Zenith H27G48S Support Question
Zenith H27G48S Support Question
Find answers below for this question about Zenith H27G48S.Need a Zenith H27G48S manual? We have 1 online manual for this item!
Question posted by lcook20502 on May 5th, 2015
Vga Port Use
Would like to use TV as monitor for a computer for classroom use. Have tried both VGA ports (front and back.) The TV recognizes the port because it displays VGA on screen. But I get no signal from the computer.
Current Answers
Related Zenith H27G48S Manual Pages
Service Manual - Page 2
... be run up and down while monitoring the high voltage with types identical ...probe on the hazards of trying to original layout upon completion...television receiver or generically approved for use with its rating within an equilateral triangle is no circumstances should also avoid the use only by using... used . SAFETY These components are equipped
with TVs of the same or larger screen...
Service Manual - Page 3
..., the TV set can be performed using the following procedure. If replacement of any of TX3201 (Fly-Back Transformer) is being displayed. Turn the television ón´ and confirm a good signal is peak...Back transformer. Critical safety component (designated with the table below fro the proper CPT screen size. In this voltage will be higher than the maximum, verify circuit component ...
Service Manual - Page 4
To exit the Installer's Menu, press ENTER again. Use the SELECT key to the screen. Normally Factory menu items do not require adjustment.
00-I...controlled by AUTO PROGRAM, select the appropriate AFC setting here and add the channels using the optional LP702 installer's remote control. This is desirable when the TV is displayed in the Setup Menu.
4-I , press 1, 5, then MENU. CHAN LOCK...
Service Manual - Page 5
... to suppress CHANNEL PREVIEW from accessing screen menus with 63 as the default which provides full range of volume control. NOT USED
28-I . When set to ...displayed prior to turn V-Chip feature off ; It may be set the Alarm.
18-I . NOTE: The maximum volume level cannot have it is selected, the current volume level will not control TV.
21-I . When set the same value on every TV...
Service Manual - Page 6
... menu will not appear. DIS. Set to 0 to Color Chart.
0 = Black
3 = Yellow
6 = Cyan
1 = Red
4 = Blue
7 = White
2 = Green
5 = Violet
56-I . Channel-Time display will not appear. NOT USED
40-I . FOR. SETUP M. (Setup Menu Foreground Color)
Set according to enable the V-Chip menu.
52-I . BCK. POLL RATE M.P.I . Leave at default setting unless changed by...
Service Manual - Page 7
...the Source menu. NOT USED
76-I . UPN MSB User programmable number, most significant byte1 readable by broadcaster, XDS display will not appear. ... Green
5 = Violet
Note: If foreground and background color are
the same, menu background is selected for the ChannelTime display. BCK. Set to 0 to enable custom color for Channel- EN. M. (V-Chip Menu Foreground Color)
Set according...
Service Manual - Page 8
...-I . The Factory Menu 1 is retained at TV turn off.
83-I .
To change the settings use the Left/Right ADJ keys.
3828VD0171G
2-5
DIGITAL... of the NTSC YUV and RGB Computer input signals. Set to default setting at power Off. A. MUTE ...key until the display changes, then press 1, 9, 3, 7, then ENTER.
FACTORY MENU
ACCESSING THE FACTORY'S MENU Using the remote control ...
Service Manual - Page 9
... value for the demodulated audio signal. Range: 015, 0H = -1.9 dB, 7H = 0 dB, FH = +1.7 dB.
018-F SUBBRIGHT Sub-brightness control. The POWER key will automatically turn off ). Range: 0-3.
Use the ADJUST keys.
004-F HORZ POS: Moves Captions and displays horizontally on , the Factory Menu line appears at center of screen during G2 adjustment.
007-F RF...
Service Manual - Page 12
...
105-F YCSELM: Y/C select among composite video and s-video inputs.
106-F NOSIGBM: No signal behavior. 0=noisy screen when out of sync.
125-F TNOTCHOFFM: Luminance notch-filter.
126-F NTCHSELM: Luminance notch ...Chroma bandwidth.
109-F PLLTCM: Time constant HPLL (VCR...TV) Default value in 0 (very fast).
110-F COMBM: Delay line. 1=Do not use delay line.
111-F CKILLM: Chroma level for Color off...
Service Manual - Page 14
... 254d.
215-F COARSEDEL: Luminance coarse delay output. Default value is 237d.
214-F PKLU: Voltage level for 60HZ.
FACTORY MENU Default value is used for CVBS4 or Y.
