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CD-C621H
DISASSEMBLY
Caution on Disassembly Follow the below-mentioned notes when disassembling the unit and reassembling it, to keep it safe and ensure excellent performance: 1. Take cassette tape and compact disc out of the unit. 2. Be sure to remove the power supply plug from the wall outlet before starting to disassemble the unit. 3. Take off nylon bands or wire holders where they need be removed when disassembling the unit. After servicing the unit, be sure to rearrange the leads where they were before disassembling. 4. Take suffcient care on static electricity of integrated circuits and other circuits when servicing. CD-C621H
STEP 1 2 3 REMOVAL Top Cabinet Side Panel (Left/right) CD Player Unit/ CD Tray Cover PROCEDURE 1. Screw ..................... (A1) x4 1. Screw ..................... (B1) x6 2. Hook ....................... (B2) x2 1. Turn on the power supply, open the disc tray, take out the CD cover, and close. (Note 1) 2. Hook ....................... (C1) x3 3. Hook ....................... (C2) x2 4. Socket .................... (C3) x2 1. Screw ..................... (D1) x5 1. Screw ..................... (E1) x3 2. Socket .................... (E2) x1 1. Screw ..................... 2. Socket .................... 3. Flat Wire ................. 4. Tip Wire .................. 5. Flat Cable .............. (F1) x4 (F2) x4 (F3) x1 (F4) x1 (F5) x1 FIGURE 7-1 7-1 7-2
CD-C621H
Top Cabinet (A1)x2 ø3x12mm
(B2)x1 (B1)x1 ø3x8mm
Side Panel (Right) (A1)x2 ø3x12mm Back Board (B2)x1 (B1)x1 ø3x8mm Side Panel (Left)
(B1)x4 ø3x8mm
Figure 7-1
4 5 6
Back Board Tuner PWB Main PWB
7-2 8-1 8-1
(C2) x1 (C3) x2 Pull
CD Tray Cover ( C1) x3 1
1
8-1
7
Front Panel
1. Screw ..................... (G1) x1 2. Socket .................... (G2) x1 3. Hook ....................... (G3) x2
CD Player Unit
2 ( C2 ) x1
8 9
Headphones PWB 1. Screw ..................... (H1) x1 2. Support Bracket ..... (H2) x1 Display PWB/ Switch PWB 1. Screw ..................... (J1) x12 2. Hook ....................... (J2) x2 3.Socket ..................... (J3) x1
8-2 8-2
Back Board
8-2
10 11 12 13 14 15
Tape Mechanism 1. Open the cassette holder. 2. Screw...................... (K1) x5 Turntable Disc Tray CD Servo PWB (Note 2) CD Changer Mechanism CD Mechanism 1. Screw ..................... (L1) x1 2. Cover ..................... (L2) x1 1. Screw ..................... (M1) x2 2. Guide ..................... (M2) x2 1. Screw ..................... (N1) x1 2. Socket .................... (N2) x4 1. Screw ..................... (P1) x4 1. Screw ..................... (Q1) x1
Main PWB
8-3 8-3 8-4 8-5 8-5
LOCK LEVER
(D1)x5 ø3x8mm
Figure 7-2
Note 1: How to open the changer manually. (Fig. 7-3) 1. Change, turn fully the lock lever in the arrow direction through the hole on the loading chassis bottom in this state. After that, push forward the CD player base. Note 2: 1. After removing the connector for the optical pickup fromthe connector wrap the conductive aluminium foil around the front end of connector so as to protect the optical pickup from electrostatic damage.
Figure 7-3 7
CD-C621H
(F2)x2 (E1)x2 ø3x10mm (F1)x1 ø3x10mm Front Panel (F5)x1 (F4)x1 (F2)x2 (F3)x1
(N1) x1 ø3 x10mm CD Servo PWB (N2) x2
(G2)x1
(G3)x1
(E2)x1
(N2) x2
(E1)x1 ø3x10mm (G3)x1 (F1)x3 ø3x10mm (G1)x1 ø3x8mm
CD Player Unit
Figure 8-4
(P1) x4 ø3 x12mm (Q1) x1 ø2.6 x10mm Shift Lever
Tuner PWB Main PWB
Figure 8-1
(J2)x2 Switch PWB (J3)x1 Front Panel
CD Changer Mechanism
(J1)x2 ø3x10mm Display PWB (J1)x7 ø3x10mm Headphones PWB Open (J1)x3 ø3x10mm (H2)x1 (H1)x1 ø3x10mm Cassette Holder Tape Mechanism (K1)x5 ø3x10mm
CD Player Base
CD Mechanism
Care when installing the CD changer mechanism. Install the CD changer mechanism on the CD player base after the shift lever has been set in the highest position. Figure 8-5
Figure 8-2
(L1) x1 ø3 x10mm (L2) x1 Washer Turntable
Disc Tray (M1) x1 ø3 x10mm
(M2) x1
CD Player Unit (M2) x1
(M1) x1 ø3 x10mm
Figure 8-3 8
CD-C621H
CP-C621H
STEP 1 REMOVAL Front Speaker PROCEDURE 1. Front Panel ............ (A1) x1 2. Tip .......................... (A2) x2 3. Screw ..................... (A3) x6 FIGURE 9-1
CP-C621H
(A3)x2 ø3x10mm Tweeter (A3)x4 ø4x12mm
(A2)x2
Note: The rear speakers can be easily disassembled. Therefore the disassembling method is not discribed. For details refer to the disassembling drawing in the Parts Guide.
Woofer
Front Panel (A1)x1 Screw Driver
Figure 9-1
REMOVING AND REINSTALLING THE MAIN PARTS
CD MECHANISM SECTION
Perform steps 1, 2, 3, 11, 12, 13, 14 and 15 of the disassembly method to remove the CD mechanism.
Loading/Up/ Down Motor Motor PWB
How to remove the loading motor (See Fig. 9-2)
1. Remove the screws (A1) x 2 pcs., to remove the loading motor.
(A1) x2 ø2.6 x5mm
How to remove the pickup (See Fig. 9-3)
1. Remove the screws (B1) x 2 pcs., to remove the shaft (B2). 2. Remove the stop washer (B3) x 1 pc., to remove the gear (B4). 3. Remove the pickup. Note After removing the connector for the optical pickup fromthe connector wrap the conductive aluminium foil around the front end of connector so as to protect the optical pickup from electrostatic damage. Figure 9-2
Stop Washer (B1) x2 (B3) x1 ø2.6 x6mm
Pickup
Shaft (B2) x1
CD Mechanism Gear (B4) x1
Figure 9-3
9