Pll Adjustment - Sony DSR-300 Service Manual

8-3-2. PLL Adjustment

Note: Be sure to perform this adjustment when the
RP-91 board is repaired and PLL (IC773) or
EEPROM (IC770) on the RP-91 board is
replaced.
Be sure not to perform this adjustment when
replacing the RP-91 board.
1. Set the unit in the maintenance menu, and select Menu
No. 701.
(1) While pressing the SHIFT button, press the MENU
button, then release the SHIFT button, and press the
MENU button for more than one second.
The following message is displayed on the LCD screen.
(In the following description, an underlined part
indicates a portion of the display which is blinking.)
(2) Press the RESET (MENU SET) button once to blink
"oFF."
The following message is displayed on the LCD screen.
Each time the RESET (MENU SET) button is pressed,
"600" and "oFF" will blink alternately.
(3) Press the ADVANCE button once, and select "on."
The following message is displayed on the LCD screen.
Each time the ADVANCE button is pressed, "on" and
"oFF" will blink alternately.
(4) Press the RESET (MENU SET) button once.
The following message is displayed on the LCD screen.
Each time the RESET (MENU SET) button is pressed,
"600" and "on" will blink alternately.
8-6
(5) Press the ADVANCE button several times and display
Menu No. 701.
The following message is displayed on the LCD screen.
2. Press the RESET (MENU SET) button.
3. Load a blank tape, and wait for a while (8 minutes or
less).
4. Eject the blank tape.
5. Check that the following message is displayed on the
LCD screen:
If the following message is displayed on the LCD
screen, exit Menu No. 701 and perform from step 1
again.
If the following message is still shown on the LCD
screen, check the replaced IC and/or adjacent circuitry.
X X: 42→ Could not record time required for
adjustment or check
43→ Could not find starting point of recording
45→ Cannot CLOCK DELAY adjust
50→ Cannot PLL F0 (CH1) adjust
51→ Cannot PLL F0 (CH2) adjust
52→ Cannot PLL XXXXX adjust
E0→ Cannot save data
Fb→ Operation mode changed during adjustment
or check. Or could not record
Fc→ Error occurred during adjustment or check
Fd→ Menu not supported
FE→ Adjustment prohibited (Ex.: Tape is
inserted)
Note: Because the recording in the special mode is
performed during adjustments, the tape used
in this adjustment cannot be played back
properly.
6. Press the MENU button, and exit the maintenance
menu.
The state before the maintenance menu indication will
be displayed on the LCD screen.
DSR-300/P(E)/V1