Sony JMECHA Service Manual ▷ View online
— 9 —
2-5-2. Operation
1. Operation Flow Chart
Note:
The ROM in the Mode Selector II supports the J mechanism.
2. Mode Selector II Power On
Turn on the main power of the Mode Selector II as follows.
Press the SEL button.
Press the SEL button.
3. Mode Selector II Power Off
Turn off the main power of the Mode Selector II as follows.
Press the RVS and FF buttons at the same time for 2 seconds or
longer while the power is on.
Press the RVS and FF buttons at the same time for 2 seconds or
longer while the power is on.
SEL
SEL
SEL
STEP TEST
MANUAL TEST
AUTO TEST
POWER ON
MECHA SELECT
MODE SELECT
From any status
Press RVS and FF for
2 sec. simultaneously
2 sec. simultaneously
Main power is
turned off
turned off
RVS, FF
RVS, FF
RVS, FF
SEL
RVS
FF
SEL
RVS
FF
SEL
RVS
FF
SEL
RVS
FF
SEL
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4. Mecha Select
When the main power is turned on, the MECHA SELECT display
appears on the LCD screen. Select the desired mechanism name
using the RVS and FF buttons. Selection is complete when the SEL
button is pressed. (Fig. A shows the J mechanism.)
appears on the LCD screen. Select the desired mechanism name
using the RVS and FF buttons. Selection is complete when the SEL
button is pressed. (Fig. A shows the J mechanism.)
5. Test Type Select
Using the RVS and FF buttons, select a desired test type from the
three types of “MANUAL”, “STEP” and “AUTO”. Selection is
complete when the SEL button is pressed.
three types of “MANUAL”, “STEP” and “AUTO”. Selection is
complete when the SEL button is pressed.
6. Manual Test
In this test, the motor of the mechanism deck is turned on only
during the period while the RVS or FF button is pressed manually.
during the period while the RVS or FF button is pressed manually.
7. Step Test
In this test, the direction of motor movement is determined by the
RVS and FF buttons. The motor of the mechanism deck is kept
turned on until the mechanical status is changed from the present
mechanical status that is obtained from the sensor information.
RVS and FF buttons. The motor of the mechanism deck is kept
turned on until the mechanical status is changed from the present
mechanical status that is obtained from the sensor information.
8. Auto Test
In this test, the mechanism deck is tested as to whether it performs
a series of movements correctly in accordance with the operation
sequence that is memorized earlier for each type of deck, by checking
the output signals from sensors with the stored memory. Turning
on the RVS or FF button performs the same operation.
a series of movements correctly in accordance with the operation
sequence that is memorized earlier for each type of deck, by checking
the output signals from sensors with the stored memory. Turning
on the RVS or FF button performs the same operation.
MECHA SELECT
J
Pressing the RVS or FF button
changes the mechanism name.
changes the mechanism name.
Fig. a
Fig. b
TEST TYPE SELECT
MANUAL
Pressing the RVS or FF button cycles
among MANUAL, STEP, AUTO in this order.
among MANUAL, STEP, AUTO in this order.
Fig. c
Fig. d
Fig. e
J MANUAL OFF
STATUS
Present status of sensor appears. (example: EJ)
Mechanism name
Present mode
Motor ON/OFF
J STEP OFF
STATUS
Present status of sensor appears. (example: EJ)
Mechanism name
Present mode
Motor ON/OFF
J AUTO OFF
STATUS
Present status of sensor appears. (example: EJ)
Mechanism name
Present mode
Motor ON/OFF
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2-5-3. Mechanism Status (Position) Transition Table Using Mode Selector II
After selecting a mechanism deck, select either the MANUAL or
STEP test (not AUTO) using the Mode Selector II. The desired
mechanism status (position) can be specified by pressing the RVS
or FF button. (The selected status appears on STATUS.)
EJ
STEP test (not AUTO) using the Mode Selector II. The desired
mechanism status (position) can be specified by pressing the RVS
or FF button. (The selected status appears on STATUS.)
EJ
yULEySRyGLySTOPyRP
2-5-4. Battery Alarm Indication
When the level of the battery used to supply power to this system
decreases, this display appears asynchronously. When this happens,
all operations are disabled and the battery must be replaced.
decreases, this display appears asynchronously. When this happens,
all operations are disabled and the battery must be replaced.
MD name
Code
A
B
C
0
0
1
1
0
1
1
0
0
1
1
0
0
1
0
0
1
1
1
2
3
4
5
6
J Mechanism
EJ
ULE
SR
GL
STOP
RP
Fig. f
BATT DOWN
CHANGE PLEASE
CHANGE PLEASE
— 12 —
3-1. Drum
1.
Removal procedure
1)
Loosen the three screws (M1.4
×
2) 1 fixing the drum and
remove the drum.
3. Check, Adjustment and Replacement of Mechanical Parts
2.
Attachment procedure
1)
Align the two reference holes A and B on the rear of the drum
with the position setting reference pins A and B of the drum
base assy.
with the position setting reference pins A and B of the drum
base assy.
2)
Install the drum with the three screws (M1.4
×
2) 1 and tighten
the screws in order from A, then B and finally C.
Tightening torque: 0.059 ± 0.01 N•m (0.6 kg•cm)
Tightening torque: 0.059 ± 0.01 N•m (0.6 kg•cm)
3)
Clean the drum referring to section 2-1.
4)
Perform the tape path adjustment. (Refer to section 4, “Tape
Path Adjustment”.)
Path Adjustment”.)
Drum
Reference pin A
Reference pin B
1
Three screws (M1.4
×
2)
Drum base block assy
Slot (reference hole A)
Drum (rear view)
Hole (reference hole B)
B
A
C
Fig.3-1
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