BE/Body Electrical System, page 108

BE-108     BODY ELECTRICAL SYSTEM — Radio, Stereo Tape Player and Antenna

(b) Sound quality bad when tape player played.
Possible causes:
• Bad tape
• Dirty head
• Incorrectly installed speaker
• Vibration noise from around speaker
• Defective speaker
• Defective tape player

TEST 1

Does sound improve with another tape? → Yes → Tape bad
↓
No
↓
Clean head. Does sound improve? (See note for cleaning procedure.) → Yes → OK
↓
No
↓
Proceed to Test 2.

TEST 2

Is speaker correctly installed (loose or too tight)? → Yes → Does vibration sound come from around speaker? → No → Temporarily install another speaker. Okay? → Yes → Replace speaker.
↓                                                              ↓                    ↓
No                                                            Yes                   No
↓                                                              ↓                    ↓
Install correctly. If speaker                                  Repair               Replace tape player.
frame bent, replace.

[DIAGRAM showing Pinch Roller, Head, and Capstan components of a tape player mechanism]

NOTE: Head cleaning procedure.
(1) Raise the cassette door with four finger. Next, using a pencil or like object, push in the guide.
(2) Using a cleaning pen or cotton applicator soaked in alcohol, clean the head surface, pinch rollers and capstans.
(3) Push in the eject button.