Pioneer LD-V4300D Calibration – Overview

Calibrating the Pioneer LD-V4300D is necessary to ensure the best quality capture possible using the Domesday Duplicator as the duplication method relies on the player’s mechanical ability to track and focus on the LaserDisc being sampled.  Unfortunately calibration of a LaserDisc player is not straight-forward and requires access to a range of test equipment and a working knowledge of the construction and electronics of a LaserDisc player.

This section on calibration is a work in progress and the author does not guarantee accuracy and, as with any modification or alteration to the player you run the risk of inadvertently breaking your LD-V4300D. Please ensure that you use the correct ESD protection when performing any service work on the LD-V4300D.

Warning: When the player is in test mode there are no safe-guards to protect the player in the event of improper operation. Use the test mode with caution!

This guide is based on the service manual instructions (which can be downloaded from this site).  If in doubt, refer to the original service manual.

Note: This calibration guide is a work in progress.  More information will be added as it is written – and use with caution until complete!.

Required tools

Service remote controls

There are several options for the service remote and, in certain cases, a combination of remotes can be used.  The following sections cover the available options.

Pioneer GGF1067 Service remote

The original service remote control referred to by the service manual is the Pioneer GGF1067.  These can be obtained from sites such as Ebay, however they are very expensive (and therefore not used in this guide).

RM Series RMC12010

The RM Series RMC12010 remote is a 3rd party service remote clone.

The RMC12010 remote is shown in the following picture:

RM Series RMC12010 Remote

Please note that the RMC12010 remote does not correctly map the MULTI-REV and MULTI-FWD buttons for the LD-V4300D (and these buttons are required for the calibration process). The correct codes for these buttons are given in the Pioneer LD-V4300D Overview page. You can use either a combination of the RMC12010 and the Pioneer CU-V113A remote, or use a programmable remote and the key-codes provided on this site.

Pioneer service remote controls produced after the GGF1067 do not seem to produce the correct key-codes for MULTI-REV or MULTI-FWD either.  Again, a combination of the CU-V113A and the service remote can be used.

The mapping of the RMC12010 service remote (to the original service remote keys) is shown in the following table:

Function Operation
LD-V4300D Service Remote RMC12010 remote
Open Press the [OPEN/CLOSE] key in the stop mode. Press the [REPEAT MODE (REPEAT B)] key.
Stop Press the [OPEN/CLOSE] key in the play mode. Press the [REPEAT A] key.

Press the [REJECT] key in the play mode.

Play

Video and audio are on

Tracking is open

Press the [PLAY] key in the stop mode. Press the [TV/LDP/ key.

Press the [PLAY] key in the stop mode.

Still Press the [PLAY] key during TRACKING OPEN in the play mode. Press the [CX] key in the play mode.

Press the [PLAY] key during TRACKING OPEN in the play mode.

Tracking open Press the [STEP FWD] key in the play mode.

Press the [PLAY] key in the play mode.

Press the [STEP FWD] key in the play mode.

Press the [PLAY] key in the play mode.

[BLUE UP]
Tracking closed Press the [STEP REV] key in the play mode.

Press the [PLAY] key during TRACKING OPEN in the play mode.

Press the [STEP REV] key in the play mode.

Press the [PLAY] key during TRACKING OPEN in the play mode.

[BLUE DOWN]
Slider in Press the [SCAN REV] key. Press the [SCAN REV] key. [BLUE RIGHT]
Slider out Press the [SCAN FWD] key. Press the [SCAN FWD] key. [BLUE LEFT]
Tilt servo off Press the [SPEED DOWN] key. [SPEED-]
Tilt servo on Press the [SPEED UP] key. [SPEED+]
Tilt decrease & servo off Press the [SKIP REV] key. [CHAPTER SKIP REV]
Tilt increase & servo off Press the [SKIP FWD] key. [CHAPTER SKIP FWD]
Display on Press the [DISPLAY] key.
Display off Press the [AUDIO MONITOR] key.
Search address entry Press the [+10] key in the play mode. Press the [+10] key. The last address searched will be displayed
Search address input Input the address using [0] through [9] keys.
Search execute Press the [CHAPTER/FRAME] key.
Focus balance = 0 Press the [MULTI FWD] key during playback.
Focus balance = 1 Press the [MULTI REV] key during playback.
Plunger pull Press the [PAUSE] key. [PAUSE]
Plunger release Press the [REJECT] key. [POWER]
Return to test mode menu Press the [DISPLAY] key.
Go to diagnosis mode Press the [TEST] key. [ESC] then [TEST]
Cancel test mode Press the [ESC] key. [ESS]

Pioneer Laser disc reference disc

Servicing requires an 8″ reference disc from Pioneer. The disc referenced by the service manual is no longer available. the replacement part is the GGV1069.

GGV1069 Reference Laserdisc

The contents of the disc are as follows:

