Teac EU-34HT, Service Manual

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14
OPTION 03
B7B6B5B4B3B2B1B0
B7 = Hob: Note1
B6 = Bps: 0 (Bypass chroma delay line: 0 Chroma delay line active, 1=
Delay line bypassed)
B5 = Acl: X (Automatic Colour Limiting: 0= ACL not needed for
standard burst/chroma transmissions; 1= ACL active, for non
standard chroma-to-burst ratio) (don’ t care)
B4 = Cmb: Note2
B3 = Ast: X (Abs-loop Start-up mode: 0=Automatic mode, RGB drive
switches on when ABS loop stable; 1= Switch-on under control of
micro controller) (don’ t care)
B2 = CL2: 1 (Note3)
B1 = CL1: 1 (Note3)
B0 = CL0: 0 (Note3)
Note1:
0 = Pal+ helper output blanking disabled
1 = Pal+ helper output blanking enabled
Note2: Comb Filter
0 = Pin 33 Low, comb filter off
1 = Sub-carrier output pin 33 active, comb filter on
Note3:
CL2,CL1,CL0 bits: Cathode drive level:
CL2 CL1 CL0 Variation Cathode Drive Level
0 0 0 Minimum
0 0 1 + 14 %
0 1 0 + 28 %
0 1 1 + 42 %
1 0 0 + 57 %
1 0 1 + 71 %
1 1 0 + 85 %
1 1 1 + 100 %
OPTION 04
B7B6B5B4B3B2B1B0
B7 = Ifs: X (If sensitivity: 0= Normal Sensitivity, 1= Maximum gain reduced by 20 dB (reduces the total gain range)) (don’ t care)
B6 = Mod : X (Modulation standard: 0 = Negative Modulation, 1 = Positive Modulation, AM demodulated sound can be connected
to pin 2) (don’ t care)
B5 = VSW: X (Video Mute Switch : 0= Normal Operation, 1= IF Video signal switched off (pin 6 is forced to ground)) (don’ t care)
B4 = Sm: X (Sound mute of internal FM demodulator: 0 = Normal Operation, 1 = Sound Muted) (don’ t care)
B3 = Ds: 0 (Dynamic Skin Control: 1= on, 0= off)
B2 = Dsa: 0 (Dynamic Skin Control Angle: 1= 123 degrees, 0 = 118 degrees)
B1 = Fav: 0 (Fixed Audio Volume: 0= Volume controlled front-end or external audio output at pin 15,
1= Fixed front-end audio output at pin 15)
B0 = Lfa: X (Secam L1 Frequency Adjust: 0= Normal IF Frequency, 1 = IF Frequency shifted for L1 standard (align with IFPL)
(don’ t care)
OPTION 05
B7B6B5B4B3B2B1B0
B7 = Avl: 0 (Automatic Volume Levelling: 1= active, 0= disabled)
B6 = Hbl: X (Wider Horizontal Blanking: 1= blank left+right edges, 0= normal blanking on H-flyback pulse) (don’ t care)
B5 = Vim: X (Video Ident Mode: 1= Coupled to Source Switch, 0= to IF) (don’ t care)
B4 = Gai: (Gain of luminance channel: 0= Normal gain of luminance channel (V27 =1Vblack-white) (When CTI is disabled),
1= High Gain for Luminance Input (When CTI is enabled) (V27=0.45Vpp))
B3 = Ncin: X (Vertical Divider Mode: 0=Normal operation of the vertical divider, 1 = Vertical divide switched to large search
window) (don’ t care) )
B2 = Stm: X (Search Tuning Mode: 0= Normal operation, 1= Reduced Sensitivity of coincidence detector) (don’ t care)
B1 = Vid: X (Video Ident Mode: 1= No influence, 0= IFI contols Ö1- loop) (don’ t care)
B0 = Lbm: 0 (Long blanking mode: 0= Blanking adapted to standard (50 or 60 Hz), 1= Fixed blanking according 50 Hz standard)
OPTION 06
B7B6B5B4B3B2B1B0
B7 = Hco: X (EHT Tracking mode: 0= EHT tracking only on vertical, 1 = EHT tracking on both vertical and East-West) (don’ t care)
B6 = EVG: 0 (Enable Vertical Guard: 0= Only vertical guard detection (Output bit NDF), 1= Detection (NDF) and protection by
blanking RGBout
B5 = SBL: X (Service Blanking: 0= No service blanking, 1= Service Blanking active) (don’ t care)
B4 = Prd: X (Over-voltage protection input mode: 0= Only over-voltage detection (output bit XPR),
1= Over- voltage detection (XPR) and inhibit horizontal drive (protection)) (don’ t care)
B3 = Sys: System: 0 = Only NTSC M System, 1= NTSC M, PAL M, PAL N Systems available
B2 = Rbl: X (RGB Blanking: 0= Normal picture visible, 1= RGBout (pins 21, 20, 19) blanked) (don’ t care)
B1 = Cor: X (Noise coring: 0= Noise coring off; 1= Noise coring on, reduce peaking function on small transients) (don’ t care)
B0 = Aen: (Enable APS: 0= APS disabled >> Preset, 1= APS enabled >> No Preset)