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Excellent service manual includes everything is need to repair this radio-caseete, how to disassemble, wiring diagram, all , waiting time until the download was only a few hours. I'm going to buy service manuals from here, are cheap and very good.Thank you.
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Good service manual,i saved from scrapping this deck,is now fully functional.Thanks.
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Found this to be the manual included with the original packinging, was helpfull but did not give any detailed repair instructions.
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Complete service manual, was very helpful in repairing this tapedeck.Thanks.
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The service manual was a copy of the original from Wirlpool. The quality was good, all neccecary information was available including the service-codenumbers, so I could order the right part to be replaced for repair.
Downloding was no probem after the payment.
Thanks for the service!
HCD-HP7
CD SECTION
Note: 1. CD Block is basically constructed to operate without adjustment. 2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated. 3. Use an oscilloscope with more than 10 M� impedance. 4. Clean the object lens by an applicator with neutral detergent when the signal level is low than specified value with the following checks. 5. Check the focus bias check when optical block is replaced. Focus Bias Check
oscilloscope (DC range) BD board TP (RF) TP (VC)
+ �
s
Checking Location: � BD BOARD (Conductor Side) �
14
1
IC722
15 28
CN710 TP(RF)
1 80 61
60
Procedure : 1. Connect oscilloscope to TP (RF) and TP (VC) on the BD board. 2. 3. 4. Press the ?/1 button to turn the power on. Put disc (YEDS-18) in and press the N (CD) button to playback. Confirm that oscilloscope waveform is as shown in the figure below. (eye pattern) A good eye pattern means that the diamond shape ( ) in the center of the waveform can be clearly distinguished.
VOLT/DIV: 200 mV TIME/DIV: 500 ns
TP(VC)
20 21
IC721
40 41
IC803
level: 1.0 ± 0.2 Vp-p
25
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