Panasonic AG-6124 Service Manual page 123

3. Serial Data/Clock Transmission Error Display
If the Serial Data/Clock is not transmitted from
IC6001 to IC7501, "E9" is displayed as shown in
Fig.Ti. This indication will be displayed either
during the Service Information Display mode or in
normal mode.
{F 1 P)
aeerees
e °
fecceek
Disptay| [error
Fig. T1 Serial Data/Clock Transmission Error
Display
4. Service Information Display
Indicates the circuit
malfunction.
Service Data
Indicate the condition
of the circuit and/or
the position of the mechanism
Fig. D1 Service Information Display
4-1, Purpose of Service Information Display In the Service Information Display, there are four
digits divided into 3 functions.
This information aids trouble shooting by The first digit indicates which other 6 service
indicating the source of the malfunction, The modes that the unit is Currently in.
service mode number & service data number are
used by the technician during repair while the MODE 1 : Check tape protection circuit
service information can be used by _ the MODE 2 : Check tape transport mechanism
consumer to diagnoso malfunctions allowing the MODE 3: Check mode switching operation
technician to provide a more accurate repair MODE 4: Check control buttons
cost estimate and reduce repair time. MODE 5 : Check capstan motor
MODE 6: Check cylinder motor
4-2. Turning on Service Information Display The second and third digits are service data which
indicate the condition of the circuit or mechanism
There are two ways to turn on the Service being checked.
Information Display.
The fourth digit is the service Information
(1) Turn the Shuttle Ring to FF then push the display. {t is to be used by the consumer to help
Eject button. The Service Information will determine the source of a malfunction. The service
be displayed for 1 minute. information display operates independently of the
(2) Connecting a jumper wire between TPSERV service modes and stores the fault indication in
and TPGND-~ will display the — service memory for as long as AC power is supplied.
information indefinitely.
~93-