Teac CTM6845, Service Manual

Page: 61 / 92

- 9 -
connection port
36 DET Loop filter phase
detector 4.8 4.31 14 9.2
37 V
P2
Second supply
voltage (+8V)
7.8 7.83 1.8 1.8
38 CVBSIO CVBS-1 output 2.46 3.54 14 9.2
39 DECDIG Digital supply end
decoupling
4.9 4.91 14 9.2
40 H OUT Horizontal output 0.41 0.41 3.5 3.5
41 FBISO Flyback input/
sandcastle output
0.56 0.77 13 8.5
42 PH2LF Phase 2 filter 3.41 3.44 13.5 9
43 PH1LF Phase 1 filter 4.08 3.75 14 9
44 GND2 Ground 2 0 0 0 0
45 AVL Automatic energy
level control 0.04 0.04 14 8.9 8844/43 for EW
function
46 VDRB Vertical drive B
output
2.23 2.33 14 8.9
47 VDRA Vertical drive A
output
2.27 2.33 14 8.9
48 IFIN IF input 1 4.56 4.55 13 9.5
49 IFIN2 IF input 2 4.56 4.55 13 9.5
50 EHTO EHT/over-voltage
protection input -0.28 -0.28 1.2 1.2
51 VCS Vertical sawtooth
input 3.75 3.75 14 9.2
52 I
ref
Reference current
input
3.84 3.84 13 9.2
53 DEC
AGC
AGC decoupling
capacitor
4.43 1.18 14 9.2
54 AGCOUT Tuner AGC output 1.90 4.24 5.5 5.5
55 AUDEEM Audio deemphasis 2.88 2.86 14 9.2
56 DECSDEM Sound demodulator
decoupling 2.54 2.50 14 9.2
[4] Sound power amplification
TDA7057AQ (stereo)
Pin No. Function
Pin ①
Sound volume DC level 1 control
Pin ②
Ground
Pin ③
Audio signal L input
Pin
④
Sound working voltage (+15V-18V)
Pin
⑤
Audio signal R input
Pin
⑥
Ground
Pin
⑦
Sound volume DC level 2 control
Pins ⑧⑩ Sound signal output (8 as positive and 10 as negative)
Pin ⑨
Ground