Sony MHC-V73D Service Manual page 7

MHC-V73D
Protect Type Description:
X (Error Code)
2 Defect of thermistor IC or charging circuit
used by SPM (Sound Pressure Management)
system.
3 • There is possibility of over current happen at
speaker output or speaker damage (shorted).
• Unusual heat up of AMP IC by improper as-
sembly of heatsink or lack of thermal com-
pound.
• Under voltage Protection (no supply to AMP
IC when power ON).
4 DC appears in SP terminal by defect of AMP
IC.
6 • There is possibility of DC FAN is blocked or
damaged.
• Defect of DC FAN driver circuit.
SELF-DIAGNOSIS FUNCTION
When the self-diagnosis function is activated, a service number ap-
pears on the TV screen or the display.
The service number consists of an alphabet and numerals (e.g. C
13 50). See the following table for the cause and corrective action.
First 3 characters Cause and corrective action
of the service
number
C 13 This disc is dirty.
• Clean the disc with a soft cloth.
C 31 The disc is not inserted correctly.
• Turn off the system, then turn it on
again.
Then re-insert the disc correctly.
E XX To prevent a malfunction, the system has
(XX is a number) performed the self-diagnosis function.
• Contact your nearest Sony dealer or
local authorized Sony service facility
and give the 5-character service number.
Example: E 61 10
7
Description
Sony CONFIDENTIAL
For Authorized Servicer
SYS SET