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Manuals were delivered promptly and were correct as advertised. No issues with the download link which was provided promptly after everything was processed. Very pleasant experience
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Paid for service manual & got the download fast - worth a visit if you need a service manual
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It's the manual, I am searching for. Now I am able to repair my Braun A501.
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Great service manual. Unfortunately on page no. 41 there are some details which i can't read.
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Wonderful service... doubt that I could have made the repairs to my turntable without this service manual. Great help!
Well worth the price paid!
KAC-819
CIRCUIT DESCRIPTION
SP P-CON Switching Circuit
When the SP output from the head unit is connected to SP IN, the power can be switched ON/OFF based on the DC voltage of the SP output. However, As certain haed unit models output DC permanently or generate a click during switching OFF, it is required to provide the capability of previous P-CON switching. A circuit which can perform the switching without using a switch is described below. This circuit performs switching by inhibiting the operation of the S-P-CON circuit when a voltage is applied to the P-CON pin.
Circuit operation description
When the head unit is connected to SP-IN, the DC component in the SP output turns Q38 ON through D32 and R158. When a voltage is applied to the P-CON pin under this condition, Q45 is turned ON via R188, positive feedback is applied by combination of Q45 and Q46, Q45 and Q46 are held at ON, so the voltage at point (A) is almost 0V and the SP-P-CON circuit is not activated. This circuit holds the ON status while the DC voltage from SP is present. Therefore, in this condition, the P-CON circuit continues functioning. To cancel the functioning, the voltage at the SP-IN pin should go 0V.
R188 100K
D29
to P-CON terminal 7.5V power control
D32
from SP-P-CON
A
10u35
+
R158
3.3K
Q38
Q46
4.7K
Q45
ADJUSTMENT
No. ITEM INPUT SETTINGS OUTPUT SETTINGS TUNER (RECEIVER) SETTINGS ALIGNMENT POINTS ALIGN FOR FIG.
Connect a cassette receiver or other receiver.
IDEL CURRENT Connect a DC voltmeter to CN3 VR3 After sufficient aging adjust to 2mV
1
-
Volume : 0
-
2
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