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Applecd 150.300
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Apple Applecd 150.300 Service Manual

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AppleCD 150/300

Apple CD 150 Apple CD 300
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Specifications
Specifications Characteristics 150 - 1

Characteristics 150

Access Time (Including Latency)
Data-Streaming Rate
Block Rate
Average: 380 ms (typical) Maximum (first to last block): 650 ms (typical)
Mode 1: 150K/sec. Mode 2: 171K/sec.
75 blocks/sec.
Specifications Characteristics 150 - 2
SCSI T ransfer Rate
Rotational Speed
Interfaces
Playback Medium
Approximately 1.5 MB/sec.
Approximately 230–530 rpm
One headphone jack; two SCSI 50-pin connectors; two audio output jacks
12-cm optical disc installed in a CD caddy (any CD-ROM or audio compact disc is compatible)
Specifications Characteristics 300 - 3

Characteristics 300

Access Time (Including Latency)
Data-Streaming Rate
Block Rate
Normal speed: 360 ms (typical) Double speed: 295 ms (typical)
Normal speed: Mode 1: 150K/sec. Mode 2: 171K/sec.
Double speed: Mode 1: 300K/sec. Mode 2: 342K/sec. Normal speed: 75 blocks/sec. Double speed: 150 blocks/sec.
Specifications Characteristics 300 - 4
SCSI T ransfer Rate
Rotational Speed
Interfaces
Playback Medium
Formats
Approximately 2.5 MB/sec.
Normal speed: Approximately 230–530 rpm Double speed: Approximately 460–1,060 rpm
One headphone jack; two SCSI 50-pin connectors; two audio output jacks
12-cm optical disc installed in a CD caddy (any CD-ROM or audio
compact disc is compatible)
Multi-session Kodak Photo CD (QuickTime required); ISO 9660/
High Sierra; Macintosh HFS; CD-ROM XA (requires additional ADPCM hardware to read compressed audio); CD+G; CD+MIDI; standard audio CDs; CD digital audio data via SCSI bus
Specifications Capacity - 5

Capacity

Data Capacity
Recording Surfaces
Data/Block (Available to User)
Blocks per Disc
Mode 1: 656 MB Mode 2: 748 MB
1
Mode 1: 2,048 bytes Mode 2: 2,336 bytes
More than 270,000
Specifications Audio Playback - 6

Audio Playback

Playing Time
Frequency Response
More than 1 hr.
20–20,000 Hz
Specifications Environmental - 7

Environmental

Operating Temperature
Relative Humidity
Storage Temperature
41–104°F (5–40°C)
AppleCD 150: 10–90% noncondensing AppleCD 300: 5–90% noncondensing
–22 to 122°F (–30 to 50°C)
Specifications Electrical - 8

Electrical

Line V oltage
Frequency
Power Consumption
100–240 VAC
50–60 Hz
AppleCD 150: 0.25 A AppleCD 300: 0.28 A
Specifications Physical - 9

Physical

Dimensions
AppleCD 150
AppleCD 300
Weight
AppleCD 150: AppleCD 300:
Height: 1.95 in. (4.9 cm) Width: 7 in. (17.75 cm) Depth: 12.9 in. (32.5 cm)
Height: 1.96 in. (5.0 cm) Width: 7 in. (17.75 cm) Depth: 13.1 in. (33.4 cm)
6.5 lb. (2.9 kg)
6.29 lb. (2.85 kg)
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Troubleshooting

Troubleshooting General/ - 1

General

The Symptom Charts included in this chapter will help you diagnose specific symptoms related to your product. Because cures are listed on the charts in the order of most likely solution, try the first cure first. Verify whether or not the product continues to exhibit the symptom. If the symptom persists, try the next cure. (Note: If you have replaced a module, reinstall the original module before you proceed to the next cure.)
If you are not sure what the problem is, or if the Symptom Charts do not resolve the problem, refer to the Flowchart for the product family.
For additional assistance, contact Apple Technical Support.
Troubleshooting Symptom Charts - 2

