The BUSH PT92 CTV Chassis, SERVICE MENU.

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The service menu may be used to set up certain parameters, as indicated below. It should not be used
unnecessarily, and should not be used to set parameters which the tv is physically unable to follow
i.e. do not attempt to convert from UHF UK PAL to VHF RUSSIAN SECAM.

Entering The Service Menu:-

The service menu is entered by pressing the <SUB-PAGE> key on the RC and
<VOLUME-DOWN> key on the TV simultaneously when the TV is in TV- mode.
The service menu is left by pressing the <TV> key.
When entering the service mode the first menu item is IF (selection of normal IF). Next items can be selected
using the keys <PROGRAM-UP> and <PROGRAM-DOWN>. The value of each item can be changed
using the keys <VOLUME-UP> and <VOLUME-DOWN>. The item values are displayed as decimal values,
except for the tuner-band-selection, BITS and option items. They are displayed as hexa-decimal values.
All values are stored in non-volatile memory when the service menu is left.
The “INIT CTV832U” item initializes the NVM: It clears all names and
tuning information of all programs and writes default values for the service alignments
and preset values in NVM.
While doing so, the OSD displays “BUSY”. When the initialization is finished,
the message "READY” is written on the screen.

SERVICE MENU

Item 	DefauIt 	Explanation
IF 	38.9	IF selection (58.8, 45.8, 38.9 or 38.00 MHz)
IFL1	33.9 	IF for SECAM-L1 selection (33.4 or 33.9 MHz)
HP 	31 	Horizontal parallelogram
HB 	31 	Horizontal bow
EW 	37	East-west Width for picture setting 16:9
PW 	18 	East-west Parabola for picture setting 16:9
UCP 	13	East-west Upper Corner parabola for picture setting 16:9
LCP 	13	East-west Lower Corner parabola for picture setting 16:9
TC 	28 	East-west Trapezium for picture setting 16:9
HP4:3 	31 	Horizontal parallelogram for picture setting 4:3
HB4:3	31	Horizontal bow for picture setting 4:3
EW4:3	45 	East-west Width for picture setting 4:3
PW4:3 	15	East-west Parabola for picture setting 4:3
UCP4:3 	35	East-west Upper Corner parabola for picture setting 4:3
LCP4:3 	25 	East-west Lower Corner parabola for picture setting 4:3
TC4:3 	31 	East-west Trapezium for picture setting 4:3
HS	31 	Horizontal Shift
VS 	31	Vertical Slope
VA 	31 	Vertical Amplitude
SC 	31 	S-Correction
VSD	off 	Vertical Scan Disable
VSH	31 	Vertical Shift
VX 	25 	Vertical zoom (East-west only)
BLR 	7 	Black Level Red
BLG	7 	Black Level Green
WPR	31	White point correction Red
WPG	31	White point correction Green
WPB 	31 	White point correction Blue
Ys 	15	Y-delay adjustment for SECAM
Yn 	8 	Y-delay adjustment for NTSC
YP	0	Y-delay adjustment for PAL
Yo 	0 	Y-delay adjustment for external sources
AGC	 4 	AGC take over
CL	4 	Cathode drive level
Bits 	00 	(ACL=0; FCO= 0; SVO= 0; HP2= 0; FSL= 0; OSO= 0)
Bits1 	00 	(FFI= 0; TV= 0; AV-1= 0; AV-2= 0; AV-2S= 0; AV-3= 0; AV-3S= 0; AV = 0)

OptByte1 	(Default=E3)
PAL-BG = Selection PAL-BG (1)
PAL-DK = Selection PAL-DK (1)
PAL-I = Selection PAL-I (0)
PAL-M = Selection PAL-M (0)
PAL-N = Selection PAL-N (0)
NTSC-M = Selection NTSC-M (1)
NTSC-443 = Selection NTSC-443 (1)
SECAM-BG = Selection SECAM-BG (1)
	 *(1) Selected, (0) Not Selected

