1-44 (No.YD068)
(2) When the Y(Luminance) signal doesn't appear on the screen in PB Mode,
Is 5.0VT, 5.3VA applied to the
IC301 Pins24, 42, 55, 72, 91?
Check the line of the 5.0VT,
5.3VA Line. (Power Circuit)
Is the V.H.S/W signal
applied to the IC301 Pin70?
Is V.H.S/W "H" about 3.4V
at the IC301 Pin70?
Clean the Drum.
Replace the IC301.
Replace the IC301.
Check the System Circuit.
(IC501 Pin23)
Check the V.H.S/W level.
(Check R303, R304)
Is the I2C Bus siganl applied
to the IC301 Pins68, 69 ?
Is the I2C Bus siganl applied
to the IC301 Pins68, 69 ?
Does the Y(Luminance) RF
signal appear at the IC301
Pin79?
Check the path of the
Y(Luminance) RF signal.
(Check the C312)
Is the Y(Luminance) Video
waveform showed up at
theIC301 Pin43?
Check the path of the
Y(Luminance) RF signal.
(Check C327)
Refer to 'SYSTEM I
2
C BUS
CHECK Trouble Shooting'.
YES
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
Summary of Contents for HR-XV28SEF
Page 9: ... No YD068 1 9 SECTION 3 DISASSEMBLY This service manual does not describe DISASSEMBLY ...
Page 69: ... No YD068 1 69 F FE RFL FIG 7 2 DVD F FE RFL FIG 7 3 CD ...
Page 70: ...1 70 No YD068 5 4 8 FOCUS ON WAVEFORM F FE RFL FIG 7 4 CD FOCUS_S FACT FACT FIG 8 1 DVD ...
Page 75: ... No YD068 1 75 5 4 14 AUDIO OUTPUT FROM AUDIO DAC FIG 14 1 ...
Page 78: ......
Page 86: ...A 1 2 3 4 5 B C D E F G SCART JACK CIRCUIT DIAGRAM SHEET 6 2 15 2 16 ...
Page 87: ...A 1 2 3 4 5 B C D E F G ع DVD SERVO CIRCUIT DIAGRAM SHEET 7 2 17 2 18 ...
Page 88: ...A 1 2 3 4 5 B C D E F G ع DVD AV JACK CIRCUIT DIAGRAM SHEET 8 2 19 2 20 ...
Page 89: ...A 1 2 3 4 5 B C D E F G ع DVD SYSTEM CIRCUIT DIAGRAM SHEET 9 2 21 2 22 ...
Page 90: ...PRINTED CIRCUIT DIAGRAMS VCR MAIN BOARD TOP SIDE 2 23 2 24 ...
Page 91: ...VCR MAIN BOARD BOTTOM SIDE 2 25 2 26 ...
Page 92: ...COMPONENT PARTS LOCATION GUIDE VCR MAIN 2 27 2 28 ...
Page 93: ...LOCATION GUIDE LOCATION GUIDE POWER BOARD KEY BOARD 2 29 2 30 ...
Page 101: ...IC7V1_SDA5650X IC802_NM1232 IC903_BH78968FS IC803_LD1117A IC801_ DA9605H IC BLOCK 2 45 2 46 ...
Page 107: ......