this button to select the Teletext
language (if applicable e.g. This page shows the function of the Teletext screen. PIC. SETUP TUNE
REVEAL U.N.L HOLD SUBPAGE
4 COLOUR buttons
1
TV/TEXT CLOCK GAME LST-CH
MIX
TYPE SUBTITLE CANCEL
P
2
Press these buttons to the corresponding pages displayed at the...
Service Manual - Page 31
...789
PIC. Press this button once, "0001" will be displayed at the top left of the screen. LANG. Enter number buttons (0-9) to cancel.
9
SOUND PIC. Press this button again to look ... cycle by the TV station. If there is no sub-pages, "****" will
be displayed on display to the TV mode
temporarily while searching for other sub-pages if available.
REMOTE CONTROLLER FUNCTIONS
9 HOLD...
Service Manual - Page 33
... is switched off TV. buttons.
3 Use the + and
buttons to adjust the settings.
4 Press the MENU button 5 times or press SOUND button to exit to switch off using the remote control unit. Selected Items Functions
VOLUME
Adjust volume level. BASS
Adjust bass level.
Selected Items CLOCK ON TIME ON PROG OFF TIME...
Service Manual - Page 34
...may keep the remote control unit out of reach to prevent children from any unauthorized access to the TV.
*2 In AV mode, only COLOUR SYS will be displayed in PROGRAM. ON SCREEN DISPLAYS
[SETUP]... to exit to skip the channel in [TUNE] menu. *3 If COLOUR SYS is set to TV via buttons on -screen display language. You can rectify this problem by setting the colour system (PAL, NTSC, NTSC4.43...
Service Manual - Page 36
... the rear cover as shown in Figure 1. 2.Remove the rear cover.
DEGAUSSING COIL
DEGAUSSING COIL HOLDER
Figure 1
PICTURE TUBE GROUNDING LEAD
DEGAUSSING COIL SOCKET
To CRT Unit ground
Figure 2
-36-
Service Manual - Page 49
... FAIRCHILD (FAIRCHILD POWER SWITCH) I .C. L=40mm COPPER JUMPER 0.6MM DIA. TDA9874A PHILIPS (DIGITAL TV SOUNDDEMODULATOR/DECODER) QFP44 PACKAGE I .C. STV9302A SGS (VERTICAL DEFLECTION SYSTEM W/FLYBACK GENERATOR) I .C. L602... TDA6107Q PHILIPS (TRIPLE VIDEO OUTPUT AMPLIFIER) WAFER 2.35mm 1 PIN CRT SOCKET G ZS10-2-108 E/E 15-18KV FOR 21"-29" CONTROL ASSEMBLY FOR 3P31 CARBON FILM RESISTOR 1.5K OHM 1/4W ...
Service Manual - Page 50
... +/-5% (TAPE TYPE) CARBON FILM RESISTOR 1K OHM 1/16-1/6W +/-5% (TAPE TYPE) ELECTROLYTIC CAPACITOR 10UF 16V +/-20%(TAPE TYPE) INFRARED RECEIVER MODULE HS0038B 38KHz FOR PCM REMOTE CONTROL SYSTEMS
-50- L=40mm CARBON FILM RESISTOR 47K OHM 1/4W +/-5% (TAPE TYPE) CARBON FILM RESISTOR 47K OHM 1/4W +/-5% (TAPE TYPE) CARBON FILM RESISTOR 75 OHM...
Service Manual - Page 51
...
! SW601 YZ550002030300
SPL YZ560010808401
SPR YZ560010808401
! TH601 YZ4135KZ090002
! CRT YZ500351010B02
! T451
YZ511506400103 YZ513105110126
H603 YZ540021511301
H501 YZ540025040205
L453 YZ5900G4010600
273P1N61ST00M
! DEF LECTION LINEAR COIL 29uH 10mm FOR 14"-21" TV DEGAUSSING COIL FOR 21" TV L=1560mm T=50 220VAC 21" SEG-HITACHI COLOR PICTURE T UBE A51JSY63X13(C) (NORTH) DIA...
Service Manual - Page 52
... (3P31) ENG 1 BACK CABINET - BLACK (HIPS) 1 FRONT LENS (TRANSPARENT) 1 POWER SWITCH HOLDER - (ABS) 2 TAPE 280 X 25 X 0.3mm 2 TAPE 250 X 20 X 0.3 MM 1 TAPE 420 X 10 X 0.3 MM 4 CRT MTG.
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