Symptom Charts

Green power light is not on
CD-ROM drive does not accept disc
Headphone jack does not operate correctly
Volume control does not operate correctly
1 Replace power supply. 2 Replace drive mechanism.
1 Replace disc (if dirty or damaged). 2 Replace drive mechanism.
1 Replace drive mechanism. 2 Replace power supply.
Replace drive mechanism.
Troubleshooting Symptom Charts - 3
Speaker jacks do not operate
Macintosh cannot mount CD-ROM drive
1 Replace drive mechanism. 2 Replace audio-out assembly. 3 Replace power supply.
1 Replace drive mechanism. 2 Replace power supply. 3 Replace SCSI-device-to-case cable. 4 Replace SCSI select switch.
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T ak e Apart

Take Apart - 1
The CD-ROM drive is a mechanical device with moving parts. Rough handling can cause mechanical failures. Follow these guidelines when you handle or repair the CD-ROM drive:
• Switch off the power and make sure no SCSI devices are attached to the drive.
• Place the drive on a soft, grounded surface before starting repairs.
• Never transport the drive with a CD-ROM disc or caddy inside.
Take Apart - 2
• Use the original shipping containers when you transport the drive.
• Never place an AppleCD 300 drive mechanism in an AppleCD 150 case. The SCSI-device-to-case cable will not connect correctly.
Take Apart Top Case Guidelines - 3

Top Case Guidelines

Top Case
No preliminary steps are required before you begin this procedure.
1 Remove the six case
screws.
2 Lift off the top case.
Take Apart CD-ROM Drive - 4

CD-ROM Drive

Before you begin, remove the top case:
CD-ROM Drive
Caution:
precautions in Bulletins/ Safety.
Review the ESD
Take Apart CD-ROM Drive - 5
1 Remove the four drive
mounting screws from the bottom of the case.
Take Apart CD-ROM Drive - 6
SCSI Select
Switch Cable
Audio-Out
Cable
SCSI-Device-to-Case Cable
Power Cable
Ridged Edge
2 Hold the drive and turn
over the case.
3 Lift the back of the drive
and disconnect the following cables:
• Audio-out cable
• SCSI select switch cable
• SCSI-device-to-case cable
• Power cable
4 Remove the drive from
the case.
Replacement Caution:
Replace the power cable connector ridged edge up.
Take Apart CD-ROM Drive - 7
Audio-Out Cable
Jumpers
ID Select
Parity
SCSI Select Switch Cable
Replacement Note:
Route the power cable beneath the SCSI-device-to-case cable.
Replacement Note:
If you are replacing a defective drive with a new drive, remove the jumpers over the left three pairs of pins in the new drive’s SCSI select switch connector.
Replacement Note:
To reconnect the SCSI select switch cable, insert the cable connector on the left four pairs of pins in the drive connector. Make sure
Take Apart CD-ROM Drive - 8
the looped wire attached to the connector faces the audio-out cable.
Take Apart Power Supply - 9

Power Supply

Before you begin, remove the following:
• Top case
Power Supply
• CD-ROM drive
Take Apart Power Supply - 10
1 Remove the two power
supply mounting screws from the bottom of the case.
Take Apart Power Supply - 11
2 Hold the power supply
and turn over the case.
Power Cable
3 Untape the cables from
the top of the power
Ground Wire Screw
supply.
4 Remove the ground wire
screw.
5 Lift the end of the power
supply farthest from the power cable, release the locking tab, and disconnect the power cable.
6 Remove the power
supply.
Take Apart Power Supply - 12
Replacement Note:
the ground wire screw before reconnecting the power cable.
Replace
Take Apart SCSI-Device-to-Case Cable - 13
SCSI-Device-to­Case Cable
Before you begin, remove

SCSI-Device-to-Case Cable

the:
• Top case
Caution:
precautions in Bulletins/ Safety.
Review the ESD
Take Apart SCSI-Device-to-Case Cable - 14
1 Remove the four drive
mounting screws from the bottom of the case.
Take Apart SCSI-Device-to-Case Cable - 15
2 Hold the drive and turn
over the case.
3 Lift the back of the drive
and disconnect the SCSI­device-to-case cable.
4 Remove the four cable
mounting screws.
5 Pull the cable through
the rear panel and out of the case.
SCSI-Device-to-Case Cable
Take Apart Rear Panel - 16

