RCA RP-7902A CD Player

Latest revision as of 19:16, 17 March 2009

Figure 1: Fully assembled CD player

Description

This product is a dated 1994 RCA CD Player. It has 41 distinct parts.

How It Works

The CD Player basic operation comes from laser reading binary data encoded on a CD and feeding that information through the circuit board where it is translated to an electrical current which is fed through the jack to a person's headphone.

The CD Player functions are as follows: the "Circuit Board" receives the electricity that the batteries provide. The "Circuit Board" regulates how the electricity is used, and what parts it is supplied to at all times, so that the player functions correctly. When the "Laser Motor" is receiving power, it spins the gears that interact with the "Brass Screw", which causes the "Laser Housing" to slide back and forth along the two "Stainless Steel Rods". When the "CD Rotation Motor" is receiving power, the disc spins around it at a variable speed so that it can be read by the "Laser Eye" from the middle outward.

The components are the input control devices such as the Play, Skip, and Stop buttons; data modifiers such as volume and bass switches; power supply; circuit board and appropriate wires and ribbons; laser tracking assembly which allows movement of laser eye as CD rotates; and CD rotation motor.

Current Status

The CD player currently spins a CD and displays information on the LCD screen, but does not actually read any data from CDs. Speculate that the laser eye has been damaged and does not relay any information to the circuit board.

Parts

The following table lists the Bill of Materials for the RCA CD Player:

Table 4.1: CD Player Bill of Materials

Part #	Part Name	Serial Number	# Req'd	Mat'l	Manufacturing Process	Image
1	Battery Compartment Cover	216C8209	1	ABS Plastic	Injection Molding
2	Battery Prongs	NA	1	1040 Steel	Forming
3	Bottom Cover	103E5091 and 7902A	1	ABS Plastic	Injection Molding
4	Brass Screw	NA	1	Brass	Machining
5	Unfinished Base for Laser	NA	1	1040 Steel	Forging
6	CD Rotation Motor	4A04600 and 40524C	1	Varied: 1020 Steel, Copper, Rubber	Varied: Casting, forming, molding
7	Center Mount	ONC4586612	1	ABS Plastic	Injection Molding
8	Circuit Board	NA	1	Varied: Fiberglass, Copper, Lead, ABS Plastic	Varied: Forming, Injection Molding
9	Faceplate	NA	1	ABS Plastic	Injection Molding
10	Flip Cover	103E5092 and 7902A	1	ABS Plastic	Injection Molding
11	Hinge for Cover	NA	1	1040 Steel	Forming
12	Laser Eye	NA	1	Glass	Casting	NA
13	Laser Cradle	NA	1	1040 Steel	Forging	NA
14	Laser Housing	NA	1	1040 Steel	Forming	NA
15	Laser Seat	NA	1	ABS Plastic	Injection Molding	NA
16	Laser Track Motor	13KA12A and 06894KC	1	Varied: 1020 Steel, Copper	Varied: Casting, Forming
17	Magnet for Laser Assembly	NA	2	Iron	Forming	NA
18	Metal Sheet for Laser Assembly	NA	1	1040 Steel	Forging
19	Plastic for Laser Assembly	NA	1	ABS Plastic	Injection Molding	NA
20	Plate for Laser Casing	NA	1	1040 Steel	Forging	NA
21	Play Button	NA	1	ABS Plastic	Injection Molding	NA
22	Rubber Shock Absorber	NA	3	Rubber	Molding	NA
23	Sheet Metal	NA	1	1040 Steel	Forging	NA
24	Sheet Metal for Laser Mount	NA	1	1040 Steel	Forging	NA
25	Small Spring	NA	1	1040 Steel	Forming	NA
26	Spring	NA	1	1040 Steel	Forming	NA
27	Stainless Steel Rod	NA	2	1040 Steel	Extrusion
28	T-Shaped Piece	NA	1	ABS Plastic	Injection Molding	NA
29	Top	103E5090 and 7902A	1	ABS Plastic	Injection Molding
30	White Gear for Laser Tracking	NA	1	ABS Plastic	Injection Molding	NA
31	White Gear for Motor	NA	1	ABS Plastic	Injection Molding	NA
32	Yellow Gear for Laser Assembly	NA	1	ABS Plastic	Injection Molding	NA
33	.112-in Flat Head Screw	NA	2	1040 Steel	Machining	NA
34	.120-in Button Head Screw	NA	4	1040 Steel	Machining	NA
35	.130-in Countersunk Flat Head Screw	NA	2	1040 Steel	Machining	NA
36	.175-in Button Head Bolt	NA	1	1040 Steel	Machining	NA
37	.185-in Button Head Screw	NA	2	1040 Steel	Machining	NA
38	.260-in Button Head Screw	NA	6	1040 Steel	Machining	NA
39	.280-in Round Head Screw	NA	2	1040 Steel	Machining	NA
40	.380-in Button Head Bolt	NA	2	1040 Steel	Machining	NA
41	.425-in Pan Head Screw	NA	4	1040 Steel	Machining	NA

