Olympia Carrera De Luxe MD, Руководство по обслуживанию

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Control PCB:
1) Following steps 1 and 3 above, remove the housing and the keyboard assembly. (Refer to the
previous page.)
2)
Disconnect the eight connectors for the power supply (CN201), selection motor (CN202), ribbon
motor (CN203), carrier motor (CN204), LF motor (CN205), hammer solenoid (CN206), left end
switch (CN207), and the LCD cable (CN210) from the control PCB (4).
Lift (release) the connector housing (4-A) for the connector (CN210) before disconnecting the
LCD cable (21). To disconnect the connector on the LCD, simply pull out the cable.
Note for only Original version (Control PCB:Artwork No. 999-32300):
When removing the LCD cable (21), be careful not to lose the ferrite core (22).
The ferrite core disappeared from the LCD cable by having changed into double-sides PCB
(2nd version control PCB:Artwork No. 999-35810.)
3)
Remove the three screws (20) holding the control PCB to the bottom cabinet (5), free the
hooks (5-C), and remove the control PCB (4).
Change for control PCB
The Control PCB had to be redesigned because of the major two devices, i.e. CPU, Toshiba
made TMP90C141N and Gate Array, NEC made uPD65006CW-A22 on which the production
has been discontinued.
The new CPU is replaced with NEC made uPD78F1174 or uPD78F1178, and the relative
programming was totally changed. (All the programming is written in the FROM of the CPU,
and the current ROM programmed each keyboard is no longer available)
Also, The control PCB is changed from single-sided one to double-sided one, and the new one
is smaller size than the current one, i.e. 88mm (3.5 inches) smaller width.
According to the changed size of the control PCB, the boss is added to mount the PCB on to
the bottom cabinet and the heat sink (cooling plate) may be reformed, and the cable of the
power switch has to be extended as well.
It is not possible to fix the new control PCB on to the old bottom cabinet and the initial power
supply unit. (And the lead wires for initial power switch is short in order to connect a
connector.)
The shield plate disappeared from the bottom cabinet by having changed into double-sides
PCB. In addition, FG wires was eliminated by the frame, too.
Control PCB (Artwork No.) Bottom cabinet &
Power supply unit Single-sided PCB(999-32300) Double-sided PCB(999-35810)
Initial unit (Up to July 2008) O X
New unit (From Aug. 2008) O O
O: Possible to mount
､
X: Not possible to
This manual describes the Toshiba CPU (TMP90C141N) at original version, and the NEC
CPU (UPD78F1174/1178) describes it at 2nd version.
Major specification Original version 2nd version
Control PCB Artwork No. 999-32300 999-35810
CPU (IC201) Toshiba TMP90C141N NEC UPD78F1174/1178
Control PCB size (W × D) 11 × 4.34" (277 × 110mm) 7.49 × 4.34" (190 × 110mm)
Effective production Up to Aug. 2008 From Aug. 2008
Note:
The screw position of 2nd version PCB changes to the right bottom from the right upper for
original version PCB.
5-5