Sa, Relay Pcb" And "Sa, Main Pcb - Citizen CL-S6621 Technical Manual

Disassembly, Reassembly and Lubrication

(3) "SA, Relay PCB" and "SA, Main PCB"

1. Remove the 4 screws (BH, M3x4 (NI)) and detach the "Cover Main PCB" Block.
2. Remove the 1 screw (BH, M3x4 (NI)) and detach the "Spacer PNE" from the "Cover Main
PCB" ().
3. Disconnect all cables from the "SA, Main PCB".
• J3 (with hook), J4, J5, J6, J7, J8, J9, J11, J15, J19 (with hook)
RS232C
To optional I/F PCB (Option)
4. Remove the 3 screws (PHT (#2), M3x6) and 2 screws (BH, M3x4 (NI)), and then detach the
"Plate Main PCB" Block (). (See the figure on the previous page.)
5. Cut the "Wire Tie", disconnect the "SA Power Cable" from the main body to remove it.
6. Remove the 2 screws (BH, M3x4 (NI)) and detach the "SA, Relay PCB" () from the "SA,
Main PCB". Then, remove the "Spacer (M3 H20mm)" (2 pcs.). (See the following figure.)
7. Remove the 2 "Lock Screw (Inch)" and 4 screws (BH, M3x4 (NI)), and detach the "SA, Main
PCB" () and "Sheet Insulation Main PCB".
8. Remove the 2 screws (BH, M3x4 (NI)), and detach the "Plate, I/F Cover" from the "Plate
Main PCB".
BH, M3x4 (NI)
SA, Relay PCB
Spacer
(M3 H20mm)
Sheet Insulation Main PCB
CL-S6621
To SA Ref Sen PCB
To SA, Head Up Switch
SA, Main PCB
J202
J16
USB2.0 J18
SA, Relay PCB
BH, M3x4 (NI)
To SA PNE Sensor
To SA TRA Sen PCB
J12 (J10) (J13)
J8 J9
J11
J7
J5
(J14)
J6
J17
J3
J4
J19
J201
J15
To SA, Power Supply
To SA, Opepane PCB
SA, Main PCB
Plate Main PCB
3-28
To SA Motor PF
(for thermistor)
To SA Motor PF
To SA, Head
(for signals)
To SA, Head
(for power)
To SA, Ribbon PCB
BH, M3x4 (NI)
Plate, I/F Cover
Lock Screw (Inch)