— 15 —
Adjustment of VCC7, VCC3, voltage check of VCC1
• Supply voltage
CP150 = 5.0
±
0.05 [V]
CP130 = 3.3
±
0.05 [V]
CP100 = 5.0
±
0.05 [V]
(You can use an AC adaptor however, for the checking after repairs, apply above mentioned voltages.)
(1) Adjust VR131 for VCC7(CP121) to be 15.0
±
0.3 V
(2) Adjust VR130 for VEE3(CP120) to be –5.5
±
0.1 V
(3) Make sure that VCC1(CP102) is 3.2
±
0.16 V
Operation Check
• Supply voltage
CP150 = 5.0
±
0.05 [V]
CP130 = 3.3
±
0.05 [V]
CP100 = 5.0
±
0.05 [V]
(You can use an AC adaptor however, for the checking after repairs, apply above mentioned voltages.)
1. Set QV-770 to “PLAY” mode. (Computer communication does not work in “REC” mode.)
2. Connect QV-770 and PC with link cable.
3. Operate adjustment software on MS-DOS.
T773E. EXE
4. Make sure PC’s monitor indicates that loading parameter is complete.
(1) Make sure that serial communication is OK.
(2) Make sure DRAM is OK.
(3) Make sure flash memory is OK.
(4) Make sure OSD is OK.
(5) Make sure Battery Voltage warning level is OK. (value 164 to 243)
(6) Make sure color bar is outputted.
(7) Make sure backlight controller is OK.
(8) Make sure LED controller is OK.
(9) Check key input.
(10) Make sure VIDEO SW controller is OK.
(11) Make sure each button is OK.
(12) Make sure IrDA is OK.
(13) Make sure to turn power OFF.
Summary of Contents for QV-770
Page 1: ...R QV 770 APR 1998 without price KX 773...
Page 16: ...14 2 Adjustment of PCB DA Adjustment points of PCB K773 DA...
Page 28: ...26 EXPLODED VIEW 38 35 S3 S3 39 27 32 S3 38 33 38 S3 S2 37 33 34 36 S1 29 40 30 28 31...
Page 35: ...33 PRINTED CIRCUIT BOARDS D board PCB K773A DA...
Page 36: ...34 L board PCB K773A LA...
Page 37: ...35 L board PCB K773A LB CA board PCB K773A CA...
Page 38: ...36 K board PCB K773A KA PCB K773A KB...
Page 39: ...37 SCHEMATIC DIAGRAMS DA CIR K0773AAA...
Page 40: ...38 LA CIR K0773AAA...
Page 41: ...39 LB CIR ZK0773AAA...
Page 42: ...40 KX CIR ZK0773AAA...
Page 43: ...41 KA CIR K0773AAA...
Page 44: ...42 KB CIR K0773AAA...