3-7
2. SYSTEM/KEY CIRCUIT
(1) AUTO STOP
(2) The unstable loading of a Cassette tape
Auto Stop
Does the SW30 waveform
appear at the IC501
Pin18?
Do the T-UP Reel Pulses
appear at the IC501 Pin80?
Is 12V applied to the
PMC01 Pin8?
Check the Drum Motor
signal.
Does 5V appear at the
RS501?
Check the Q160 Power
Circuit.
Refer to “SMPS DRUM
12 Volt Trouble Shooting”.
Is 5V applied to the
R531 ?
Refer to SMPS 5.3VA
troubleshooting.
Check the IC501
Pins22, 23, 24, 25.
Do T/UP Reel Pulses
appear at the point
between R556 and R536?
Replace the T/UP Reel
Sensor (RS501).
Check the CST SW and
the peripheral circuitry.
Replace the IC501.
The unstable loading of a
Cassette tape
Does the “H” signal appear
at the IC501 Pin60 during
inserting the CST ?
Does the “L” signal appear
at the IC501 Pin19 during
inserting the CST?
Check the Deck
Mechanism.
Caution :
Auto stop can occur because Grease or Oil is dried up
YES
YES
YES
NO
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
Summary of Contents for ABV341 Series
Page 2: ......
Page 36: ...3 34 3 35 2 TU IF CIRCUIT DIAGRAM PB REC...
Page 39: ...3 40 3 41 5 JACK CIRCUIT DIAGRAM...
Page 41: ...3 44 3 45 7 TIMER CIRCUIT DIAGRAM XBV343...
Page 42: ...3 46 3 47 8 TIMER CIRCUIT DIAGRAM XBV342...
Page 45: ...3 52 3 53 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD LOCATION GUIDE...
Page 65: ...02 12 04 R17149A ZENITH DAP202K 3 80 3 81 6 JACK CIRCUIT DIAGRAM...
Page 70: ...LOCATION GUIDE 3 90 3 91 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD TOP VIEW...
Page 71: ...LOCATION GUIDE 3 92 3 93 2 MAIN P C BOARD BOTTOM VIEW...
Page 99: ...3 123 3 124 3 AUDIO CIRCUIT DIAGRAM COMBI SCART MTK 03 3 25 SR17447A...
Page 100: ...3 125 3 126 4 AV JACK CIRCUIT DIAGRAM COMBI SCART MTK 03 3 25 SR17446A...
Page 103: ...3 131 3 132 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD LOCATION GUIDE...
Page 134: ...4 22 GEAR F R GEAR AY P2 P3 F R Lever Tension Base Boss CAM...
