3-13
3. Y/C CIRCUIT
(4) When the Video signal doesn’t appear on the screen in REC Mode,
YES
YES
YES
YES
YES
YES
NO
NO
YES
YES
YES
YES
YES
Check system part
(V.H/SW)
Replace IC301.
Check the drum
*OPTION
Pins72, 73, 74(SP)
Pins65, 66, 67(EP)
REC mode
Check the EE mode
NO
Is EE mode normal?
Is color normal?
A
A
YES
YES
Is brightness normal?
Does signal appear at
IC301 Pins41, 50?
NO
Check X301 oscillation
frequency.
YES
Is the brightness signal sup-
plied to IC301 Pins18?
Is SW 5V supplied to IC301
Pins23, 44, 45, 68, 77?
Check the power of Pins23,
44, 45, 52, 68, 77.
Check the SW 5V power.
NO
NO
NO
NO
NO
Is Y/C Bus applied to
IC301 Pins53, 54, 55?
Check the SW 5V power
Check system part
Do X301 and X-TAL
oscillate?
Check X301.
Is V.H SW supplied to
IC301 Pin57?
Does the FM signal appear
at IC301 Pins73(SP)/
66(EP)?
Содержание XBV613 - DVD/VCR Combination
Страница 37: ...3 33 3 34 2 TU IF CIRCUIT DIAGRAM A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T...
Страница 38: ...3 35 3 36 3 A V CIRCUIT DIAGRAM A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T...
Страница 39: ...3 37 3 38 4 Hi Fi CIRCUIT DIAGRAM A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T...
Страница 40: ...3 39 3 40 5 JACK CIRCUIT DIAGRAM A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T...
Страница 41: ...6 SYSTEM CIRCUIT DIAGRAM A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T 3 41 3 42...
Страница 45: ...3 49 3 50 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD TOP SIDE...
Страница 46: ...3 51 3 52 2 MAIN P C BOARD BOTTOM SIDE...
Страница 48: ...3 55 3 56 4 KEY P C BOARD...
Страница 49: ......
Страница 60: ...3 67 2 Tray open waveform FIG 3 2 3 Tray close waveform FIG 3 3 OPEN CLOSE LM LM OPEN CLOSE LM LM...
Страница 63: ...3 70 FIG 7 2 DVD FIG 7 3 CD FACT FACT FE FE SBAD SBAD...
Страница 64: ...3 71 FIG 7 4 CD 8 FOCUS ON WAVEFORM FIG 8 1 DVD FE FOSO FACT FACT FACT FE SBAD...
Страница 65: ...3 72 FIG 8 2 CD 9 SPINDLE CONTROL WAVEFORM NO DISC CONDITION DVD FIG 9 1 FOCUS FACT SPINDLE_S SP SP FE FACT...
Страница 67: ...3 74 11 RF WAVEFORM FIG 11 1 12 ZR36882 AUDIO OPTICAL AND COAXIAL OUTPUT SPDIF FIG 12 1 RFO SPDIF...
Страница 68: ...3 75 13 ZR36882 VIDEO OUTPUT WAVEFORM 1 Full colorbar signal CVBS FIG 13 1 2 Y FIG 13 2 JK702 pin6 JK702 pin7...
Страница 69: ...3 76 14 AUDIO OUTPUT FROM AUDIO DAC 1 AUDIO L R FIG 14 1 3 C FIG 13 3 JK702 PIN8 JK702 PIN4 5 1KHz 0DB...
Страница 70: ...3 77 2 Audio Related Signal FIG 14 2 AOUT0 ABCK ALRCLK...
Страница 75: ...3 83 3 84 2 SERVO CIRCUIT DIAGRAM A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T...
Страница 76: ...3 85 3 86 3 AV JACK CIRCUIT DIAGRAM A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T...
Страница 77: ......
Страница 109: ......