JVC AV-2954WE, Service Manual

Page: 6 / 123

1-6 (No. YA104)
Pin no. Terminal name Port name I/O Remark
1 VssP2 VSSP2 - GND
2 VssC4 VSSC4 - GND
3 V1.8C4 VDDC4 I 1.8V (Digital)
4 V3.3A3 VDDA3(3.3V) I 3.3V
5 VrefP_Sdac VREF_POS_LSL I 3.3V (Positive)
6 VrefN_Sdac VREF_HPL - GND
7 VrefP_Sdac VREF_HPR I 3.3V (Negative)
8 VrefN_Sdac VREF_HPR - GND
9 VrefP_Sdac VREF_POS_HPR I 3.3V (Positive)
10 XtalIn XTALIN I Crystal oscillator input (24.576 MHz)
11 XtalOut XTALOUT O Crystal oscillator input (24.576 MHz)
12 VssA1 VSSA1 - GND
13 NECK VGUARD/SWIO I V-guard input/ I/O switch
14 CONT DECDIG I Decoupling digital supply
15 V5P1 VP1 I +5V
16 Ph2 PH2LF - Phase-2 filter
17 Ph1 PH1LF - Phase-1 filter
18 Gnd1 GND1 - GND
19 SecPll SECPLL - SECAM PLL decoupling
20 Dec8G DECBG - Bandgap decoupling
21 EW EWD/AVL O East-West drive output or AVL capacitor
22 VDRB- VDRB O Vertical drive B output
23 VDRA+ VDRA O Vertical drive A output
24 Vif1 VIFIN1 I IF input 1
25 Vif2 VIFIN2 I IF input 2
26 Vsc VSC - Vertical sawtooth capacitor
27 Iref IREF I Reference current input
28 GndIF GNDIF - GND
29 Sif1 SIFIN1/DVBIN1 I SIF input 1
30 Sif2 SIFIN2/DVBIN2 I SIF input 2
31 AGC AGCOUT O Tuner AGC output
32 EHT EHTO I EHT/overvoltage protection input
33 Ssif/RefIn/Avl/RefOut AVL/SWO/SSIF/REFO/REFIN
O Automatic Volume Levelling/ sound IF input / subcarrier
reference output / external reference signal input for I
signal mixer for DVB operation
34 L3 AUDIOIN5L I Audio-L3 input (left signal)
35 R5 AUDIOIN5R I Audio-R3 input (right signal)
36 L_OUT AUDOUTSL O Audio L output
37 R_OUT AUDOUTSR O Audio R output
38 DecsDem DECSDEM - Decoupling sound demodulator
39 QssO/AmO/AudeEm QSSO/AMOUT/AUDEEM
O QSS intercarrier output / AM output / deemphasis / (front-
end audio out)
40 Gnd2 GND2 - GND
41 PllIf PLLIF - IF-PLL loop filter
42 SifAgc SIFAGC/DVBAGC - AGC sound IF
43 IfVo/FmRo/DvbO DVBO/IFVO/FMRO O Not used
44 NC DVBO/FMRO O Not used
45 V8AudioSwitches VCC8V I 8V
46 AgcSsif AGC2SIF - AGC capacitor second sound IF
47 V5P2 VP2 I 5V
48 V_OUT IFVO/SVO/CVBSI O Video output
49 L1 AUDIOIN4L I Audio-L1 input
50 R1 AUDIOIN4R I Audio-R1 input
51 V3 CVBS4/Y4 I Video V3
52 C4 C4 I Not used
53 Audio2InL AUDIOIN2L I Not used
54 Audio2InR AUDIOIN2R I Not used
55 V2/Y CVBS2/Y2 I Component Y/Video V2
56 L2 AUDIOIN3L I Audio L2 input (Left signal)
57 R2 AUDIOIN3R I Audio R2 input (right signal)
58 Y3/Cvbs CVBS3/Y3 I S-Video Y1
59 C1 C2/C3 I S-Video C1
60 AudioLsL AUDOUTLSL O Audio L output for audio power amplifier
61 AudioLsR AUDOUTLSR O Audio R output for audio power amplifier
62 HP_L AUDOUTHPL O Headphone L
63 HP_R AUDOUTHPR O Headphone R
64 CVBSO/PIP CVBSO/PIP O CVBS / PIP output
IC701 Pin Function List (1/2)