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8
Fig. D8
1.4 SERVICE POSITION
In order to facilitate diagnosis and the repair of the Mecha-
nism assembly, this unit is constructed so as to allow the
Mechanism and Main board assemblies to be removed to-
gether from the Bottom chassis assembly.
1.4.1 How to take out the Mechanism and Main board
assemblies
(1) Remove the Top cover, Bracket, Front panel assembly
and Jack board assembly. (Refer to 1.3 DISASSEMBLY/
ASSEMBLY METHOD. )
(2) Lower the cassette holder, and make the preparations re-
quired in order to remove the screws from the Mecha-
nism assembly. (Refer to the "Procedures for Lowering
the Cassette holder assembly" on pages 1-2 of 1.3 DIS-
ASSEMBLY/ASSEMBLY METHOD.)
Å
(3) Take out 2 screws
, 1 screw
shown in Fig. 1-4-1.
(4) Remove the flat wires from CN3011 and CN902 on the
Main board assembly.
D
E
B
F
F
Fig. 1-4-1
1-4
(S8)
(L8)
ı
Ç
and 1 screw
as
D
C
A
Î
(5) Take out 2 screws
and 1 screw
4-1.
Ï
(6) Take out 2 screws
as shown in Fig. 1-4-1. Then re-
move the P/S Converter board assembly. (Refer to 1.3
DISASSEMBLY/ASSEMBLY METHOD.)
˝
(7) Remove the hook
while holding the edge of the Main
board assembly, and remove the Main board and Mecha-
nism assemblies together. At this stage be careful of the
power cord and prongs of the jacks on the back side. (Re-
fer to Fig. 1-4-2.)
(8) Remove the SW/Display board assembly and REC safety
board assembly. (Refer to page 1-3 of 1.3 DISASSEM-
BLY/ASSEMBLY METHOD. Take care not to pull the flat
wires (Fig. D7) from CN7001 and CN7191.)
Fig. 1-4-2
(9) Place the SW/Display board assembly, REC safety board
assembly, Jack board assembly and P/S Converter board
assembly on the front side and left side of the Mecha-
nism and Main board assemblies which was removed at
the step (7), then connect the flat wires into CN3011,
CN901 and CN902 of the Main board assembly, CN3501
and CN3502 of the P/S Converter board assembly. (Re-
fer to Fig. 1-4-3.)
CN3502
CN3501
Jack board
Assembly
CN7192
CN6102
CN901
CN902
REC safety board
Assembly
Assembly
SW/Disply board
Fig. 1-4-3
(10) Connect the power cord to the wall socket, and lift the
cassette holder.
(Before turning on the power make sure that there is noth-
ing which may produce a short circuit, such as faulty sol-
dering.)
´
as shown in Fig. 1-
G
P/S Converter board Assembly
Main board
Assembly
To Jog
CN3012
CN3011
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