186-F CLMPSIG1: Clamping signals ADC1. 0=1st color decoder.
187-F YCTOCOMB: YC to Comb filter. 0=Normal operation.
188-F VDG: Vertical difference gain. 1=medium2
189-F HDG: Horizontal difference...
Service Manual - Page 15
...ultra black level during blanking and output clamping which is the most negative signal at the cathode. This value is used in one formula to center the tint level of RF input.
008...internal brightness control with grey scale tracking).
233-F DISV NTSC: RGB Video signal on/off voltage at the cathode. This value is used in one formula to center the tint level of S-Video inputs WHITE ...
Service Manual - Page 16
...0-15, Initial value: 5.
033-F UP_VLIN: Vertical linearity control. Default value is used in one formula to limit the max brightness level on SVGA format.
059-F OSD...on SVGA format.
058-F MAXBRIGHT SVGA: Max value of 64d and default value of 12dB. This value is used in one formula to limit the max contrast level on factory adjustment of NTSC video format.
057-F MAXCONTRAST ...
Service Manual - Page 17
... pins. Default value is 0 (enabled).
081-F ADCSEL: Select ADC for Y Pr Pb. Default value is 235d.
070-F CONADJ: Contrast adjustment for sync signal conversion. 0=Use ADC_G
082-F AABYP: Bypass RGB/YUV anti-aliasing filter. 0 = use filter
083-F CLMPVG: Clamping value G ADC. 1=80.
064-F FPOL SVGA: Default value is 1.
063-F DISV SVGA: RGB Video...
Service Manual - Page 18
... CONT Y PrPb: OSD amplitude can also be controlled by OSD contrast with the TV System. Range: 0-255d.
101-F B-CUTOFF Y PrPb: Blue cutoff control is used to adjust cut -off voltage at the cathode. NTSC: IC CXA2150
108-F LTILEV_YPRPB: Luminance signal edge enhancement setting for RF input. Default value is 1.
119-F PKCTIHPM_RF: High pass...
Service Manual - Page 19
...), the control circuit enables regulator operation. Shutdown Circuit 5. Both power supplies use in many television and monitor applications. STAND-BY START UP The voltage output of rectifier BRX3410 (+V2 150VDC...THEORY
POWER SUPPLY DEFINITION The Power Supply uses a COLD chassis and is a single sided circuit board that has been developed for screen sizes 27" through the bridge rectifier ...
Service Manual - Page 20
...connector CN1D2. EW-DRV is induced to secondary windings of TX3201 to 14 Amps. This signal (HPROT) is a positive and negative saw tooth current through the horizontal deflection coils (...has a duty cycle of driver transformer, TX3200.
This characteristic cancels non-linearities in TX3200 is used for synchronization, phase comparison, etc. EW-DRV from "Off" to charge the Scapacitor(s) ...
Service Manual - Page 21
... positions. 2.
Move the two tabs together around
the neck of the CRT neck, keeping it is not displayed as follows: a. VERTICAL-TILT WEDGE ADJUSTMENT
The vertical lines at the top of Red and Blue Beams
B...If the red raster is firmly seated between the CRT glass and the horizontal coils.
Use the 6-pole static adjustment to the receiver and adjust static (center) convergence as a ...
Service Manual - Page 22
... tube and yoke will disappear after following modification steps and illustration to insure that display corner purity problems even after degaussing. Follow through on the horizontal tilt adjustment by... piece of dust and other foreign material. The CRT glass surface should be improved by using the 2 and 10 o'clock
positions and secure each wedge firmly against the CRTM glass....
Service Manual - Page 23
...and SC1_OUT_L (pin 31) outputs. The Tuner/IF section processes the Antenna/ Cable signal.
At the front jack pack one monolithic video output amplifier. SERVICING SERVICING
VIDEO OUTPUT AMP ... from the audio processor DACM_R (pin 24) and DACM_L (pin 25) outputs. Variable output monitor is not used ). The A/V switch ICM2900 selects which can be plugged in to the audio processor. This...
Service Manual - Page 24
...The pin 7 is 0.7V (black to the A/V switch through the CN9C4, 4pins connector. The Input signal amplitude is the power supply for the input stage and the pins 21,18 and 15 are fed to ...to 37.9Khz The YUV - SERVICING This IC has internally a 4H 3L comb filter used to video output board. H, V sync signals from the ICM2001 are the power supplies for the RGB output stages. VIDEO OUTPUT BOARD
...
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