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3-16
3. Y/C CIRCUIT
(B) Hi-Fi Playback
YES
YES
YES
YES
PB mode
No Sound.
Check the Vcc of IC801
(Pins34, 40)
Check the Hi-Fi Selection switch.
(IC801 Pin41) and the Tape quality.
Is the RF Envelope at
IC801 Pin44 over 2Vp-p?
YES
Check IC801 Pin42(Data),
Pin43(Clock)
YES
Do Audio Signals appear at
IC801 Pin16(L-CH), 17(R-CH)?
YES
Do Audio Signals appear at
IC802 Pin10(L-CH), 16(R-CH)?
YES
YES
YES
Do Audio Signals appear at
IC802 Pins22, 26?
Do Audio Signals appear at
JK902?
Check Power 5.0V, 12VT.
NO
Check IC501 Pin106
(A.H/SW)
NO
NO
Check the parts of µ-COM
(IC501 Pins59, 60)
NO
Check the Connection at
P3D01 Pins7, 9.
NO
Check the A.IN line of
IC802(C855, C856)
NO
Check the Vcc of IC802
Pin4.
Replace IC802.
Check the Jack(JK902)
NO
NO
Check Power.
NO
Содержание DVP 721VR
Страница 36: ...3 32 3 33 2 POWER SMPS CIRCUIT DIAGRAM 2 ...
Страница 37: ...3 34 3 35 3 TU IF NICAM A2 CIRCUIT DIAGRAM EE MODE VIDEO TU MODE AUDIO ...
Страница 40: ...3 40 3 41 6 SCART JACK CIRCUIT DIAGRAM ...
Страница 45: ...3 50 3 51 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD VCR DVD _SOLDER SIDE LOCATION GUIDE ...
Страница 46: ...3 52 3 53 2 MAIN P C BOARD VCR DVD _COMPONENT SIDE LOCATION GUIDE ...
Страница 60: ...3 68 F FE RFL FIG 7 2 DVD F FE RFL FIG 7 3 CD ...
Страница 61: ...3 69 F FE RFL FIG 7 4 CD 8 FOCUS ON WAVEFORM FE FOSO F F FIG 8 1 DVD ...
Страница 63: ...3 71 10 TRACKING CONTROL RELATED SIGNAL System checking TE TRSO T T FIG 10 1 DVD TE TRSO T T FIG 10 2 CD ...
Страница 64: ...3 72 11 MT1389 AUDIO OPTICAL AND COAXIAL OUTPUT SPDIF FIG 11 1 12 MT1389 VIDEO OUTPUT WAVEFORM 1 100 FIG 12 1 ...
Страница 65: ...3 73 13 MT1389 AUDIO OUTPUT TO AUDIO DAC 2 COMPOSITE VIDEO SIGNAL FIG 12 2 FIG 13 1 ...
Страница 66: ...3 74 FIG 14 1 14 AUDIO OUTPUT FROM AUDIO DAC ...
Страница 71: ......
Страница 72: ...3 79 3 80 CIRCUIT DIAGRAMS 1 SYSTEM CIRCUIT DIAGRAM ...
Страница 73: ...3 81 3 82 2 RF DSP SERVO CIRCUIT DIAGRAM ...
Страница 74: ...3 83 3 84 3 AV JACK CIRCUIT DIAGRAM ...
Страница 107: ......
Страница 113: ......
Страница 115: ......