Radius
&
Time
Video Chapter- number Picture- stop Audio Extended Code
Frame-number Contents Channel 1 Channel 2 CX
0 Lead-in OFF
30sec 1 H, V Bar 1 475 1kHz (100%)
30sec 901 Multi burst 2
30sec 1801 White (100%) 3
30sec 2701 Black (7.5%) 4 Non Modulation
30sec 3601
3901
4201
Composite test Signal 5
6
7
30sec 4501
4801
5101
Stair Step 8 1kHz (100%) Non Modulation
9
10
30sec 5401
5701
6001
Color Bar 11 Non Modulation 1kHz (100%)
12
13
30sec 6301 White (100%) 14 20Hz (90.5%)
30sec 7201 Magenta 15
30sec 8101 Blue 16 1kHz (4%) ON
30sec 9001 Red 17
30sec 9901 Green 18 Non Modulation
30sec 10801 Blue 19 1kHz (75%)
30sec 11701 Red 20 CX test signal Non Modulation
30sec 12601 Green 21 Non Modulation CX test signal
30sec 13501 Composite test Signal 22 1kHz (40%) OFF
30sec 14401 Cross 23 White Noise Non Modulation
30sec 15301 Dot 24 Non Modulation White Noise
30sec 16201 Still picture 25 3.15kHz (16.2%)
30sec 17101 Video sweep 26 Non Modulation
30sec 18001 Test pattern 27
30sec 18901 Ramp 28 1kHz (100%)
30sec 19801 Composite test Signal 29 1kHz (75%)
30sec 20701 APL bounce 30 1kHz (40%)
30sec 21601 Color Bar 31 Sweep 20Hz-20kHz
30sec 22501 H, V Bar 32
60sec 23401 Motion picture

(Last Frame)

33 Sound (main) Sound (sub)
24301 34
25200
Lead-out

Calibration adaptor

Most of the calibration methods require measurement with an oscilloscope that must be connected to the service header on the FTSB module. The original service manual requires 100Kohm resistors for some tests and a simple RC filter (using a 100K resistor and 1uF capacitor). As the test header on the FTSB module is quite small, it’s a good idea to construct a simple adaptor with larger connections to assist connection to the test equipment. The following schematic shows the (very simple) circuit required for the adaptor:

LD-V4300D Calibration Adaptor

This adaptor can be constructed using a piece of strip-board. The cable is made from hook-up wire and 2x 9-pin JST EH connectors:

LD-V4300D Calibration Adaptor board

Other required equipment

You will also require:

  • Oscilloscope
  • Frequency generator
  • 2mm hex wrench
  • Multimeter
  • Small flat-bladed screwdriver (with a shaft of around 7cm)
  • Small Philips screwdriver
  • 3x 100Kohm resistor
  • 1uF capacitor

Some adjustments require the player to be placed horizontally. This means that the FTSB module’s adjustment variable resistors are not accessible (as they are under the player). For these adjustments the player will need to be placed on a frame to raise the player and allow access to the underside during operation. Ensure that the frame does not have any metallic surfaces that can come into contact with the circuit boards under the player.

Operation in test mode

Switching the player into test mode

Switch the play on using the power button whilst holding the DISPLAY key on the front-panel. The ‘display check’ screen should be shown:

Display check screen

Press DISPLAY again to enter into the diagnosis mode:

Diagnosis mode

Pressing DISPLAY again will show the test mode menu:

Test mode menu

When the player is in test mode menu the following controls to navigate:

Front panel Service remote RMC12010 remote Function
DISPLAY N/A Exit from test mode
STEP FWD STEP FWD BLUE UP Next selection item
STEP REV STEP REV BLUE DOWN Previous selection item
PLAY PLAY PLAY Execute selected item
N/A 0 – 6 0 – 6 Execute the item corresponding to the number

The available options are:

  • 0 – Exit test mode menu
  • 1 – Enter Diagnosis mode
  • 2 – Enter Service mode
  • 3 – Initialise the EEPROM (perform factory reset of all settings – requires power cycle when complete)
  • 4 – Reset the hour meter
  • 5 – Enter Aging mode

Pressing 2 on the remote shows the service mode display:

Service mode

Note: When servicing is complete you must remember to use the configuration menu to turn test mode off (otherwise the player will not operate correctly). The test mode setting is remembered by the player even if the power is cycled.

Description of test mode options

Tracking open/closed

Tracking open/closed controls if the player should ‘track’ the disc. With tracking open the player will not attempt to follow the disc’s track (and will therefore remain stationary (i.e. ‘paused) unless physically moved). With tracking closed the pick-up will track (i.e. ‘play’) the disc (if in a playback mode).

Tilt on/off

Tilt on/off controls if the player will alter the tilt mechanism according to the inclination of the disc. With tilt off the tilt mechanism remains stationary (unless modified using the tilt up/down controls on the remote). With the tilt on the player will move the tilt mechanism according to the measured disc inclination.

Status Mode

The status mode codes are as follows (and represent the status mode of the player control IC (CONT assembly IC1):

  • 0 – No operation
  • 1 – Open
  • 2 – Unload
  • 3 – Load
  • 4 – Park
  • 5 – Reject
  • 6 – Set up
  • 7 – Play

Focus Balance

The focus balance is used to set the tracking error values. When set to 1 VR6 is used to adjust the maximum tracking error value. When set to 0 VR7 is used to set the trigger level value.

Plunger pull/release

Plunger pull/release controls the pick-up locking mechanism. With the plunger released the pick-up is locked in place and cannot mechanically move (warning: Do NOT set the plunger to released unless the tracking is open). When the plunger is pulled the pick-up mechanism is released and is free to move.

Calibration procedures

The following guide shows the available calibration points on the FTSB module:

FTSB Module adjustment points

The following calibration procedure guides are available:

1. Tilt Gain Adjustment

2. Grating temporary adjustment and tracking balance adjustment

3. Pick-up height adjustment and drive shaft levelness adjustment

4. Pick-up tracking and tangential direction inclination adjustment

5. Focus error balance adjustment

6. Pick-up assembly centering check

7. Pick-up assembly centering adjustment

8. Tilt sensor inclination adjustment

9. Fine grating adjustment and tracking balance check

10. RF gain adjustment

11. Focus servo loop gain adjustment

12. Tracking servo loop gain adjustment

13. Checking the tilt operation

14. Electrical adjustments

This is currently not a complete set of possible calibration procedures. For other calibration procedures please see the service manual.