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1-4



Ò

Â

S14

(3) Remove the 3 screws 

S11

, remove the SW REG. board in

an upward direction and diagnose it.

S11

SW REG. board

(1) Remove the top cover  as described in section 1.1.3.
(2) Remove the 4 screws 

S12

 and 2 screws 

S13

.

(1) Tilt the MAIN board as described in section 1.1.7 (1), (2) and

(3).

(2) Remove the lithium battery by pushing it lightly in the direc-

tion of the arrow e.

(3) Remove the wire from the clamp 



, remove the screw 

S14

,

then remove the shielded case (P/R) 

Ò

 in an upward direc-

tion.

(4) Remove the shielded case (REG) 

Â

 in an upward direction

and diagnose the P/R board.

S13

S12

Lithium battery

1-5

The SERVICE MENU mode is used during servicing. It is configured as shown below.

Power ON

Press the [STOP], [PAUSE] and
[MENU] buttons simultaneously.

FUNCTION

HOUR METER

EMERGENCY
HISTORY

MECHA
CHECK MODE

OPERATION
CHECK MODE

SERVO
ADJUST MODE

Caution: There should be no cassette loaded in the unit.

Press the [menu] button to return to
the EMERGENCY HISTORY screen.

Used to check the history of warnings and 
emergencies related to the mechanism.
From this screen, press the [SET –] or [SET+] 
button to view the mechanism mode and sensor 
status information at the moment a warning 
condition occurred.

See sections 1.3.4 and 1.3.5.

This is the initial screen of the SERVICE MENU.
Select a menu item with the [SHIFT 

䊲

] and [SHIFT 

䊳

] buttons and go to a mode in the lower band by pressing 

the [SET -] or [SET +] button.
Pressing the [MENU] button cancels the SERVICE MENU mode.

The on-screen display is not provided when EVR ADJUST is selected. The information is displayed in the 
front panel FDP.

Used to check the ROM version from the initial screen.

Used to disable the warning detection and initialize the menu switch 
settings to the factory setting.
See section 1.3.2.

Used to check the hour meters.
See section 1.3.3.

Used for servo adjustments.
See section 3.2.

Used to diagnose the mechanism operating sensors without using a 
measuring tool.
See section 1.3.5

Used to check the operation switch modes.
Pressing one of the buttons displayed in this screen changes the displayed 
name of the pressed button to ">".

    FUNCTION
    HOUR METER
    EMERGENCY HISTORY
    MECHA CHECK MODE
    OPERATION CHECK MODE
    SERVO ADJUST
    EVR ADJUST
    ROM VER.

[SERVICE MENU]

1. WARNING ENABLE

2. MENU INITIALIZE

[FUNCTION]

ON

OFF

1. DRUM ON
2. OPERATE ON
3. CAPSTAN ON
4. TOTAL DRUM ON
5. LOADING COUNT
6. EJECT COUNT
7. BATTERY

[HOUR METER]

000000H
000000H
000000H
000000H
000000
000000
000000

1. E–04:DRUM ERROR

2. E–06:CAPSTAN ERROR

3. E–05:TU REEL ERROR

4. E–––:

[EMERGENCY HISTORY]

99–02–02  02:11

99–01–02  02:11

98–12–21  02:11

(MODE) EJECT
(ENCD) HHLL
(SAFE) ON
(BGIN) ON

(CAPN) OFF
(SPFG) L
(SP. D) 070
(REMN) 000

[MECHA CHECK MODE]

→ NOCAS
(REF.) HHLL
(CASS) OFF
(END) ON

(F/R) FWD
(TUFG)  H
(TU. D) 070

(MODE) EJECT
(ENCD) HHLL
(SAFE) ON
(BGIN) ON

(CAPN) OFF
(SPFG) L
(SP. D) 070
(REMN) 000

[MECHA CHECK MODE]

