Hitachi VTFX940EUKN, Руководство по обслуживанию

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Stopping of head drum motor
This is monitored with the PG/FG signal. The signal is discharged
from the e.m.f. of the non-conducting spools of the head cylinder
motor, showing the position of the head cylinder.
Capstan motor fault
This is monitored with the FGD signal.
If one of the above sensor signals is not available, the recorder tries
to put the lift into the “EJECT” position.
Explanation of deck error codes and deck error status
The last error code is stored and remains in the EEPROM, even if the
recorder is disconnected from the mains.
The error code can be erased by pushing the CLEAR button on the
remote control.
The display shows, for instance:
The left digit shows the error:
(e.g.: Error 2 = Capstan error)
Error table:
The 3 digits on the right represent the deck error condition:
(e.g.: 053 = during Play )
The error code can be reset in this step with the CLEAR key.
Step 01: Checking the drive positions
By pressing the SELECT key whilst Step 01 is flashing, the drive
position appears on the display.
The FTA signal from the photoelectric barriers which controls the
revolutions of the loading motor is used to check the drive condition.
The drive position is shown as a 3-digit decimal number by counting
the FTA pulses on the display.
(e.g. 213 = Play)
Table of drive positions:
Function of the Init switch:
The diagram shows the function of the Init switch, depending on the
position of the deck. The number of FTA pulses is important for the
position of the drive.
Step 02: Display of the deck error codes
By pressing the SELECT key whilst Step 02 is flashing, the deck
error code is shown on the display.
Checking the drive function
Loading and unloading time
The signal (FTA) of the photoelectric barrier which controls the
revolutions of the loading motor is used as a reference for the loading
and unloading time.
Stopping of supply or take-up reels
The tacho signals of the left (WTL) and right (WTR) winding disks are
used as control reference.
GB
Status Position
(FTA dec)
Eject 007 +2/-2
Index 191 +0/-2
Stop 200 +4/-4
Play 213 +4/-4
Reverse 237 +2/-0
A
B
A: DC, 2 V/Div, 0.5 s/Div
B: DC, 2 V/Div, 0.5 s/Div
Eject
Cass down
I n d e x /
w i n d - r e w i n d
Play
Reverse
Init switch
FTA pulses
0
no error
1
threading error
2 no capstan pulses
3
tape broken
4
no pulses left reel
5
no pulses right reel
6
head motor error
Functiontable:
012 Standby
114 VISS write 211 Slowmotion 1/24
014 Autotracking 115 Viss erase 212 " " 1/14
031 Play-3 125 Tuner - Stopout 215 " " 1/7
034 Slow_reverse 126 Auto Remain Funct. 216 " " 1/2
041 Still Picture 130 ATTS Function 217 " " -1/24
042 Fast 168 Frame+ 218 " " -1/14
044 Play-9 169 Frame- 219 " " -1/7
045 Eject 170 Play-11 220 " " -1/2
046 Play9 171 Play-7 222 Edit Record
047 Play-1 172 Play-5 223 Align of Gap
048 Pause 173 Play5 238 Pause
050 Rewind 174 Play7 239 SPC align
052 Wind 175 Play11 246 Edit Pause
053 Play 196 Tuner - Eject 247 Slow motion 1/10
054 Stop out 197 Standby Eject 248 " " 1/18
055 Record 199 Audio Dubbing 249 " " -1/10
112 Index next 202 Audio Dubb. Pause 250 " " -1/18
113 Index previous 206 Reset Tapecounter 253 Key Released