Read Sony PCM-D50 Service Manual online
PCM-D50
15
SECTION 3
TEST MODE
This set provides the Test Mode that can be used for the following
check modes.
1. Setting and Exiting the TEST MODE
• Types of TEST MODE and setting the TEST MODE
1
Setting the SERVICE MODE:
(1) Turn on power to the set. Turn the LIMITER switch
on while pressing [A-B] button and [DIVIDE] button
at the same time.
• Exiting the SERVICE/TEST MODE
The TEST MODE is cancelled by turning off power (remov-
ing the battery).
(See Section 5. Flow Chart of the TEST MODE.)
2. Initial State of the TEST MODE and Exiting Method
• Initial state upon entry into the TEST MODE: “OK” is sent
to the PC through RS-232C.
Example of LCD display
Version
KeyChk+Fmt
DSP Loop
Lcd Contrast
Cluster Num
3. OK or NG Judgment
OK or NG judgment in each mode is returned by a LCD dis-
play and a status via UART.
4. How the Power of Each Section is Handled in the
TEST MODE
When TEST or SERVICE MODE is entered, the system will
keep the power state in a state equivalent to the Idle state. This
is for system to check the power device of each section for its
operation. However during execution of the Sleep command,
the system will take control based on the Sleep state since the
standby current need be measured.
5. Flow Chart of the TEST MODE
6. Transitions in Each Mode
:
Version
KeyChk+Fmt
DSP Loop
Lcd Contrast
Cluster Num
RTC Int
Battery
DCIN
VBUS
Sleep
App LogOut
Log Output
Log Clear
Menu Init
Key Check
Version
:
START
After power-on,
idle or sleep state
END
Exit from TEST MODE
Power OFF
(Remove the battery)
LIMITER SW OFF
LIMITER SW ON
Press [A-B]+[DIVIDE]
at the same time
Release [A-B]+[DIVIDE]
Release [A-B]+[DIVIDE]
SERVICE MODE
established Menu Display
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