→ NOCAS
(REF.) HHLL
(CASS) OFF
(END) ON

(F/R) FWD
(TUFG)  H
(TU. D) 070

REC
REW
PLAY
TRACKING–
V. LOCK–
TIMER
LOCK
SHIFT

↓

SET+

[OPERATION CHECK MODE]

STOP
REVERSE

SEARCH
CNTRST
SHIFT

→

EJECT

REC CHK
PAUSE
FF
TRACKING+
V. LOCK+
DISPLAY
RST/CAN
SET –
OPERATE

      24H SLOW TRACKING

        3HVLK (0F)
    L12HVLK (00)
    L24HVLK (02)
      48H TL MOVE
  
      48HSKW (1D) 
    L12HSKW (70)
    L24HSKW (4C)
    SW. POINT

[SERVO ADJUST MODE]

(12)

(22)

(5A)

1-6

1. WARNING ENABLE

[ON]

Enables warning detection.

OFF

Disables warning detection.

2. MENU INITIALIZE

Initializes the service menu switch setting to the factory setting.
Pressing the [STOP] and [RESET/CANCEL] buttons simultaneously when the
cursor is located on “MENU INITIALIZE” resets the menu switch setting to
the factory setting and changes the display from OFF to ON.

1. DRUM ON

dh

Displays the drum rotation time.

2. OPERATE ON

Ph

Displays the operating time.

3. CAPSTAN ON

Ch

Displays the capstan rotation time.

4. TOTAL DRUM ON

td

Displays the total drum rotation time.

5. LOADING COUNT

Lc

Displays the number of loading operations.

6. EJECT COUNT

Ec

Displays the number of ejection operations.

7. BATTERY

bt

Allows writing of the current date data. Press the [RESET/CANCEL], [SET +] and
[SET -] buttons simultaneously while the cursor is located on “BATTERY” to write
the current date. This must be executed after the lithium battery replacement.

This screen is used to check the hour meters.

This screen is used to check the history of warning emergencies related to the mechanism. The emergency history is written in the
EEPROM (IC607 on the MAIN board) and records the history of the latest 4 emergencies.
Press the [STOP], [PAUSE] and [CNT RESET] buttons simultaneously while the emergency history is displayed to reset the history.

1. DRUM ON
2. OPERATE ON
3. CAPSTAN ON
4. TOTAL DRUM ON
5. LOADING COUNT
6. EJECT COUNT
7. BATTERY

[HOUR METER]

000000H
000000H
000000H
000000H
000000
000000
000000

1. E–07:EJECT ERROR

2. E–01:LOADING ERROR

3. E–––:

4. E–––: 

[EMERGENCY HISTORY]

98–07–24  12:40

98–07–20  08:01

Latest emergency

Error code

Year, month, day, hour and
minute of occurrence

Warning details

Last but one emergency

Last but two emergency

Last but three emergency

[ ] indicates the factory setting.

1-7

E-03

E-02

E-01

SP REEL
ERROR

UNLOADING
ERROR

LOADING
ERROR

Rotary encoder

    

↓

MAIN board
IC606  4 LS1
           5 LS2  
           6 LS3
           7 LS4

Loading does not 
complete.

Unloading does 
not complete.

Supply reel does 
not rotate.

Supply reel FG

    

↓

MAIN board
IC601 1 SUP FG

CPU checks the rotary encoder 
output to see the mechanism 
position data and identifies the 
error when loading does not 
complete in 8 seconds.

CPU checks the rotary encoder 
output to see the mechanism 
position data and identifies the 
error when unloading does not 
complete in 8 sec.

CPU identifies error when supply 
reel FG has not been detected for 
specified period of time in a mode 
in which the SP reel should rotate.

3H : Approx.   5 sec. 

L12H : Approx. 18 sec. 
L24H : Approx. 36 sec.

24H : Approx. 36 sec.
48H : Approx. 72 sec.
72H : Approx.   2 min.