Files

3D Models

3D Models as Alibre AD_PRT files

3D Models in IGS format

3D Models in STL format

3D Models in STP format

2D Drawings

2D Drawings in Alibre AD_DRW format

2D Drawings in STP format

2D Drawings as TIFF Pictures

Assemblies

Base Assembly

Center Mount Assembly

Full CD Player Assemblied

Laser Assembly

Table 5.1: List of Models for Download
(Zipped ACIS, IGS, STL, STP, AD_PRT Files)

Part #	Part Name	Image	3D Models	2D Drawings
1	Battery Compartment Cover		3D Package	2D Package
2	Battery Prongs		3D Package	2D Package
3	Bottom Cover		3D Package	2D Package
4	Brass Screw		3D Package	2D Package
5	Unfinished Base for Laser		3D Package	2D Package
6	CD Rotation Motor		3D Package	2D Package
7	Center Mount		3D Package	2D Package
8	Circuit Board		3D Package	2D Package
9	Faceplate		3D Package	2D Package
10	Flip Cover		3D Package	2D Package
11	Hinge for Cover		3D Package	2D Package
12	Laser Eye	NA	3D Package	2D Package
13	Laser Cradle	NA	3D Package	2D Package
14	Laser Housing	NA	3D Package	2D Package
15	Laser Seat	NA	3D Package	2D Package
16	Laser Track Motor		3D Package	2D Package
17	Magnet for Laser Assembly	NA	3D Package	2D Package
18	Metal Sheet for Laser Assembly		3D Package	2D Package
19	Plastic for Laser Assembly	NA	3D Package	2D Package
20	Plate for Laser Casing	NA	3D Package	2D Package
21	Play Button	NA	3D Package	2D Package
22	Rubber Shock Absorber	NA	3D Package	2D Package
23	Sheet Metal	NA	3D Package	2D Package
24	Sheet Metal for Laser Mount	NA	3D Package	2D Package
25	Small Spring	NA	3D Package	2D Package
26	Spring	NA	3D Package	2D Package
27	Stainless Steel Rod		3D Package	2D Package
28	T-Shaped Piece	NA	3D Package	2D Package
29	Top		3D Package	2D Package
30	White Gear for Laser Tracking	NA	3D Package	2D Package
31	White Gear for Motor	NA	3D Package	2D Package
32	Yellow Gear for Laser Assembly	NA	3D Package	2D Package
33	.112-in Flat Head Screw	NA	3D Package	2D Package
34	.120-in Button Head Screw	NA	3D Package	2D Package
35	.130-in Countersunk Flat Head Screw	NA	3D Package	2D Package
36	.175-in Button Head Bolt	NA	3D Package	2D Package
37	.185-in Button Head Screw	NA	3D Package	2D Package
38	.260-in Button Head Screw	NA	3D Package	2D Package
39	.280-in Round Head Screw	NA	3D Package	2D Package
40	.380-in Button Head Bolt	NA	3D Package	2D Package
41	.425-in Pan Head Screw	NA	3D Package	2D Package