DV-HR400S/H
DV-HR450S/H
DV-HR480S/H
HDD RECHDD REC STOPHDD PLAY/STOPHDDDVDCH(-)OPEN/CLOSEPOWKEY1 IN 87pin
TESTDVD PLAY/STOPCH(+)DVD REC STOPDVD RECKEY0 IN 88pin
LCD8003 pin 33 COM1 LCD8003 pin 34 COM2 LCD8003 pin 35 COM3
IC8001 pin 44 LCD DATA IC8001 pin 43 LCD CLK IC8001 pin 42 LCD_CS
???
???
Check or replace key switch.
Check if display tube is damaged (cracked, etc.).
5.0V4.3V3.7V3.1V2.5V1.9V1.3V0.6V
Check STANDBY_5V line.Check line between IC501 and IC8001 pin 36.Check R8037 C8016, IC8001 and peripheral circuits.Check lines between pins of IC501 and IC8001.IC501 pin 13 IC501 pin 11 IC501 pin 12 Check lines between pins of IC8001 and LCD8003 as well as IC8001.IC8001 pin 33 IC8001 pin 34 IC8001 pin 35
KEY0/KEY1INPUT
VOLTAGE
NONONONONONONO
YESYESYESYESYESYESYESYES
Check display tube and main unit.
Operation keys do not work.Is key switch connected properly?Is control voltage properly input to IC501 pin 87 and 88?Check or replace IC501 peripheral circuits.
FLOW CHART No.15LCD display does not light up.Is 5V applied to IC8001 pin 37?Is RESET signal released on IC8001 pin 36 (5V)?Is 38KHz oscillation signal output on IC8001 pin 41?Are the following signals input to each pin of IC8001?IC8001 pin 44 LCD_DATAIC8001 pin 43 LCD_CLKIC8001 pin 42 LCD_CSAre the following signals input to each pin of LCD8003?LCD8003 pin 33 COM1LCD8003 pin 34 COM2LCD8003 pin 35 COM3FLOW CHART No.16
IC7508 pins 133,134,39,40,
?
IC7508 pin 219 DV_DCK IC4007 pin 11 AMCLK0
? IC4007 pin 10 DV_ALRCK? IC4007 pin 12 DV_BCK
??
Refer to Flow chart No.12 "Sound E-E is not output".Refer to Flow chart No.2 "Drive is not working properly (communication failure with IC7508)" or Flow chart No.3 "HDD is not working properly (communication failure with IC7508)".Check IC3004 and peripheral circuits, and line between IC3004 pin 6 and IC4004 pin 50.Check IC4004 and peripheral circuits, and lines bet- ween IC4004 pins and pins of IC7508.IC4004 pins 40-47 41,42,43,and 218DV_656 [7-0]IC4004 pin 51 Check IC4008 and peripheral circuits, and lines between IC4008 pin 10 and IC4004 pins 103 and 104.Check IC4004, IC4008 and peripheral circuits, lines between pins of IC4004 and IC4007 and peripheral circuits on lines.IC4004 pin 93 IC4004 pin 101 IC4004 pin 94 Check IC4004 and peripheral circuits.Check line between IC4004 pin 96 and IC4007 pin 9, IC4007 and peripheral circuits.
NONONONONONONONO
YESYESYESYES
YESYES
IC7508 pin133,134,39,40,
?IC7508 pin219 DV_DCK
?
Picture/sound input is impossible from DV input terminal.Is 27MHz clock signal INVCK4 input from IC3004 pin 6 to IC4004 pin 50?Are video data and video clock input from IC4004 pins to pins of IC7508?IC4004 pin 40-47 41,42,43,and 218 DV_656[7-0] IC4004 pin 51Is APLL-CK input from IC4008 pin 10 to IC4004 pins 103 and 104?Is clock signal input to each pin of IC4007?IC4007 pin 10 DV_ALRCKIC4007 pin 11 AMCLK0IC4007 pin 12 DV_BCKIs DAC data PCM1 output to IC4004 pin 96?Is audio signal output to each pin of IC4007?IC4007 pin 15 DV_AUD_LIC4007 pin 16 DV_AUD_R
YES
FLOW CHART No.13Audio signal recording is impossible.Is E-E signal output?Are drive controls of IC7508 and HDD working properly?Refer to Flow chart No.4 "Recording is impossible (MPEG stream check)".FLOW CHART No.14PictureSound
24 |
ACEC