120H : Approx.   3 min.
168H : Approx.   4 min.
240H : Approx.   6 min.

Power goes off 
automatically.

Power goes off 
automatically.

Power goes off 
automatically.

Loading motor failure,
MDA (IC602 on MAIN board) failure,
Power (MOTOR 12 V) defect,
Circuit protector (CP601 on MAIN board) 
disconnection,
Loading belt defect,
Mechanism part caught or stuck,
Cassette tape defect.

Capstan motor or drive circuit defect,
Belt (Capstan), clutch ass'y or idler gear 
unit defect,
Tape cut.

E-04

DRUM
ERROR

Drum motor 
does not rotate.

Drum PG/FG

    

↓

MAIN board
TP616  DPG

CPU identifies error when drum 
FG has not been detected for 
more than 3 seconds in a mode in 
which the drum motor should 
rotate.

Power goes off 
automatically.

Drum ass'y defect,
Servo circuit defect,
Power (MOTOR 12 V) defect,
Circuit protector (CP601 on MAIN board) 
disconnection.

E-06

CAPSTAN
ERROR

Capstan motor 
does not rotate.

Capstan FG

    

↓

MAIN board
TP617 CFGA

CPU identifies error when capstan 
FG has not been detected for 
more than 2 seconds when pinch 
roller is ON in a mode in which the 
capstan should rotate.

Power goes off 
automatically.

Capstan motor defect,
Servo circuit defect,
Power (MOTOR 12 V) defect,
Circuit protector (CP601 on MAIN board) 
disconnection.

E-07

EJECT
ERROR

Ejection does not 
occur.

Cassette sensor

    

↓

MAIN board
IC606 $

REC SAFETY
switch

    

↓

MAIN board
IC606 %

When ejection does not complete 
in 8 seconds.

Cassette sensor output should be 

0 V at the intake end position and 
5 V in other positions.

REC SAFETY switch should be 0 V 
during ejection and 5 V at the 
eject end position.

Cassette is 
absorbed then 
power goes off 
automatically.

Cassette housing failure,
Worm clutch ass'y defect,
Power (MOTOR 12 V) defect,
Circuit protector (CP601 on MAIN board) 
disconnection.

E-08

DEW
ERROR

Condensation of 
dew.

DEW sensor

    

↓

MAIN board
IC601 A

Dew error caused by 
condensation is identified when 
pin 86 of IC601 is higher than 4 V.

Dew error disappears when pin 86 
of IC601 is lower than 3V.

Cassette is 
ejected, drum 
starts rotation and 
cassette will not 
be accepted until 
the condensation 
disappears.

If the error display does not disappear, the 
dew sensor may be defective.

E-13

TAPE
DEFECTIVE

Tape is cut.

Begin sensor

    

↓

MAIN board
IC601 U BEGIN

End sensor

    

↓

MAIN board
IC601 I END

This error is identified when both 
the tape begin and end sensors 
detect leader (the level becomes 
Low) when a cassette is inserted.

Cassette is 
ejected then 
power goes off 
automatically.

Tape cut,
Sensor defect.

E-05

TU REEL
ERROR

Take-up reel does 
not rotate.

Take-up reel FG

    

↓

MAIN board
IC601 2 TU FG

CPU identifies error when take-up 
reel FG has not been detected for 
specified period of time in a mode 
in which the TU reel should rotate.

3H : Approx.   5 sec. 

L12H : Approx. 18 sec. 
L24H : Approx. 36 sec.

24H : Approx. 36 sec.
48H : Approx. 72 sec.
72H : Approx.   2 min.

120H : Approx.   3 min.
168H : Approx.   4 min.
240H : Approx.   6 min.

Power goes off 
automatically.

Capstan motor or drive circuit defect,
Belt (Capstan), clutch ass'y or idler gear 
unit defect,
Tape cut.

Display

Description

Sensors

Detection Method

Possible Causes

Error
Code

Operation after

Detection