Teac EU-34HT, Service Manual

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6
IC VERSION (TDA) 8840 8842
Multi-standard IF X
Automatic Volume Limiting X X
PAL Decoder X X
SECAM Decoder X
NTSC Decoder X
Dynamic Skin Control
Colour Matrix PAL/NTSC (Japan) X
Colour Matrix NTSC Japan/USA
YUV interface
Base-band delay line X X
Vertical zoom X X
PINNING PIN VALUE
1. Sound IF input : 1mVrms
2. External audio input : 500mVrms
3. IF demodulator tuned circuit 1
4. IF demodulator tuned circuit 2
5. IF-PLL loop filter : Min:32-Max:60 MHz
6. IF video output : 4.7V (Negative Modulation), 2V (Positive Modulation)
7. Serial clock input : Low level max:1.5 V, High level min 3.5V
8. Serial data input/output : Low level max:1.5 V, High level min 3.5V
9. Bandgap decoupling
10. Chrominance input (S-VHS) : 1Vpp, Max:1.4Vpp
11. External CVBS/Y input : 1Vpp, Max:1.4Vpp
12. Main supply voltage 1 : 8V, Min:7.2V, Max:8.8V
13. Internal CVBS input : 1Vpp, Max:1.4Vpp
14. Ground 1
15. Audio output : 700mVrms, Min:500mVrms, Max:900mVrms
16. SECAM PLL decoupling
17. External CVBS input : Vpp, Max:1.4Vpp
18. Black-current input : Amplitude of “low” reference current : 8mA
Amplitude of “high” reference current : 20mA
19. Blue output : 2Vpp
20. Green output : 2Vpp
21. Red output : 2Vpp
22. Beam current limiter input/V-guard input
23. Red input for insertion : 0.7Vpp, Max:0.8Vpp
24. Green input for insertion : 0.7Vpp, Max:0.8Vpp
25. Blue input for insertion : 0.7Vpp, Max:0.8Vpp
26. RGB insertion input : Max:0.3V
27. Luminance input : 1.4Vpp
28. Luminance output : 1.4Vpp
29. (B-Y) signal output : 1.05Vpp
30. (R-Y) signal output : 1.05Vpp
31. (B-Y) signal input : 1.05Vpp
32. (R-Y) signal input : 1.05Vpp
33. Subcarrier reference output : 3.58/4.43 MHz
34. 3.58 MHz crystal connection
35. 4.43/3.58 MHz crystal connection
36. Loop filter phase detector
37. 2nd supply voltage 1 : 8V, Min:7.2V, Max:8.8V
38. CVBS output : 1Vpp, Max:1.4Vpp
39. Decoupling digital supply : 1.8V
40. Horizontal output : Max: 0.3V
41. Flyback input/sandcastle output : Min:100ma, Max:300mA
42. Phase-2 filter : 150 ms/ms
43. Phase-1 filter : ±0.9 kHz, Max: ±1.2 kHz
44. Ground 2
45. East-west drive output
46. Vertical drive A output : 0.95mA
47. Vertical drive B output : 0.95mA
48. IF input 1
49. IF input 2
50. EHT/overvoltage protection input : Min:1.2V, Max : 2.8V
51. Vertical sawtooth capacitor : 3Vpp
52. Reference current input : 3Vpp
53. AGC decoupling capacitor
54. Tuner AGC output : Max:9V (Maximum tuner AGC output voltage), 300mV (Output saturation voltage)
55. Audio deemphasis : 500mVrms
56. Decoupling sound demodulator