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ENGLISH
1.2
Details of Display/Detection and Applications
Table 1-1 summarizes the details of display/detection of the self-diagnostic functions and their applications.
Fig. 1-2 shows the operational processes of the self-diagnostic functions.
Table 1-1 Details of Display/Detection of Self-Diagnostic Functions and their Applications
Mechanical block self-diagnostic
Occasional defect self-diagnostic
function (A mode)
function (B mode)
Details of display/
The 8mm system control uP memorizes and
Displays the data for the defect that has
detection
displays the defect data.
occurred when the B mode is set.
(If several defects have occurred,
only the last defect detected is memorized.)
Application
Used when the defective symptom is not
Used to detect the cause of the defect (in the
reproduced during servicing.
mechanical biock or electrical circuits) and to
determine the defective position of the
mechanical block.
Detected parts
Trouble sensors
Trouble sensors
« Take-up end sensor (EST)
e Take-up end sensor (EST)
e Supply end sensor (ESS)
« Supply end sensor (ESS)
« Take-up reel sensor (RST)
e Take-up reel sensor (RST)
« Supply reel sensor (RSS)
e Supply reel sensor (RSS)
Cylinder (S30)
Cylinder (S30)
Capstan motor (CFG)
Capstan motor (CFG)
Loading motor (LOD, UNL)
Mechanism mode switch
(EJT, UST, REW, LST, FWD, HEC)
Tape detection switches, etc.
« Erase prevention tab
detection switch (TAB)
« ME/MP detection switch (ME)
e Hi-8 MP detection switch (MP)
« Cassette holder switch (STG
When the rewind mode is entered, the defect
Engage the B mode after completing the A
data is erased.
mode.
If the B mode Is engaged first, the defect data
may be erased.
Cautions
[A Mode]
+ Trouble sensors
+ 8mm system control
+ EVF (LCD) Display
+ Cylinder
Defect data
uP (Data of last defect
Set to the A mode
(Defective parts
* Capstan motor
detected)
flash)
[B Mode]
Parts to be tested
«Detection»
«Display»
+ Trouble sensors
* Cylinder
EVF(LCD)/display
+ Capstan motor
(defective parts
Set to the
+ Loading motor
Defect
flash)
B mode
+ Mechanism mode switch
data
+ Tape detection switches, etc.
Fig. 1-2 Oeration Processes of Self-Diagnostic Functions
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