1-38 (No.YD068)
No 5.0V_D
Check or Replace
the D125
Check the PWR CTL
"H" signal from -com
Is the Vcc(5.3V) sup-
plied to Q165 Emittor?
Is the Q162 Base
'H'?
Check or Replace
the Q165
YES
NO
YES
YES
NO
(2) No 5.0V_D
No 5.0V_T
Check or Replace
the D125
Check the PWR CTL
"H" signal from -com
Is the Vcc(5.3V) sup-
plied to Q163 Emittor?
Is the Q162 Base
'H'?
Check or Replace
the Q163
YES
NO
YES
YES
NO
(3) No 5.0V_T
No 3.3V
Check or Replace
the D123
Check the PWR CTL
"H" signal from -com
Is there about 3.8V
at the IC131 pin1?
Is there about 3.3V~5V
at the IC131 pin4?
Check the IC131
and Replace
YES
NO
YES
YES
NO
(4) No 3.3V
No 33V
Check or Replace
the D121
Check the PWR CTL
"H" signal from -com
Is the Vcc(33V) sup-
plied to Q161 Emittor?
Is the Q162 Base
'H'?
Check or Replace
the Q161
YES
NO
YES
YES
NO
(5) No 33V
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: ......