Rear Panel

Before you begin, remove the top case.
Rear Panel
Caution:
precautions in Bulletins/ Safety.
Review the ESD
Take Apart Rear Panel - 17
1 Remove the four drive
mounting screws from the bottom of the case.
Take Apart Rear Panel - 18
2 Hold the drive and turn
SCSI Select
Switch Cable
Audio-Out
Cable
SCSI-Device-to-Case Cable
Power Cable
over the case.
3 Lift the back of the CD-
ROM drive and disconnect the following cables:
• Audio-out cable
• SCSI select switch cable
• SCSI-device-to-case cable
• Power cable
4 Remove the ground wire
screw.
Take Apart Rear Panel - 19
Rear Panel
Replacement Note:
Replace the ground wire screw before reconnecting the power cable.
5 Remove the two rear
panel mounting screws.
6 Remove the rear panel.
Take Apart Rear Panel - 20
Looped
Wire
Audio-Out Cable
SCSI Select
Switch Cable
0 1 2
ID Select
Parity
Replacement Note:
To reconnect the SCSI select switch cable, insert the cable connector on the left four pairs of pins in the drive connector. Make sure the looped wire attached to the connector faces the audio-out cable.
Take Apart Power Switch/Plug Assembly - 21

Power Switch/ Plug Assembly

Before you begin, remove the following:
• Top case
• Rear panel
Power Switch/Plug Assembly
Take Apart Power Switch/Plug Assembly - 22
1 Using a small flat-blade
screwdriver, depress the bottom latch on the power plug and push the plug through the opening as far as it will go.
2 Depress the top latch on
the power plug and push out the plug.
3 Repeat the procedure
for the power switch.
Power Plug
Power Switch
Take Apart Power Switch/Plug Assembly - 23
4 Transfer the wires of the
power switch cable across the small channel to the power plug opening.
5 Remove the power
switch/power plug assembly through the power plug opening.
Take Apart Audio-Out Assembly - 24

Audio-Out Assembly

Before you begin, remove the following:
Audio-Out Assembly
• Top case
• Rear panel
Take Apart Audio-Out Assembly - 25
1 Remove the mounting
screw.
2 Remove the audio-out
assembly from the rear
Audio-Out
Assembly
panel.
Take Apart SCSI Select Switch - 26

SCSI Select Switch

Before you begin, remove
SCSI Select Switch
the following:
• Top case
• Rear panel
• Audio-out assembly
Take Apart SCSI Select Switch - 27
Note:
Use a rocking motion to work the switch out of the opening in the rear panel.
1 Using a small flat-blade
screwdriver, depress one of the two switch latches and push the switch through the
Switch Latch
opening as far as it will go.
2 Depress the other latch
and push out the switch as far as it will go.
3 Repeat the procedure
SCSI Select Switch
until the switch works free.
Take Apart SCSI Select Switch - 28
4 Remove the switch
assembly from the rear panel.
Take Apart Front Panels - 29

Front Panels

Before you begin, remove the top case.
Front Panel
Front Panel
Caution:
precautions in Bulletins/ Safety.
Review the ESD
Take Apart Front Panels - 30
1 Remove the four drive
mounting screws from the bottom of the case.
Take Apart Front Panels - 31
2 Hold the drive and turn
over the case.
Left Front Panel
3 Lift the front of the
drive.
4 Pull the left front panel
straight up as far as it will go and remove it from the case.
5 Repeat for the right
front panel.
Right Front Panel
Take Apart Bottom Case - 32

Bottom Case

Before you begin, remove the following:
• Top case
Bottom Case
• CD-ROM drive
• Power supply
• Rear panel
To replace the bottom case, perform the steps referenced above.
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Exploded V ie w

Exploded View 1

SCSI-Device-to-Case Cable
Power Supply
Audio-Out
Assembly
SCSI Select Switch
Rear Panel
Top Case
CD-ROM Drive
Front Panels
Bottom Case
Power Switch/Plug Assembly
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Additional Procedures

Additional Procedures Fuse - 1

Fuse

Before you begin, remove the following:
• Top case
• Rear panel
Fuse
Additional Procedures Fuse - 2
Using a small flat-blade screwdriver, pry the fuse from the holder.
Replacement Note:
is not a service part. Replace the fuse with type MT4 250V2A, available at most electronic stores.
The fuse
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