OptByte2 	(Default=07)
SECAM-DK = Selection SECAM-DK (1)
FRANCE = Selection FRANCE (1)
WEB = Enable/Disable (1/0)
PalBG Scr = When the PalBG Scr selected, TV searches only PalBG. Otherwise it searches all. (0)
AV2 = Selection AV2 (0)
	 *(1) Selected, (0) Not Selected

OptByte3 (Default=E8) = (0)
JR = (0)
HP = (0)
Vol Bar = (1)
Sub Wof = (0)
Presets = (1)
Lock = (1)
Hotel = (0)
When the Hotel mode selected, It’s impossible to
enter menu settings.lt selects the Hotel mode. (1)
	 *(1) Selected, (0) Not Selected

OptByte4 	(Default=B8)
16:9 = Set 16:9 mode active (1)
110 = Selection 110/90 Tube (1/0)
Hpol = Default (0)
Vpol = DefauIt (0)
Field = Default (1)
FE-Out = Default (1)
Sw-on = When the power on the TV, it Enables or Disables
Standby Mode. (1/0)
Vg-Check = Default (1) *(1) Selected, (0) Not Selected

OptByte5 	(Default=09)
Clock = Enable/Disable Clock Menu (1)
AM/PM = (1)
AVL = Auto Volume Level (1) = (0) 1-normal = Default (0)
Flof-Txt = (0)
TR = (0)
DVD Start = (0)
	*(1) Selected, (0) Not Selected

TUNER PARAMETER IN SERVICE AND DEFINITION          PHILIPS   OREGA    TEMIC    SAMSUNG ALPS
TSL Start frequency of the low-band in MHz 		45 	45 	45	 45 	45
TEL End frequency of the low-band 			160 	118 	150 	150	 180
TSM Start frequency of the mid-band			160 	118 	150	 150 	180
TEM End frequency of the mid-band 			440 	400	 440 	425 	465
TSH Start frequency of the high-band 			440 	400 	440 	425 	465
TEH End frequency of the high-band			 863 	865	 865	 865 	900
TBL hex Value needed for switching to the low-band 	A1 	03 	01 	01	 01
TBN hex Value needed for switching to the mid-band 	92 	06	 02 	02	 02
TBH hex Value needed for switching to the high-band 	34	 85 	04 	08	0C
SL 45 Start frequency of the low-band in MHz
TEL 118 End frequency of the low-band
TSM 118 Start frequency of the mid-band
TEM 400 End frequency of the mid-band
TSH 400 Start frequency of the high-band
TEH 863 End frequency of the high-band
TBL 03 hex Value needed for switching to the low-band
TBN 06 hex Value needed for switching to the mid-band
TBH 85 hex Value needed for switching to the high-band
16:9 / 4:3 Adjustment
The CTV832U software uses two sets of parameters for the registers HP (horizontal parallelogram),
 HB (horizontal bow), EW (EW width), PW (parabola/width), UCP (upper corner parabola), 
LCP (lower corner parabola) and IC (EW trapezium). They occur in the service menu for 16:9 screen
with the listed abbreviations. For the 4:3 screen there is a second set of these registers. 
They occur in the service menu with the extension  ‘4:3’ (i.e. HP4:3, HB4:3,...).
Each register set must be adjusted under the right conditions i.e. the 16:9 settings are adjusted
with a 16:9 picture - the 4:3 settings with a 4:3 picture.
The inenu items EW, PW, UCP, LCP, TC, HP4:3, HB4:3,... TC4:3 and VX will only be in the
service menu if the option 16:9 is set in 4 th option byte.

OptByte6 	(Default=00)
UOC-J = Default (0)
ignrSUP = Default (0)
ignrNDF = Default (0)
Pal-BG/DK = (0)
Pal-L = (0)
Eco = (0)
WEB ST = (0)
WSS = (0)